diff --git a/drivers/gpu/nvgpu/common/pmu/allocator.c b/drivers/gpu/nvgpu/common/pmu/allocator.c
index ff9566ff3..920918cb6 100644
--- a/drivers/gpu/nvgpu/common/pmu/allocator.c
+++ b/drivers/gpu/nvgpu/common/pmu/allocator.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2021, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -70,6 +70,7 @@ void nvgpu_pmu_allocator_surface_free(struct gk20a *g, struct nvgpu_mem *mem)
 void nvgpu_pmu_allocator_surface_describe(struct gk20a *g, struct nvgpu_mem *mem,
 		struct flcn_mem_desc_v0 *fb)
 {
+	(void)g;
 	fb->address.lo = u64_lo32(mem->gpu_va);
 	fb->address.hi = u64_hi32(mem->gpu_va);
 	fb->params = ((u32)mem->size & 0xFFFFFFU);
diff --git a/drivers/gpu/nvgpu/common/pmu/boardobj/boardobjgrp.c b/drivers/gpu/nvgpu/common/pmu/boardobj/boardobjgrp.c
index 9fd51dd16..286ced387 100644
--- a/drivers/gpu/nvgpu/common/pmu/boardobj/boardobjgrp.c
+++ b/drivers/gpu/nvgpu/common/pmu/boardobj/boardobjgrp.c
@@ -22,6 +22,7 @@
 
 #include <nvgpu/gk20a.h>
 #include <nvgpu/boardobjgrp.h>
+#include <nvgpu/string.h>
 #include <nvgpu/pmu/cmd.h>
 #include <nvgpu/pmu/super_surface.h>
 #include <nvgpu/pmu/allocator.h>
@@ -31,6 +32,8 @@
 static int check_boardobjgrp_param(struct gk20a *g,
 		struct boardobjgrp *pboardobjgrp)
 {
+	(void)g;
+
 	if (pboardobjgrp == NULL) {
 		return -EINVAL;
 	}
@@ -137,7 +140,7 @@ static struct pmu_board_obj *obj_get_next_final(
 
 	/* Search from next element unless first object was requested */
 	index = (*currentindex != CTRL_BOARDOBJ_IDX_INVALID) ?
-		(*currentindex + 1U) : 0U;
+		(u8)(*currentindex + 1U) : 0U;
 
 	/* For the cases below in which we have to return NULL */
 	*currentindex = CTRL_BOARDOBJ_IDX_INVALID;
@@ -177,6 +180,9 @@ static int pmu_data_inst_get_stub(struct gk20a *g,
 	struct nv_pmu_boardobjgrp *boardobjgrppmu,
 	struct nv_pmu_boardobj **pmu_obj, u8 idx)
 {
+	(void)boardobjgrppmu;
+	(void)pmu_obj;
+	(void)idx;
 	nvgpu_log_info(g, " ");
 	return -EINVAL;
 }
@@ -186,6 +192,9 @@ static int pmu_status_inst_get_stub(struct gk20a *g,
 	void *pboardobjgrppmu,
 	struct nv_pmu_boardobj_query **obj_pmu_status, u8 idx)
 {
+	(void)pboardobjgrppmu;
+	(void)obj_pmu_status;
+	(void)idx;
 	nvgpu_log_info(g, " ");
 	return -EINVAL;
 }
@@ -302,6 +311,9 @@ static int is_pmu_cmd_id_valid(struct gk20a *g,
 {
 	int err = 0;
 
+	(void)g;
+	(void)cmd;
+
 	if (pboardobjgrp->pmu.rpc_func_id ==
 		BOARDOBJGRP_GRP_RPC_FUNC_ID_INVALID) {
 		err = -EINVAL;
@@ -608,6 +620,9 @@ int nvgpu_boardobjgrp_pmucmd_construct_impl(struct gk20a *g, struct boardobjgrp
 	*pboardobjgrp, struct boardobjgrp_pmu_cmd *cmd, u8 id, u8 msgid,
 	u16 hdrsize, u16 entrysize, u32 fbsize, u32 ss_offset, u8 rpc_func_id)
 {
+	(void)id;
+	(void)msgid;
+
 	nvgpu_log_fn(g, " ");
 
 	/* Copy the parameters into the CMD*/
@@ -624,6 +639,8 @@ int nvgpu_boardobjgrp_pmu_hdr_data_init_super(struct gk20a *g, struct boardobjgr
 	*pboardobjgrp, struct nv_pmu_boardobjgrp_super *pboardobjgrppmu,
 	struct boardobjgrpmask *mask)
 {
+	(void)mask;
+
 	nvgpu_log_info(g, " ");
 
 	if (pboardobjgrp == NULL) {
diff --git a/drivers/gpu/nvgpu/common/pmu/boardobj/boardobjgrpmask.c b/drivers/gpu/nvgpu/common/pmu/boardobj/boardobjgrpmask.c
index 06d648913..19328d4ab 100644
--- a/drivers/gpu/nvgpu/common/pmu/boardobj/boardobjgrpmask.c
+++ b/drivers/gpu/nvgpu/common/pmu/boardobj/boardobjgrpmask.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -80,7 +80,7 @@ int nvgpu_boardobjgrpmask_init(struct boardobjgrpmask *mask, u8 bitsize,
 	}
 
 	mask->bitcount = bitsize;
-	mask->maskdatacount = CTRL_BOARDOBJGRP_MASK_DATA_SIZE(bitsize);
+	mask->maskdatacount = (u8)CTRL_BOARDOBJGRP_MASK_DATA_SIZE(bitsize);
 	mask->lastmaskfilter = U32(bitsize) %
 		CTRL_BOARDOBJGRP_MASK_MASK_ELEMENT_BIT_SIZE;
 
@@ -145,7 +145,7 @@ u8 nvgpu_boardobjgrpmask_bit_set_count(struct boardobjgrpmask *mask)
 		u32 m = mask->data[index];
 
 		NUMSETBITS_32(m);
-		result += (u8)m;
+		result = (u8)(result + m);
 	}
 
 	return result;
@@ -165,8 +165,8 @@ u8 nvgpu_boardobjgrpmask_bit_idx_highest(struct boardobjgrpmask *mask)
 
 		if (m != 0U) {
 			HIGHESTBITIDX_32(m);
-			result = (u8)m + index *
-			CTRL_BOARDOBJGRP_MASK_MASK_ELEMENT_BIT_SIZE;
+			result = (u8)(m + index *
+				CTRL_BOARDOBJGRP_MASK_MASK_ELEMENT_BIT_SIZE);
 			break;
 		}
 	}
diff --git a/drivers/gpu/nvgpu/common/pmu/clk/clk.c b/drivers/gpu/nvgpu/common/pmu/clk/clk.c
index 05a76db42..d6ab750d1 100644
--- a/drivers/gpu/nvgpu/common/pmu/clk/clk.c
+++ b/drivers/gpu/nvgpu/common/pmu/clk/clk.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2018-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -64,6 +64,8 @@ u32 nvgpu_pmu_clk_mon_init_domains(struct gk20a *g)
 {
 	u32 domain_mask;
 
+	(void)g;
+
 	domain_mask = (CTRL_CLK_DOMAIN_MCLK |
 			CTRL_CLK_DOMAIN_XBARCLK 	|
 			CTRL_CLK_DOMAIN_SYSCLK		|
diff --git a/drivers/gpu/nvgpu/common/pmu/clk/clk_domain.c b/drivers/gpu/nvgpu/common/pmu/clk/clk_domain.c
index be8165b8b..c0ad47d9c 100644
--- a/drivers/gpu/nvgpu/common/pmu/clk/clk_domain.c
+++ b/drivers/gpu/nvgpu/common/pmu/clk/clk_domain.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -606,7 +606,7 @@ static int devinit_get_clocks_table_35(struct gk20a *g,
 		}
 		status = boardobjgrp_objinsert(&pclkdomainobjs->super.super,
 				(struct pmu_board_obj *)(void *)
-				pclkdomain_dev, index);
+				pclkdomain_dev, (u8)index);
 		if (status != 0) {
 			nvgpu_err(g,
 			"unable to insert clock domain boardobj for %d", index);
@@ -1233,6 +1233,8 @@ static int clkdomainclkproglink_fixed(struct gk20a *g,
 				      struct nvgpu_clk_pmupstate *pclk,
 				      struct nvgpu_clk_domain *pdomain)
 {
+	(void)pclk;
+	(void)pdomain;
 	nvgpu_log_info(g, " ");
 	return 0;
 }
@@ -1650,7 +1652,7 @@ int nvgpu_pmu_clk_domain_get_from_index(struct gk20a *g, u32 *domain, u32 index)
 	struct nvgpu_clk_domain *clk_domain;
 
 	clk_domain = (struct nvgpu_clk_domain *) BOARDOBJGRP_OBJ_GET_BY_IDX(
-		&g->pmu->clk_pmu->clk_domainobjs->super.super, index);
+		&g->pmu->clk_pmu->clk_domainobjs->super.super, (u8)index);
 	if (clk_domain == NULL) {
 		return -EINVAL;
 	}
@@ -1730,6 +1732,9 @@ int nvgpu_pmu_clk_domain_freq_to_volt(struct gk20a *g, u8 clkdomain_idx,
 	struct clk_vf_point *pclk_vf_point;
 	u8 index;
 
+	(void)clkdomain_idx;
+	(void)railidx;
+
 	nvgpu_log_info(g, " ");
 	pclk_vf_points = g->pmu->clk_pmu->clk_vf_pointobjs;
 	pboardobjgrp = &pclk_vf_points->super.super;
diff --git a/drivers/gpu/nvgpu/common/pmu/clk/clk_fll.c b/drivers/gpu/nvgpu/common/pmu/clk/clk_fll.c
index af06e5eff..1d3f0d289 100644
--- a/drivers/gpu/nvgpu/common/pmu/clk/clk_fll.c
+++ b/drivers/gpu/nvgpu/common/pmu/clk/clk_fll.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -125,6 +125,8 @@ static int _clk_fll_devgrp_pmustatus_instget(struct gk20a *g,
 		(struct nv_pmu_clk_clk_fll_device_boardobj_grp_get_status *)
 		pboardobjgrppmu;
 
+	(void)g;
+
 	/*check whether pmuboardobjgrp has a valid boardobj in index*/
 	if (((u32)BIT(idx) &
 		pgrp_get_status->hdr.data.super.obj_mask.super.data[0]) == 0U) {
@@ -400,7 +402,7 @@ static int devinit_get_fll_device_table(struct gk20a *g,
 		pfll_dev = construct_fll_device(g, (void *)&fll_dev_data);
 
 		status = boardobjgrp_objinsert(&pfllobjs->super.super,
-				(struct pmu_board_obj *)pfll_dev, index);
+				(struct pmu_board_obj *)pfll_dev, (u8)index);
 		fll_tbl_entry_ptr += fll_desc_table_header.entry_size;
 	}
 
@@ -430,6 +432,9 @@ static int lutbroadcastslaveregister(struct gk20a *g,
 		struct clk_avfs_fll_objs *pfllobjs, struct fll_device *pfll,
 		struct fll_device *pfll_slave)
 {
+	(void)g;
+	(void)pfllobjs;
+
 	if (pfll->clk_domain != pfll_slave->clk_domain) {
 		return -EINVAL;
 	}
diff --git a/drivers/gpu/nvgpu/common/pmu/clk/clk_prog.c b/drivers/gpu/nvgpu/common/pmu/clk/clk_prog.c
index 0457894ba..155c095d3 100644
--- a/drivers/gpu/nvgpu/common/pmu/clk/clk_prog.c
+++ b/drivers/gpu/nvgpu/common/pmu/clk/clk_prog.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -437,7 +437,7 @@ static int devinit_get_clk_prog_table_35(struct gk20a *g,
 		}
 
 		status = boardobjgrp_objinsert(&pclkprogobjs->super.super,
-			(struct pmu_board_obj *)(void *)pprog, i);
+			(struct pmu_board_obj *)(void *)pprog, (u8)i);
 		if (status != 0) {
 			nvgpu_err(g, "error adding clk_prog boardobj %d", i);
 			status = -EINVAL;
@@ -646,6 +646,8 @@ static int _clk_prog_1x_master_rail_construct_vf_point(struct gk20a *g,
 	struct clk_vf_point *p_vf_point;
 	int status;
 
+	(void)p1xmaster;
+
 	nvgpu_log_info(g, " ");
 
 	p_vf_point = nvgpu_construct_clk_vf_point(g, (void *)p_vf_point_tmp);
@@ -1010,6 +1012,8 @@ static int vfflatten_prog_1x_master(struct gk20a *g,
 	u8 vf_point_idx;
 	u8 vf_rail_idx;
 
+	(void)clk_domain_idx;
+
 	nvgpu_log_info(g, " ");
 	(void) memset(&vf_point_data, 0x0, sizeof(vf_point_data));
 
@@ -1041,7 +1045,7 @@ static int vfflatten_prog_1x_master(struct gk20a *g,
 			freq_step_size_mhz = source_pll->freq_step_size_mhz;
 			step_count = (freq_step_size_mhz == 0U) ? 0U :
 					(u8)(p1xmaster->super.freq_max_mhz -
-						*pfreqmaxlastmhz - 1U) /
+						*pfreqmaxlastmhz - 1) /
 					freq_step_size_mhz;
 			/* Intentional fall-through.*/
 
@@ -1050,9 +1054,9 @@ static int vfflatten_prog_1x_master(struct gk20a *g,
 					CTRL_CLK_CLK_VF_POINT_TYPE_35_FREQ;
 			 do {
 				 vf_point_data.vf_point.pair.freq_mhz =
-					p1xmaster->super.freq_max_mhz -
+					(u16)(p1xmaster->super.freq_max_mhz -
 					  U16(step_count) *
-					  U16(freq_step_size_mhz);
+					  U16(freq_step_size_mhz));
 
 				status = _clk_prog_1x_master_rail_construct_vf_point(g, pclk,
 					p1xmaster, p_vf_rail,
@@ -1162,7 +1166,7 @@ static int vflookup_prog_1x_master(struct gk20a *g,
 			if (i == slaveentrycount) {
 				return -EINVAL;
 			}
-			clkmhz = (clkmhz * 100U)/pslaveents->ratio;
+			clkmhz = (u16)((clkmhz * 100U)/pslaveents->ratio);
 		} else {
 			/* only support ratio for now */
 			return -EINVAL;
@@ -1239,7 +1243,7 @@ static int vflookup_prog_1x_master(struct gk20a *g,
 			if (i == slaveentrycount) {
 				return -EINVAL;
 			}
-			clkmhz = (clkmhz * pslaveents->ratio)/100U;
+			clkmhz = (u16)((clkmhz * pslaveents->ratio)/100);
 		} else {
 			/* only support ratio for now */
 			return -EINVAL;
@@ -1266,6 +1270,8 @@ static int getfpoints_prog_1x_master(struct gk20a *g,
 	u8 j;
 	u32 fpointscount = 0;
 
+	(void)g;
+
 	if (pfpointscount == NULL) {
 		return -EINVAL;
 	}
@@ -1352,7 +1358,7 @@ static int getslaveclk_prog_1x_master(struct gk20a *g,
 			if (i == slaveentrycount) {
 				return -EINVAL;
 			}
-			*pclkmhz = (masterclkmhz * pslaveents->ratio)/100U;
+			*pclkmhz = (u16)((masterclkmhz * pslaveents->ratio)/100);
 		} else {
 			/* only support ratio for now */
 			return -EINVAL;
@@ -1374,9 +1380,9 @@ static int getslaveclk_prog_1x_master(struct gk20a *g,
 			if (i == slaveentrycount) {
 				return -EINVAL;
 			}
-			*pclkmhz = (masterclkmhz * pslaveents->ratio)/100U;
+			*pclkmhz = (u16)((masterclkmhz * pslaveents->ratio)/100);
 			/* Floor/Quantize all the slave clocks to the multiple of step size*/
-			*pclkmhz = (*pclkmhz / FREQ_STEP_SIZE_MHZ) * FREQ_STEP_SIZE_MHZ;
+			*pclkmhz = (u16)((*pclkmhz / FREQ_STEP_SIZE_MHZ) * FREQ_STEP_SIZE_MHZ);
 			*ratio = pslaveents->ratio;
 		} else {
 			/* only support ratio for now */
diff --git a/drivers/gpu/nvgpu/common/pmu/clk/clk_vf_point.c b/drivers/gpu/nvgpu/common/pmu/clk/clk_vf_point.c
index 9e329e67f..ac04d965c 100644
--- a/drivers/gpu/nvgpu/common/pmu/clk/clk_vf_point.c
+++ b/drivers/gpu/nvgpu/common/pmu/clk/clk_vf_point.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -112,6 +112,8 @@ static int _clk_vf_points_pmustatus_instget(struct gk20a *g,
 		(struct nv_pmu_clk_clk_vf_point_boardobj_grp_get_status *)
 		pboardobjgrppmu;
 
+	(void)g;
+
 	/*check whether pmuboardobjgrp has a valid boardobj in index*/
 	if (idx >= CTRL_BOARDOBJGRP_E255_MAX_OBJECTS) {
 		return -EINVAL;
diff --git a/drivers/gpu/nvgpu/common/pmu/clk/clk_vin.c b/drivers/gpu/nvgpu/common/pmu/clk/clk_vin.c
index acbd072fd..ad46d45ee 100644
--- a/drivers/gpu/nvgpu/common/pmu/clk/clk_vin.c
+++ b/drivers/gpu/nvgpu/common/pmu/clk/clk_vin.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -145,6 +145,8 @@ static int _clk_vin_devgrp_pmustatus_instget(struct gk20a *g,
 		(struct nv_pmu_clk_clk_vin_device_boardobj_grp_get_status *)
 		pboardobjgrppmu;
 
+	(void)g;
+
 	/*check whether pmuboardobjgrp has a valid boardobj in index*/
 	if (((u32)BIT(idx) &
 		pgrp_get_status->hdr.data.super.obj_mask.super.data[0]) == 0U) {
@@ -326,7 +328,7 @@ static int devinit_get_vin_device_table(struct gk20a *g,
 		pvin_dev = construct_vin_device(g, (void *)&vin_device_data);
 
 		status = boardobjgrp_objinsert(&pvinobjs->super.super,
-				(struct pmu_board_obj *)pvin_dev, index);
+				(struct pmu_board_obj *)pvin_dev, (u8)index);
 
 		vin_tbl_entry_ptr += vin_desc_table_header.entry_size;
 	}
diff --git a/drivers/gpu/nvgpu/common/pmu/fw/fw.c b/drivers/gpu/nvgpu/common/pmu/fw/fw.c
index 85463d61c..89a7a1413 100644
--- a/drivers/gpu/nvgpu/common/pmu/fw/fw.c
+++ b/drivers/gpu/nvgpu/common/pmu/fw/fw.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2021, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -84,6 +84,9 @@ void nvgpu_pmu_fw_state_change(struct gk20a *g, struct nvgpu_pmu *pmu,
 u32 nvgpu_pmu_get_fw_state(struct gk20a *g, struct nvgpu_pmu *pmu)
 {
 	u32 state = pmu->fw->state;
+
+	(void)g;
+
 	nvgpu_smp_rmb();
 
 	return state;
@@ -92,6 +95,7 @@ u32 nvgpu_pmu_get_fw_state(struct gk20a *g, struct nvgpu_pmu *pmu)
 void nvgpu_pmu_set_fw_ready(struct gk20a *g, struct nvgpu_pmu *pmu,
 	bool status)
 {
+	(void)g;
 	nvgpu_smp_wmb();
 	pmu->fw->ready = status;
 }
@@ -99,6 +103,9 @@ void nvgpu_pmu_set_fw_ready(struct gk20a *g, struct nvgpu_pmu *pmu,
 bool nvgpu_pmu_get_fw_ready(struct gk20a *g, struct nvgpu_pmu *pmu)
 {
 	bool state = pmu->fw->ready;
+
+	(void)g;
+
 	nvgpu_smp_rmb();
 
 	return state;
@@ -194,18 +201,21 @@ static void pmu_fw_release(struct gk20a *g, struct pmu_rtos_fw *rtos_fw)
 struct nvgpu_firmware *nvgpu_pmu_fw_sig_desc(struct gk20a *g,
 	struct nvgpu_pmu *pmu)
 {
+	(void)g;
 	return pmu->fw->fw_sig;
 }
 
 struct nvgpu_firmware *nvgpu_pmu_fw_desc_desc(struct gk20a *g,
 	struct nvgpu_pmu *pmu)
 {
+	(void)g;
 	return pmu->fw->fw_desc;
 }
 
 struct nvgpu_firmware *nvgpu_pmu_fw_image_desc(struct gk20a *g,
 	struct nvgpu_pmu *pmu)
 {
+	(void)g;
 	return pmu->fw->fw_image;
 }
 
@@ -339,6 +349,8 @@ exit:
 void nvgpu_pmu_fw_deinit(struct gk20a *g, struct nvgpu_pmu *pmu,
 	struct pmu_rtos_fw *rtos_fw)
 {
+	(void)pmu;
+
 	nvgpu_log_fn(g, " ");
 
 	if (rtos_fw == NULL) {
diff --git a/drivers/gpu/nvgpu/common/pmu/fw/fw_ver_ops.c b/drivers/gpu/nvgpu/common/pmu/fw/fw_ver_ops.c
index 3ee2296e5..678565f44 100644
--- a/drivers/gpu/nvgpu/common/pmu/fw/fw_ver_ops.c
+++ b/drivers/gpu/nvgpu/common/pmu/fw/fw_ver_ops.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2021, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -52,6 +52,7 @@
 /* PMU version specific functions */
 static u32 pmu_perfmon_cntr_sz_v2(struct nvgpu_pmu *pmu)
 {
+	(void)pmu;
 	return (u32)sizeof(struct pmu_perfmon_counter_v2);
 }
 
@@ -95,6 +96,7 @@ static void pmu_set_cmd_line_args_trace_dma_base_v4(struct nvgpu_pmu *pmu)
 
 static u32 pmu_cmd_line_size_v4(struct nvgpu_pmu *pmu)
 {
+	(void)pmu;
 	return (u32)sizeof(struct pmu_cmdline_args_v4);
 }
 
@@ -120,16 +122,19 @@ static void pmu_set_cmd_line_args_trace_dma_idx_v4(
 
 static u32 pmu_cmd_line_size_v6(struct nvgpu_pmu *pmu)
 {
+	(void)pmu;
 	return (u32)sizeof(struct pmu_cmdline_args_v6);
 }
 
 static u32 pmu_cmd_line_size_v7(struct nvgpu_pmu *pmu)
 {
+	(void)pmu;
 	return (u32)sizeof(struct pmu_cmdline_args_v7);
 }
 
 static void pmu_set_cmd_line_args_cpu_freq_v5(struct nvgpu_pmu *pmu, u32 freq)
 {
+	(void)freq;
 	pmu->fw->args_v5.cpu_freq_hz = 204000000;
 }
 static void pmu_set_cmd_line_args_secure_mode_v5(struct nvgpu_pmu *pmu, u8 val)
@@ -140,6 +145,8 @@ static void pmu_set_cmd_line_args_secure_mode_v5(struct nvgpu_pmu *pmu, u8 val)
 static void pmu_set_cmd_line_args_trace_size_v5(
 			struct nvgpu_pmu *pmu, u32 size)
 {
+	(void)pmu;
+	(void)size;
 	/* set by surface describe */
 }
 
@@ -176,11 +183,14 @@ static void config_cmd_line_args_super_surface_v7(struct nvgpu_pmu *pmu)
 static void pmu_set_cmd_line_args_trace_dma_idx_v5(
 			struct nvgpu_pmu *pmu, u32 idx)
 {
+	(void)pmu;
+	(void)idx;
 	/* set by surface describe */
 }
 
 static u32 pmu_cmd_line_size_v3(struct nvgpu_pmu *pmu)
 {
+	(void)pmu;
 	return (u32)sizeof(struct pmu_cmdline_args_v3);
 }
 
@@ -228,16 +238,19 @@ static void *pmu_get_cmd_line_args_ptr_v5(struct nvgpu_pmu *pmu)
 
 static u32 pmu_get_allocation_size_v3(struct nvgpu_pmu *pmu)
 {
+	(void)pmu;
 	return (u32)sizeof(struct pmu_allocation_v3);
 }
 
 static u32 pmu_get_allocation_size_v2(struct nvgpu_pmu *pmu)
 {
+	(void)pmu;
 	return (u32)sizeof(struct pmu_allocation_v2);
 }
 
 static u32 pmu_get_allocation_size_v1(struct nvgpu_pmu *pmu)
 {
+	(void)pmu;
 	return (u32)sizeof(struct pmu_allocation_v1);
 }
 
@@ -247,6 +260,7 @@ static void pmu_set_allocation_ptr_v3(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v3 **pmu_a_ptr =
 		(struct pmu_allocation_v3 **)pmu_alloc_ptr;
 
+	(void)pmu;
 	*pmu_a_ptr = (struct pmu_allocation_v3 *)assign_ptr;
 }
 
@@ -256,6 +270,7 @@ static void pmu_set_allocation_ptr_v2(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v2 **pmu_a_ptr =
 		(struct pmu_allocation_v2 **)pmu_alloc_ptr;
 
+	(void)pmu;
 	*pmu_a_ptr = (struct pmu_allocation_v2 *)assign_ptr;
 }
 
@@ -265,6 +280,7 @@ static void pmu_set_allocation_ptr_v1(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v1 **pmu_a_ptr =
 		(struct pmu_allocation_v1 **)pmu_alloc_ptr;
 
+	(void)pmu;
 	*pmu_a_ptr = (struct pmu_allocation_v1 *)assign_ptr;
 }
 
@@ -274,6 +290,7 @@ static void pmu_allocation_set_dmem_size_v3(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v3 *pmu_a_ptr =
 		(struct pmu_allocation_v3 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	pmu_a_ptr->alloc.dmem.size = size;
 }
 
@@ -283,6 +300,7 @@ static void pmu_allocation_set_dmem_size_v2(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v2 *pmu_a_ptr =
 		(struct pmu_allocation_v2 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	pmu_a_ptr->alloc.dmem.size = size;
 }
 
@@ -292,6 +310,7 @@ static void pmu_allocation_set_dmem_size_v1(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v1 *pmu_a_ptr =
 		(struct pmu_allocation_v1 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	pmu_a_ptr->alloc.dmem.size = size;
 }
 
@@ -301,6 +320,7 @@ static u16 pmu_allocation_get_dmem_size_v3(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v3 *pmu_a_ptr =
 		(struct pmu_allocation_v3 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	return pmu_a_ptr->alloc.dmem.size;
 }
 
@@ -310,6 +330,7 @@ static u16 pmu_allocation_get_dmem_size_v2(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v2 *pmu_a_ptr =
 		(struct pmu_allocation_v2 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	return pmu_a_ptr->alloc.dmem.size;
 }
 
@@ -319,6 +340,7 @@ static u16 pmu_allocation_get_dmem_size_v1(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v1 *pmu_a_ptr =
 		(struct pmu_allocation_v1 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	return pmu_a_ptr->alloc.dmem.size;
 }
 
@@ -328,6 +350,7 @@ static u32 pmu_allocation_get_dmem_offset_v3(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v3 *pmu_a_ptr =
 		(struct pmu_allocation_v3 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	return pmu_a_ptr->alloc.dmem.offset;
 }
 
@@ -337,6 +360,7 @@ static u32 pmu_allocation_get_dmem_offset_v2(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v2 *pmu_a_ptr =
 		(struct pmu_allocation_v2 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	return pmu_a_ptr->alloc.dmem.offset;
 }
 
@@ -346,6 +370,7 @@ static u32 pmu_allocation_get_dmem_offset_v1(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v1 *pmu_a_ptr =
 		(struct pmu_allocation_v1 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	return pmu_a_ptr->alloc.dmem.offset;
 }
 
@@ -355,6 +380,7 @@ static u32 *pmu_allocation_get_dmem_offset_addr_v3(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v3 *pmu_a_ptr =
 		(struct pmu_allocation_v3 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	return &pmu_a_ptr->alloc.dmem.offset;
 }
 
@@ -364,6 +390,7 @@ static void *pmu_allocation_get_fb_addr_v3(
 	struct pmu_allocation_v3 *pmu_a_ptr =
 			(struct pmu_allocation_v3 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	return (void *)&pmu_a_ptr->alloc.fb;
 }
 
@@ -373,6 +400,7 @@ static u32 pmu_allocation_get_fb_size_v3(
 	struct pmu_allocation_v3 *pmu_a_ptr =
 			(struct pmu_allocation_v3 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	return (u32)sizeof(pmu_a_ptr->alloc.fb);
 }
 
@@ -382,6 +410,7 @@ static u32 *pmu_allocation_get_dmem_offset_addr_v2(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v2 *pmu_a_ptr =
 		(struct pmu_allocation_v2 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	return &pmu_a_ptr->alloc.dmem.offset;
 }
 
@@ -391,6 +420,7 @@ static u32 *pmu_allocation_get_dmem_offset_addr_v1(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v1 *pmu_a_ptr =
 		(struct pmu_allocation_v1 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	return &pmu_a_ptr->alloc.dmem.offset;
 }
 
@@ -400,6 +430,7 @@ static void pmu_allocation_set_dmem_offset_v3(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v3 *pmu_a_ptr =
 		(struct pmu_allocation_v3 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	pmu_a_ptr->alloc.dmem.offset = offset;
 }
 
@@ -409,6 +440,7 @@ static void pmu_allocation_set_dmem_offset_v2(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v2 *pmu_a_ptr =
 		(struct pmu_allocation_v2 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	pmu_a_ptr->alloc.dmem.offset = offset;
 }
 
@@ -418,6 +450,7 @@ static void pmu_allocation_set_dmem_offset_v1(struct nvgpu_pmu *pmu,
 	struct pmu_allocation_v1 *pmu_a_ptr =
 		(struct pmu_allocation_v1 *)pmu_alloc_ptr;
 
+	(void)pmu;
 	pmu_a_ptr->alloc.dmem.offset = offset;
 }
 
diff --git a/drivers/gpu/nvgpu/common/pmu/ipc/pmu_cmd.c b/drivers/gpu/nvgpu/common/pmu/ipc/pmu_cmd.c
index 4910c2908..a9ae4813a 100644
--- a/drivers/gpu/nvgpu/common/pmu/ipc/pmu_cmd.c
+++ b/drivers/gpu/nvgpu/common/pmu/ipc/pmu_cmd.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2021, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -202,7 +202,7 @@ static int pmu_payload_allocate(struct gk20a *g, struct pmu_sequence *seq,
 		nvgpu_pmu_seq_set_fbq_out_offset(seq, buffer_size);
 		/* Save target address in FBQ work buffer. */
 		alloc->dmem_offset = buffer_size;
-		buffer_size += alloc->dmem_size;
+		buffer_size = (u16)(buffer_size + alloc->dmem_size);
 		nvgpu_pmu_seq_set_buffer_size(seq, buffer_size);
 	} else {
 		tmp = nvgpu_alloc(&pmu->dmem, alloc->dmem_size);
@@ -235,8 +235,8 @@ static int pmu_cmd_payload_setup_rpc(struct gk20a *g, struct pmu_cmd *cmd,
 
 	(void) memset(&alloc, 0, sizeof(struct falcon_payload_alloc));
 
-	alloc.dmem_size = payload->rpc.size_rpc +
-		payload->rpc.size_scratch;
+	alloc.dmem_size = (u16)(payload->rpc.size_rpc +
+		payload->rpc.size_scratch);
 
 	err = pmu_payload_allocate(g, seq, &alloc);
 	if (err != 0) {
diff --git a/drivers/gpu/nvgpu/common/pmu/ipc/pmu_msg.c b/drivers/gpu/nvgpu/common/pmu/ipc/pmu_msg.c
index fb0f0e274..6e5b18830 100644
--- a/drivers/gpu/nvgpu/common/pmu/ipc/pmu_msg.c
+++ b/drivers/gpu/nvgpu/common/pmu/ipc/pmu_msg.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2021, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -550,7 +550,7 @@ int nvgpu_pmu_process_message(struct nvgpu_pmu *pmu)
 		nvgpu_pmu_dbg(g, "ctrl_flags = 0x%08x, seq_id = 0x%08x",
 			msg.hdr.ctrl_flags, msg.hdr.seq_id);
 
-		msg.hdr.ctrl_flags &= ~PMU_CMD_FLAGS_PMU_MASK;
+		msg.hdr.ctrl_flags &= (u8)(~PMU_CMD_FLAGS_PMU_MASK);
 
 		if ((msg.hdr.ctrl_flags == PMU_CMD_FLAGS_EVENT) ||
 			(msg.hdr.ctrl_flags == PMU_CMD_FLAGS_RPC_EVENT)) {
@@ -617,6 +617,8 @@ void nvgpu_pmu_rpc_handler(struct gk20a *g, struct pmu_msg *msg,
 	struct rpc_handler_payload *rpc_payload =
 		(struct rpc_handler_payload *)param;
 
+	(void)status;
+
 	if (nvgpu_can_busy(g) == 0) {
 		return;
 	}
diff --git a/drivers/gpu/nvgpu/common/pmu/ipc/pmu_seq.c b/drivers/gpu/nvgpu/common/pmu/ipc/pmu_seq.c
index 06cb5d910..fbe6b010c 100644
--- a/drivers/gpu/nvgpu/common/pmu/ipc/pmu_seq.c
+++ b/drivers/gpu/nvgpu/common/pmu/ipc/pmu_seq.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -26,6 +26,7 @@
 #include <nvgpu/kmem.h>
 #include <nvgpu/bug.h>
 #include <nvgpu/pmu.h>
+#include <nvgpu/string.h>
 
 struct nvgpu_pmu;
 
@@ -34,6 +35,8 @@ void nvgpu_pmu_sequences_sw_setup(struct gk20a *g, struct nvgpu_pmu *pmu,
 {
 	u32 i;
 
+	(void)pmu;
+
 	nvgpu_log_fn(g, " ");
 
 	(void) memset(sequences->seq, 0,
@@ -52,6 +55,8 @@ int nvgpu_pmu_sequences_init(struct gk20a *g, struct nvgpu_pmu *pmu,
 	int err = 0;
 	struct pmu_sequences *sequences;
 
+	(void)pmu;
+
 	nvgpu_log_fn(g, " ");
 
 	if (*sequences_p != NULL) {
@@ -85,6 +90,8 @@ exit:
 void nvgpu_pmu_sequences_deinit(struct gk20a *g, struct nvgpu_pmu *pmu,
 	struct pmu_sequences *sequences)
 {
+	(void)pmu;
+
 	nvgpu_log_fn(g, " ");
 
 	if (sequences == NULL) {
@@ -145,6 +152,8 @@ void nvgpu_pmu_seq_release(struct gk20a *g,
 			   struct pmu_sequences *sequences,
 			   struct pmu_sequence *seq)
 {
+	(void)g;
+
 	seq->state	= PMU_SEQ_STATE_FREE;
 	seq->callback	= NULL;
 	seq->cb_params	= NULL;
@@ -258,6 +267,6 @@ void nvgpu_pmu_seq_callback(struct gk20a *g, struct pmu_sequence *seq,
 			    struct pmu_msg *msg, int err)
 {
 	if (seq->callback != NULL) {
-		seq->callback(g, msg, seq->cb_params, err);
+		seq->callback(g, msg, seq->cb_params, (u32)err);
 	}
 }
diff --git a/drivers/gpu/nvgpu/common/pmu/lpwr/rppg.c b/drivers/gpu/nvgpu/common/pmu/lpwr/rppg.c
index 0caadd6ac..ac8615fe5 100644
--- a/drivers/gpu/nvgpu/common/pmu/lpwr/rppg.c
+++ b/drivers/gpu/nvgpu/common/pmu/lpwr/rppg.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2019, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -24,6 +24,7 @@
 #include <nvgpu/gk20a.h>
 #include <nvgpu/pmu/lpwr.h>
 #include <nvgpu/bug.h>
+#include <nvgpu/string.h>
 #include <nvgpu/pmu/cmd.h>
 #include <nvgpu/pmu/pmu_pstate.h>
 
diff --git a/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm.c b/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm.c
index 939dabf5d..032bda643 100644
--- a/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm.c
+++ b/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2021, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2019-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -41,6 +41,7 @@
 static bool is_lsfm_supported(struct gk20a *g,
 	struct nvgpu_pmu *pmu, struct nvgpu_pmu_lsfm *lsfm)
 {
+	(void)pmu;
 	/*
 	 * Low secure falcon manager is a secure iGPU functionality to support
 	 * Lazy bootstrap feature. Enabling lsfm will allow nvgpu to send cmds
diff --git a/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm_sw_gm20b.c b/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm_sw_gm20b.c
index 5794cfe1e..64c259173 100644
--- a/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm_sw_gm20b.c
+++ b/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm_sw_gm20b.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2015-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -24,6 +24,7 @@
 #include <nvgpu/pmu.h>
 #include <nvgpu/gk20a.h>
 #include <nvgpu/bug.h>
+#include <nvgpu/string.h>
 #include <nvgpu/pmu/cmd.h>
 #include <nvgpu/pmu/lsfm.h>
 #include <nvgpu/pmu/fw.h>
@@ -36,6 +37,9 @@ static void lsfm_handle_acr_init_wpr_region_msg(struct gk20a *g,
 {
 	struct nvgpu_pmu *pmu = g->pmu;
 
+	(void)param;
+	(void)status;
+
 	nvgpu_log_fn(g, " ");
 
 	nvgpu_pmu_dbg(g, "reply PMU_ACR_CMD_ID_INIT_WPR_REGION");
@@ -76,6 +80,9 @@ void gm20b_pmu_lsfm_handle_bootstrap_falcon_msg(struct gk20a *g,
 {
 	struct nvgpu_pmu *pmu = g->pmu;
 
+	(void)param;
+	(void)status;
+
 	nvgpu_log_fn(g, " ");
 
 	nvgpu_pmu_dbg(g, "reply PMU_ACR_CMD_ID_BOOTSTRAP_FALCON");
@@ -179,7 +186,7 @@ int gm20b_pmu_lsfm_pmu_cmd_line_args_copy(struct gk20a *g,
 
 	/* Copying pmu cmdline args */
 	pmu->fw->ops.set_cmd_line_args_cpu_freq(pmu,
-		g->ops.clk.get_rate(g, CTRL_CLK_DOMAIN_PWRCLK));
+		(u32)g->ops.clk.get_rate(g, CTRL_CLK_DOMAIN_PWRCLK));
 	pmu->fw->ops.set_cmd_line_args_secure_mode(pmu, 1U);
 	pmu->fw->ops.set_cmd_line_args_trace_size(
 		pmu, PMU_RTOS_TRACE_BUFSIZE);
diff --git a/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm_sw_gp10b.c b/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm_sw_gp10b.c
index 749386f03..0a1bd1944 100644
--- a/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm_sw_gp10b.c
+++ b/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm_sw_gp10b.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2015-2019, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2015-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -24,6 +24,7 @@
 #include <nvgpu/pmu.h>
 #include <nvgpu/gk20a.h>
 #include <nvgpu/bug.h>
+#include <nvgpu/string.h>
 #include <nvgpu/pmu/cmd.h>
 #include <nvgpu/pmu/lsfm.h>
 
diff --git a/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm_sw_gv100.c b/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm_sw_gv100.c
index df032f987..18424c28c 100644
--- a/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm_sw_gv100.c
+++ b/drivers/gpu/nvgpu/common/pmu/lsfm/lsfm_sw_gv100.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2021, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -25,6 +25,7 @@
 #include <nvgpu/gk20a.h>
 #include <nvgpu/pmu/cmd.h>
 #include <nvgpu/bug.h>
+#include <nvgpu/string.h>
 #include <nvgpu/pmu/cmd.h>
 #include <nvgpu/pmu/lsfm.h>
 #include <nvgpu/pmu/fw.h>
diff --git a/drivers/gpu/nvgpu/common/pmu/perf/change_seq.c b/drivers/gpu/nvgpu/common/pmu/perf/change_seq.c
index fd752f12b..6eb488606 100644
--- a/drivers/gpu/nvgpu/common/pmu/perf/change_seq.c
+++ b/drivers/gpu/nvgpu/common/pmu/perf/change_seq.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -25,6 +25,7 @@
 #include <nvgpu/gk20a.h>
 #include <nvgpu/timers.h>
 #include <nvgpu/boardobjgrp_e32.h>
+#include <nvgpu/string.h>
 #include <nvgpu/pmu/clk/clk.h>
 #include <nvgpu/pmu/perf.h>
 #include <nvgpu/pmu/cmd.h>
@@ -134,7 +135,7 @@ static void build_change_seq_boot (struct gk20a *g)
 
 	/* Assume everything is P0 - Need to find the index for P0  */
 	script_last->buf.change.data.pstate_index =
-			perf_pstate_get_table_entry_idx(g, CTRL_PERF_PSTATE_P0);
+			(u32)perf_pstate_get_table_entry_idx(g, CTRL_PERF_PSTATE_P0);
 
 	nvgpu_mem_wr_n(g, nvgpu_pmu_super_surface_mem(g,
 		pmu, pmu->super_surface),
@@ -213,7 +214,7 @@ int perf_change_seq_pmu_setup(struct gk20a *g)
 
 	/* Assume everything is P0 - Need to find the index for P0  */
 	perf_change_seq_pmu->script_last.buf.change.data.pstate_index =
-			perf_pstate_get_table_entry_idx(g, CTRL_PERF_PSTATE_P0);;
+			(u32)perf_pstate_get_table_entry_idx(g, CTRL_PERF_PSTATE_P0);
 
 	nvgpu_mem_wr_n(g, nvgpu_pmu_super_surface_mem(g,
 		pmu, pmu->super_surface),
@@ -254,7 +255,7 @@ int nvgpu_pmu_perf_changeseq_set_clks(struct gk20a *g,
 			vf_point, &change_input.clk);
 
 	change_input.pstate_index =
-			perf_pstate_get_table_entry_idx(g, CTRL_PERF_PSTATE_P0);
+			(u32)perf_pstate_get_table_entry_idx(g, CTRL_PERF_PSTATE_P0);
 	change_input.flags = (u32)CTRL_PERF_CHANGE_SEQ_CHANGE_FORCE;
 	change_input.vf_points_cache_counter = 0xFFFFFFFFU;
 
@@ -299,7 +300,7 @@ int nvgpu_pmu_perf_changeseq_set_clks(struct gk20a *g,
 			sizeof(struct nv_pmu_rpc_perf_change_seq_queue_change));
 	rpc.change = change_input;
 	rpc.change.pstate_index =
-			perf_pstate_get_table_entry_idx(g, CTRL_PERF_PSTATE_P0);
+			(u32)perf_pstate_get_table_entry_idx(g, CTRL_PERF_PSTATE_P0);
 	change_seq_pmu->change_state = 0U;
 	change_seq_pmu->start_time = nvgpu_current_time_us();
 	PMU_RPC_EXECUTE_CPB(status, pmu, PERF,
diff --git a/drivers/gpu/nvgpu/common/pmu/perf/perf.c b/drivers/gpu/nvgpu/common/pmu/perf/perf.c
index b8fd5330a..e76b50fe9 100644
--- a/drivers/gpu/nvgpu/common/pmu/perf/perf.c
+++ b/drivers/gpu/nvgpu/common/pmu/perf/perf.c
@@ -1,6 +1,6 @@
 /*
  *
- * Copyright (c) 2018-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2018-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -24,6 +24,7 @@
 #include <nvgpu/pmu.h>
 #include <nvgpu/bug.h>
 #include <nvgpu/gk20a.h>
+#include <nvgpu/string.h>
 #include <nvgpu/pmu/clk/clk.h>
 #include <nvgpu/clk_arb.h>
 #include <nvgpu/pmu/perf.h>
diff --git a/drivers/gpu/nvgpu/common/pmu/perf/pstate.c b/drivers/gpu/nvgpu/common/pmu/perf/pstate.c
index 96c84c0be..c17d4859b 100644
--- a/drivers/gpu/nvgpu/common/pmu/perf/pstate.c
+++ b/drivers/gpu/nvgpu/common/pmu/perf/pstate.c
@@ -1,7 +1,7 @@
 /*
  * general p state infrastructure
  *
- * Copyright (c) 2019-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2019-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -28,6 +28,7 @@
 #include <nvgpu/boardobjgrp.h>
 #include <nvgpu/boardobjgrp_e32.h>
 #include <nvgpu/boardobjgrp_e255.h>
+#include <nvgpu/string.h>
 #include <nvgpu/pmu/boardobjgrp_classes.h>
 #include <nvgpu/pmu/clk/clk.h>
 #include <nvgpu/pmu/perf.h>
@@ -85,22 +86,22 @@ static int pstate_init_pmudata(struct gk20a *g,
 
 	for (clkidx = 0; clkidx < pstate->clklist.num_info; clkidx++) {
 		pstate_pmu_data->clkEntries[clkidx].max.baseFreqKhz =
-			pstate->clklist.clksetinfo[clkidx].max_mhz*1000;
+			(u32)(pstate->clklist.clksetinfo[clkidx].max_mhz*1000);
 		pstate_pmu_data->clkEntries[clkidx].max.freqKz =
-			pstate->clklist.clksetinfo[clkidx].max_mhz*1000;
+			(u32)(pstate->clklist.clksetinfo[clkidx].max_mhz*1000);
 		pstate_pmu_data->clkEntries[clkidx].max.origFreqKhz =
-			pstate->clklist.clksetinfo[clkidx].max_mhz*1000;
+			(u32)(pstate->clklist.clksetinfo[clkidx].max_mhz*1000);
 		pstate_pmu_data->clkEntries[clkidx].max.porFreqKhz =
-			pstate->clklist.clksetinfo[clkidx].max_mhz*1000;
+			(u32)(pstate->clklist.clksetinfo[clkidx].max_mhz*1000);
 
 		pstate_pmu_data->clkEntries[clkidx].min.baseFreqKhz =
-			pstate->clklist.clksetinfo[clkidx].min_mhz*1000;
+			(u32)(pstate->clklist.clksetinfo[clkidx].min_mhz*1000);
 		pstate_pmu_data->clkEntries[clkidx].min.freqKz =
-			pstate->clklist.clksetinfo[clkidx].min_mhz*1000;
+			(u32)(pstate->clklist.clksetinfo[clkidx].min_mhz*1000);
 		pstate_pmu_data->clkEntries[clkidx].min.origFreqKhz =
-			pstate->clklist.clksetinfo[clkidx].min_mhz*1000;
+			(u32)(pstate->clklist.clksetinfo[clkidx].min_mhz*1000);
 		pstate_pmu_data->clkEntries[clkidx].min.porFreqKhz =
-			pstate->clklist.clksetinfo[clkidx].min_mhz*1000;
+			(u32)(pstate->clklist.clksetinfo[clkidx].min_mhz*1000);
 
 		pstate_pmu_data->clkEntries[clkidx].nom.baseFreqKhz =
 			pstate->clklist.clksetinfo[clkidx].nominal_mhz*1000;
@@ -347,7 +348,7 @@ static int perf_pstate_pmudatainit(struct gk20a *g,
 
 	pset->numClkDomains = pprogs->num_clk_domains;
 	pset->boot_pstate_idx =
-			perf_pstate_get_table_entry_idx(g, CTRL_PERF_PSTATE_P0);
+			(u8)perf_pstate_get_table_entry_idx(g, CTRL_PERF_PSTATE_P0);
 
 done:
 	return status;
@@ -361,6 +362,8 @@ static int perf_pstate_pmudata_instget(struct gk20a *g,
 		(struct nv_pmu_perf_pstate_boardobj_grp_set *)
 		(void *)pmuboardobjgrp;
 
+	(void)g;
+
 	/* check whether pmuboardobjgrp has a valid boardobj in index */
 	if (idx >= CTRL_BOARDOBJGRP_E32_MAX_OBJECTS) {
 		return -EINVAL;
diff --git a/drivers/gpu/nvgpu/common/pmu/perf/vfe_equ.c b/drivers/gpu/nvgpu/common/pmu/perf/vfe_equ.c
index 596a384d3..f13565cfd 100644
--- a/drivers/gpu/nvgpu/common/pmu/perf/vfe_equ.c
+++ b/drivers/gpu/nvgpu/common/pmu/perf/vfe_equ.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -41,7 +41,7 @@ static int vfe_equ_node_depending_mask_combine(struct gk20a *g,
 		struct boardobjgrp *pboardobjgrp, u8 equ_idx,
 		struct boardobjgrpmask *pmask_dst)
 {
-	int status;
+	int status = 0;
 	struct vfe_equ *tmp_vfe_equ;
 
 	while (equ_idx != CTRL_BOARDOBJ_IDX_INVALID) {
@@ -145,6 +145,7 @@ static int vfe_equ_build_depending_mask_quad(struct gk20a *g,
 		struct boardobjgrp *pboardobjgrp,
 		struct vfe_equ *pvfe_equ)
 {
+	(void)pboardobjgrp;
 	return vfe_equ_build_depending_mask_super(g, pvfe_equ);
 }
 
@@ -176,7 +177,7 @@ static int vfe_equ_build_depending_mask_equ_scalar(struct gk20a *g,
 static int vfe_equ_dependency_mask_build(struct gk20a *g,
 		struct vfe_equs *pvfe_equs, struct vfe_vars *pvfe_vars)
 {
-	int status;
+	int status = 0;
 	struct vfe_equ *tmp_vfe_equ;
 	struct vfe_var *tmp_vfe_var;
 	u8 index_1, index_2;
@@ -839,7 +840,7 @@ static int devinit_get_vfe_equ_table(struct gk20a *g,
 		}
 
 		status = boardobjgrp_objinsert(&pvfeequobjs->super.super,
-					       (struct pmu_board_obj *)pequ, index);
+					       (struct pmu_board_obj *)pequ, (u8)index);
 		if (status != 0) {
 			nvgpu_err(g, "error adding vfe_equ boardobj %d", index);
 			status = -EINVAL;
diff --git a/drivers/gpu/nvgpu/common/pmu/perf/vfe_var.c b/drivers/gpu/nvgpu/common/pmu/perf/vfe_var.c
index 2c45dd71f..06b2423df 100644
--- a/drivers/gpu/nvgpu/common/pmu/perf/vfe_var.c
+++ b/drivers/gpu/nvgpu/common/pmu/perf/vfe_var.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -84,6 +84,8 @@ static int vfe_vars_pmustatus_instget(struct gk20a *g, void *pboardobjgrppmu,
 		(struct nv_pmu_perf_vfe_var_boardobj_grp_get_status *)
 		pboardobjgrppmu;
 
+	(void)g;
+
 	if (((u32)BIT(idx) &
 		pgrp_get_status->hdr.data.super.obj_mask.super.data[0]) == 0U) {
 		return -EINVAL;
@@ -129,7 +131,7 @@ static int vfe_var_get_s_param_value(struct gk20a *g,
 static int vfe_var_dependency_mask_build(struct gk20a *g,
 		struct vfe_vars *pvfe_vars)
 {
-	int status;
+	int status = 0;
 	u8 index_1 = 0, index_2 = 0;
 	struct vfe_var *tmp_vfe_var_1 = NULL, *tmp_vfe_var_2 = NULL;
 	struct pmu_board_obj *obj_tmp_1 = NULL, *obj_tmp_2 = NULL;
@@ -331,6 +333,9 @@ static int vfe_var_build_depending_mask_null(struct gk20a *g,
 		struct boardobjgrp *pboardobjgrp,
 		struct vfe_var *pvfe_var)
 {
+	(void)g;
+	(void)pboardobjgrp;
+	(void)pvfe_var;
 	/* Individual vfe_var members should over_ride this with their */
 	/* respective function types */
 	return -EINVAL;
@@ -640,6 +645,8 @@ static int vfe_var_build_depending_mask_single(struct gk20a *g,
 		struct boardobjgrp *pboardobjgrp,
 		struct vfe_var *pvfe_var)
 {
+	(void)g;
+	(void)pboardobjgrp;
 	return nvgpu_boardobjgrpmask_bit_set(
 			&pvfe_var->mask_depending_vars.super,
 			pvfe_var->super.idx);
@@ -1266,7 +1273,7 @@ static int devinit_get_vfe_var_table(struct gk20a *g,
 		}
 
 		status = boardobjgrp_objinsert(&pvfevarobjs->super.super,
-					       (struct pmu_board_obj *)pvar, index);
+					       (struct pmu_board_obj *)pvar, (u8)index);
 		if (status != 0) {
 			nvgpu_err(g, "error adding vfe_var boardobj %d", index);
 			status = -EINVAL;
diff --git a/drivers/gpu/nvgpu/common/pmu/perfmon/pmu_perfmon.c b/drivers/gpu/nvgpu/common/pmu/perfmon/pmu_perfmon.c
index b2714a213..c0caaf701 100644
--- a/drivers/gpu/nvgpu/common/pmu/perfmon/pmu_perfmon.c
+++ b/drivers/gpu/nvgpu/common/pmu/perfmon/pmu_perfmon.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2021, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -33,6 +33,7 @@
 #include <nvgpu/bug.h>
 #include <nvgpu/pmu/pmuif/nvgpu_cmdif.h>
 #include <nvgpu/kmem.h>
+#include <nvgpu/string.h>
 
 #include "pmu_perfmon_sw_gm20b.h"
 #include "pmu_perfmon_sw_gv11b.h"
@@ -122,6 +123,8 @@ int nvgpu_pmu_initialize_perfmon(struct gk20a *g, struct nvgpu_pmu *pmu,
 	int err = 0;
 	u32 ver = g->params.gpu_arch + g->params.gpu_impl;
 
+	(void)pmu;
+
 	if (*perfmon_ptr != NULL) {
 		/* Not to allocate a new buffer after railgating
 		is done. Use the same memory for pmu_perfmon
@@ -705,27 +708,28 @@ u32 nvgpu_pmu_perfmon_get_load_avg(struct nvgpu_pmu *pmu)
 int nvgpu_pmu_perfmon_initialization(struct gk20a *g,
 	struct nvgpu_pmu *pmu, struct nvgpu_pmu_perfmon *perfmon)
 {
+	(void)g;
 	return perfmon->init_perfmon(pmu);
 }
 
 int nvgpu_pmu_perfmon_start_sample(struct gk20a *g,
 	struct nvgpu_pmu *pmu, struct nvgpu_pmu_perfmon *perfmon)
 {
-
+	(void)g;
 	return perfmon->start_sampling(pmu);
 }
 
 int nvgpu_pmu_perfmon_stop_sample(struct gk20a *g,
 	struct nvgpu_pmu *pmu, struct nvgpu_pmu_perfmon *perfmon)
 {
-
+	(void)g;
 	return perfmon->stop_sampling(pmu);
 }
 
 int nvgpu_pmu_perfmon_get_sample(struct gk20a *g,
 	struct nvgpu_pmu *pmu, struct nvgpu_pmu_perfmon *perfmon)
 {
-
+	(void)g;
 	return perfmon->get_samples_rpc(pmu);
 }
 
diff --git a/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gm20b.c b/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gm20b.c
index 26a25c398..5158c4196 100644
--- a/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gm20b.c
+++ b/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gm20b.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -27,17 +27,21 @@
 #include <nvgpu/bug.h>
 #include <nvgpu/pmu/pmu_pg.h>
 #include <nvgpu/engines.h>
+#include <nvgpu/string.h>
 
 #include "pg_sw_gm20b.h"
 #include "pmu_pg.h"
 
 u32 gm20b_pmu_pg_engines_list(struct gk20a *g)
 {
+	(void)g;
 	return BIT32(PMU_PG_ELPG_ENGINE_ID_GRAPHICS);
 }
 
 u32 gm20b_pmu_pg_feature_list(struct gk20a *g, u32 pg_engine_id)
 {
+	(void)g;
+
 	if (pg_engine_id == PMU_PG_ELPG_ENGINE_ID_GRAPHICS) {
 		return NVGPU_PMU_GR_FEATURE_MASK_POWER_GATING;
 	}
@@ -49,6 +53,8 @@ static void pmu_handle_zbc_msg(struct gk20a *g, struct pmu_msg *msg,
 	void *param, u32 status)
 {
 	struct nvgpu_pmu *pmu = param;
+	(void)msg;
+	(void)status;
 	nvgpu_pmu_dbg(g, "reply ZBC_TABLE_UPDATE");
 	pmu->pg->zbc_save_done = true;
 }
@@ -342,6 +348,8 @@ int gm20b_pmu_pg_init_send(struct gk20a *g, struct nvgpu_pmu *pmu,
 void nvgpu_gm20b_pg_sw_init(struct gk20a *g,
 		struct nvgpu_pmu_pg *pg)
 {
+	(void)g;
+
 	pg->elpg_statistics = gm20b_pmu_elpg_statistics;
 	pg->init_param = NULL;
 	pg->supported_engines_list = gm20b_pmu_pg_engines_list;
diff --git a/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gp106.c b/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gp106.c
index bfa3943ff..4d4cce6f0 100644
--- a/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gp106.c
+++ b/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gp106.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -26,6 +26,7 @@
 #include <nvgpu/bug.h>
 #include <nvgpu/pmu/cmd.h>
 #include <nvgpu/clk_arb.h>
+#include <nvgpu/string.h>
 #include <nvgpu/pmu/pmu_pg.h>
 
 #include "pg_sw_gp106.h"
@@ -33,6 +34,8 @@
 static void pmu_handle_param_msg(struct gk20a *g, struct pmu_msg *msg,
 			void *param, u32 status)
 {
+	(void)param;
+
 	nvgpu_log_fn(g, " ");
 
 	if (status != 0U) {
@@ -125,12 +128,15 @@ int gp106_pmu_elpg_statistics(struct gk20a *g, u32 pg_engine_id,
 
 u32 gp106_pmu_pg_engines_list(struct gk20a *g)
 {
+	(void)g;
 	return BIT32(PMU_PG_ELPG_ENGINE_ID_GRAPHICS) |
 		BIT32(PMU_PG_ELPG_ENGINE_ID_MS);
 }
 
 u32 gp106_pmu_pg_feature_list(struct gk20a *g, u32 pg_engine_id)
 {
+	(void)g;
+
 	if (pg_engine_id == PMU_PG_ELPG_ENGINE_ID_GRAPHICS) {
 		return NVGPU_PMU_GR_FEATURE_MASK_RPPG;
 	}
@@ -144,5 +150,7 @@ u32 gp106_pmu_pg_feature_list(struct gk20a *g, u32 pg_engine_id)
 
 bool gp106_pmu_is_lpwr_feature_supported(struct gk20a *g, u32 feature_id)
 {
+	(void)g;
+	(void)feature_id;
 	return false;
 }
diff --git a/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gp10b.c b/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gp10b.c
index f609dbffd..af6b31e07 100644
--- a/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gp10b.c
+++ b/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gp10b.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -24,6 +24,7 @@
 #include <nvgpu/log.h>
 #include <nvgpu/gk20a.h>
 #include <nvgpu/bug.h>
+#include <nvgpu/string.h>
 #include <nvgpu/pmu/cmd.h>
 #include <nvgpu/pmu/pmu_pg.h>
 
@@ -33,6 +34,8 @@
 static void pmu_handle_gr_param_msg(struct gk20a *g, struct pmu_msg *msg,
 				void *param, u32 status)
 {
+	(void)param;
+
 	nvgpu_log_fn(g, " ");
 
 	if (status != 0U) {
@@ -106,6 +109,8 @@ int gp10b_pmu_elpg_statistics(struct gk20a *g, u32 pg_engine_id,
 void nvgpu_gp10b_pg_sw_init(struct gk20a *g,
 		struct nvgpu_pmu_pg *pg)
 {
+	(void)g;
+
 	pg->elpg_statistics = gp10b_pmu_elpg_statistics;
 	pg->init_param = gp10b_pg_gr_init;
 	pg->supported_engines_list = gm20b_pmu_pg_engines_list;
diff --git a/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gv11b.c b/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gv11b.c
index e953f8341..57ba36b10 100644
--- a/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gv11b.c
+++ b/drivers/gpu/nvgpu/common/pmu/pg/pg_sw_gv11b.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -23,6 +23,7 @@
 #include <nvgpu/pmu.h>
 #include <nvgpu/gk20a.h>
 #include <nvgpu/bug.h>
+#include <nvgpu/string.h>
 #include <nvgpu/pmu/cmd.h>
 #include <nvgpu/pmu/pmu_pg.h>
 
@@ -33,6 +34,8 @@
 static void pmu_handle_pg_sub_feature_msg(struct gk20a *g, struct pmu_msg *msg,
 			void *param, u32 status)
 {
+	(void)param;
+
 	nvgpu_log_fn(g, " ");
 
 	if (status != 0U) {
@@ -47,6 +50,8 @@ static void pmu_handle_pg_sub_feature_msg(struct gk20a *g, struct pmu_msg *msg,
 static void pmu_handle_pg_param_msg(struct gk20a *g, struct pmu_msg *msg,
 			void *param, u32 status)
 {
+	(void)param;
+
 	nvgpu_log_fn(g, " ");
 
 	if (status != 0U) {
@@ -132,6 +137,8 @@ int gv11b_pg_set_subfeature_mask(struct gk20a *g, u32 pg_engine_id)
 void nvgpu_gv11b_pg_sw_init(struct gk20a *g,
 		struct nvgpu_pmu_pg *pg)
 {
+	(void)g;
+
 	pg->elpg_statistics = gp106_pmu_elpg_statistics;
 	pg->init_param = gv11b_pg_gr_init;
 	pg->supported_engines_list = gm20b_pmu_pg_engines_list;
diff --git a/drivers/gpu/nvgpu/common/pmu/pg/pmu_aelpg.c b/drivers/gpu/nvgpu/common/pmu/pg/pmu_aelpg.c
index 1bfbe8db5..b15a467fa 100644
--- a/drivers/gpu/nvgpu/common/pmu/pg/pmu_aelpg.c
+++ b/drivers/gpu/nvgpu/common/pmu/pg/pmu_aelpg.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2019-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -75,6 +75,8 @@ static void ap_callback_init_and_enable_ctrl(
 		struct gk20a *g, struct pmu_msg *msg,
 		void *param, u32 status)
 {
+	(void)param;
+
 	WARN_ON(msg == NULL);
 
 	if (status == 0U) {
@@ -101,6 +103,8 @@ int nvgpu_pmu_ap_send_command(struct gk20a *g,
 	pmu_callback p_callback = NULL;
 	u64 tmp;
 
+	(void)b_block;
+
 	(void) memset(&cmd, 0, sizeof(struct pmu_cmd));
 
 	/* Copy common members */
diff --git a/drivers/gpu/nvgpu/common/pmu/pg/pmu_pg.c b/drivers/gpu/nvgpu/common/pmu/pg/pmu_pg.c
index 5883e84b2..fca21b6cb 100644
--- a/drivers/gpu/nvgpu/common/pmu/pg/pmu_pg.c
+++ b/drivers/gpu/nvgpu/common/pmu/pg/pmu_pg.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2021, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -679,6 +679,8 @@ static int pmu_pg_init_powergating(struct gk20a *g, struct nvgpu_pmu *pmu,
 	u32 pg_engine_id_list = 0;
 	int err = 0;
 
+	(void)pg;
+
 	nvgpu_log_fn(g, " ");
 
 	if (pmu->pg->supported_engines_list != NULL) {
@@ -747,6 +749,8 @@ static int pmu_pg_init_bind_fecs(struct gk20a *g, struct nvgpu_pmu *pmu,
 	int err = 0;
 	nvgpu_log_fn(g, " ");
 
+	(void)pg;
+
 	nvgpu_pmu_dbg(g,
 		"cmd post PMU_PG_CMD_ID_ENG_BUF_LOAD PMU_PGENG_GR_BUFFER_IDX_FECS");
 	nvgpu_pmu_fw_state_change(g, pmu, PMU_FW_STATE_LOADING_PG_BUF, false);
@@ -767,6 +771,8 @@ static int pmu_pg_setup_hw_load_zbc(struct gk20a *g, struct nvgpu_pmu *pmu,
 {
 	int err = 0;
 
+	(void)pg;
+
 	nvgpu_pmu_dbg(g,
 		"cmd post PMU_PG_CMD_ID_ENG_BUF_LOAD PMU_PGENG_GR_BUFFER_IDX_ZBC");
 	nvgpu_pmu_fw_state_change(g, pmu, PMU_FW_STATE_LOADING_ZBC, false);
@@ -935,6 +941,8 @@ static int pmu_pg_init_seq_buf(struct gk20a *g, struct nvgpu_pmu *pmu,
 	int err;
 	u8 *ptr;
 
+	(void)pmu;
+
 	err = nvgpu_dma_alloc_map_sys(vm, PMU_PG_SEQ_BUF_SIZE,
 				&pg->seq_buf);
 	if (err != 0) {
@@ -1038,6 +1046,8 @@ int nvgpu_pmu_pg_init(struct gk20a *g, struct nvgpu_pmu *pmu,
 	int err = 0;
 	u32 ver = g->params.gpu_arch + g->params.gpu_impl;
 
+	(void)pmu;
+
 	if (!g->support_ls_pmu || !g->can_elpg) {
 		return 0;
 	}
@@ -1106,6 +1116,8 @@ void nvgpu_pmu_pg_deinit(struct gk20a *g, struct nvgpu_pmu *pmu,
 	struct mm_gk20a *mm = &g->mm;
 	struct vm_gk20a *vm = mm->pmu.vm;
 
+	(void)pmu;
+
 	if (!is_pg_supported(g, pg)) {
 		return;
 	}
diff --git a/drivers/gpu/nvgpu/common/pmu/pmgr/pmgrpmu.c b/drivers/gpu/nvgpu/common/pmu/pmgr/pmgrpmu.c
index f4586ec64..8837362f4 100644
--- a/drivers/gpu/nvgpu/common/pmu/pmgr/pmgrpmu.c
+++ b/drivers/gpu/nvgpu/common/pmu/pmgr/pmgrpmu.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -44,6 +44,8 @@ static void pmgr_pmucmdhandler(struct gk20a *g, struct pmu_msg *msg,
 	struct pmgr_pmucmdhandler_params *phandlerparams =
 		(struct pmgr_pmucmdhandler_params *)param;
 
+	(void)status;
+
 	if ((msg->msg.pmgr.msg_type != NV_PMU_PMGR_MSG_ID_SET_OBJECT) &&
 		(msg->msg.pmgr.msg_type != NV_PMU_PMGR_MSG_ID_QUERY) &&
 		(msg->msg.pmgr.msg_type != NV_PMU_PMGR_MSG_ID_LOAD)) {
@@ -459,7 +461,7 @@ exit:
 
 static int pmgr_pmu_load_blocking(struct gk20a *g)
 {
-	struct pmu_cmd cmd = { {0} };
+	struct pmu_cmd cmd = { };
 	struct nv_pmu_pmgr_cmd_load *pcmd;
 	int status;
 	struct pmgr_pmucmdhandler_params handlerparams = {0};
diff --git a/drivers/gpu/nvgpu/common/pmu/pmgr/pwrdev.c b/drivers/gpu/nvgpu/common/pmu/pmgr/pwrdev.c
index a770e3c43..460ee0e90 100644
--- a/drivers/gpu/nvgpu/common/pmu/pmgr/pwrdev.c
+++ b/drivers/gpu/nvgpu/common/pmu/pmgr/pwrdev.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -100,6 +100,8 @@ static struct pmu_board_obj *construct_pwr_device(struct gk20a *g,
 	struct pwr_device_ina3221 *pwrdev;
 	struct pwr_device_ina3221 *ina3221 = (struct pwr_device_ina3221*)pargs;
 
+	(void)type;
+
 	pwrdev = nvgpu_kzalloc(g, pargs_size);
 	if (pwrdev == NULL) {
 		return NULL;
@@ -281,7 +283,7 @@ static int devinit_get_pwr_device_table(struct gk20a *g,
 		}
 
 		status = boardobjgrp_objinsert(&ppwrdeviceobjs->super.super,
-				obj_tmp, obj_index);
+				obj_tmp, (u8)obj_index);
 
 		if (status != 0) {
 			nvgpu_err(g,
diff --git a/drivers/gpu/nvgpu/common/pmu/pmgr/pwrmonitor.c b/drivers/gpu/nvgpu/common/pmu/pmgr/pwrmonitor.c
index 079c2f3f7..c24c6616b 100644
--- a/drivers/gpu/nvgpu/common/pmu/pmgr/pwrmonitor.c
+++ b/drivers/gpu/nvgpu/common/pmu/pmgr/pwrmonitor.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -153,6 +153,8 @@ static struct pmu_board_obj *construct_pwr_topology(struct gk20a *g,
 	struct pwr_channel_sensor *pwrchannel;
 	struct pwr_channel_sensor *sensor = (struct pwr_channel_sensor*)pargs;
 
+	(void)type;
+
 	pwrchannel = nvgpu_kzalloc(g, pargs_size);
 	if (pwrchannel == NULL) {
 		return NULL;
@@ -298,7 +300,7 @@ static int devinit_get_pwr_topology_table(struct gk20a *g,
 		}
 
 		status = boardobjgrp_objinsert(&ppwrmonitorobjs->pwr_channels.super,
-				obj_tmp, obj_index);
+				obj_tmp, (u8)obj_index);
 
 		if (status != 0) {
 			nvgpu_err(g,
diff --git a/drivers/gpu/nvgpu/common/pmu/pmgr/pwrpolicy.c b/drivers/gpu/nvgpu/common/pmu/pmgr/pwrpolicy.c
index 357c003ca..79297c874 100644
--- a/drivers/gpu/nvgpu/common/pmu/pmgr/pwrpolicy.c
+++ b/drivers/gpu/nvgpu/common/pmu/pmgr/pwrpolicy.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -411,7 +411,7 @@ static int _pwr_policy_construct_WAR_SW_Threshold_policy(struct gk20a *g,
 	}
 
 	status = boardobjgrp_objinsert(&ppwrpolicyobjs->pwr_policies.super,
-			obj_tmp, obj_index);
+			obj_tmp, (u8)obj_index);
 
 	if (status != 0) {
 		nvgpu_err(g,
@@ -688,7 +688,7 @@ static int devinit_get_pwr_policy_table(struct gk20a *g,
 		}
 
 		status = boardobjgrp_objinsert(&ppwrpolicyobjs->pwr_policies.super,
-				obj_tmp, obj_index);
+				obj_tmp, (u8)obj_index);
 
 		if (status != 0) {
 			nvgpu_err(g,
diff --git a/drivers/gpu/nvgpu/common/pmu/pmu_debug.c b/drivers/gpu/nvgpu/common/pmu/pmu_debug.c
index eae173055..b0e3e6a4c 100644
--- a/drivers/gpu/nvgpu/common/pmu/pmu_debug.c
+++ b/drivers/gpu/nvgpu/common/pmu/pmu_debug.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2019, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -32,6 +32,8 @@ bool nvgpu_find_hex_in_string(char *strings, struct gk20a *g, u32 *hex_pos)
 {
 	u32 i = 0, j = (u32)strlen(strings);
 
+	(void)g;
+
 	for (; i < j; i++) {
 		if (strings[i] == '%') {
 			if (strings[i + 1U] == 'x' || strings[i + 1U] == 'X') {
diff --git a/drivers/gpu/nvgpu/common/pmu/pmu_mutex.c b/drivers/gpu/nvgpu/common/pmu/pmu_mutex.c
index 9d1eae140..cf897ad11 100644
--- a/drivers/gpu/nvgpu/common/pmu/pmu_mutex.c
+++ b/drivers/gpu/nvgpu/common/pmu/pmu_mutex.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -88,6 +88,8 @@ void nvgpu_pmu_mutex_sw_setup(struct gk20a *g, struct nvgpu_pmu *pmu,
 {
 	u32 i;
 
+	(void)pmu;
+
 	nvgpu_log_fn(g, " ");
 
 	for (i = 0; i < mutexes->cnt; i++) {
@@ -102,6 +104,8 @@ int nvgpu_pmu_init_mutexe(struct gk20a *g, struct nvgpu_pmu *pmu,
 	struct pmu_mutexes *mutexes;
 	int err = 0;
 
+	(void)pmu;
+
 	nvgpu_log_fn(g, " ");
 
 	if (*mutexes_p != NULL) {
@@ -136,6 +140,8 @@ exit:
 void nvgpu_pmu_mutexe_deinit(struct gk20a *g, struct nvgpu_pmu *pmu,
 	struct pmu_mutexes *mutexes)
 {
+	(void)pmu;
+
 	nvgpu_log_fn(g, " ");
 
 	if (mutexes == NULL) {
diff --git a/drivers/gpu/nvgpu/common/pmu/pmu_rtos_init.c b/drivers/gpu/nvgpu/common/pmu/pmu_rtos_init.c
index 65cf21135..983c756c2 100644
--- a/drivers/gpu/nvgpu/common/pmu/pmu_rtos_init.c
+++ b/drivers/gpu/nvgpu/common/pmu/pmu_rtos_init.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2021, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2017-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -249,7 +249,7 @@ void nvgpu_pmu_rtos_cmdline_args_init(struct gk20a *g, struct nvgpu_pmu *pmu)
 		pmu, GK20A_PMU_DMAIDX_VIRT);
 
 	pmu->fw->ops.set_cmd_line_args_cpu_freq(pmu,
-		g->ops.clk.get_rate(g, CTRL_CLK_DOMAIN_PWRCLK));
+		(u32)g->ops.clk.get_rate(g, CTRL_CLK_DOMAIN_PWRCLK));
 
 	if (pmu->fw->ops.config_cmd_line_args_super_surface != NULL) {
 		pmu->fw->ops.config_cmd_line_args_super_surface(pmu);
diff --git a/drivers/gpu/nvgpu/common/pmu/super_surface/super_surface.c b/drivers/gpu/nvgpu/common/pmu/super_surface/super_surface.c
index 1d595edee..2b802058b 100644
--- a/drivers/gpu/nvgpu/common/pmu/super_surface/super_surface.c
+++ b/drivers/gpu/nvgpu/common/pmu/super_surface/super_surface.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019-2021, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2019-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -23,6 +23,7 @@
 #include <nvgpu/pmu.h>
 #include <nvgpu/dma.h>
 #include <nvgpu/gk20a.h>
+#include <nvgpu/string.h>
 #include <nvgpu/pmu/super_surface.h>
 
 #include "super_surface_priv.h"
@@ -71,6 +72,8 @@ int nvgpu_pmu_super_surface_buf_alloc(struct gk20a *g, struct nvgpu_pmu *pmu,
 struct nvgpu_mem *nvgpu_pmu_super_surface_mem(struct gk20a *g,
 	struct nvgpu_pmu *pmu, struct nvgpu_pmu_super_surface *ss)
 {
+	(void)g;
+	(void)pmu;
 	return &ss->super_surface_buf;
 }
 
@@ -90,6 +93,8 @@ int nvgpu_pmu_ss_create_ssmd_lookup_table(struct gk20a *g,
 	u32 idx = 0U;
 	int err = 0;
 
+	(void)pmu;
+
 	nvgpu_log_fn(g, " ");
 
 	if (ss == NULL) {
@@ -154,30 +159,37 @@ int nvgpu_pmu_ss_create_ssmd_lookup_table(struct gk20a *g,
 u32 nvgpu_pmu_get_ss_member_set_offset(struct gk20a *g,
 	struct nvgpu_pmu *pmu, u32 member_id)
 {
+	(void)g;
 	return pmu->super_surface->ssmd_set[member_id].offset;
 }
 
 u32 nvgpu_pmu_get_ss_member_set_size(struct gk20a *g,
 	struct nvgpu_pmu *pmu, u32 member_id)
 {
+	(void)g;
 	return pmu->super_surface->ssmd_set[member_id].size;
 }
 
 u32 nvgpu_pmu_get_ss_member_get_status_offset(struct gk20a *g,
 	struct nvgpu_pmu *pmu, u32 member_id)
 {
+	(void)g;
 	return pmu->super_surface->ssmd_get_status[member_id].offset;
 }
 
 u32 nvgpu_pmu_get_ss_member_get_status_size(struct gk20a *g,
 	struct nvgpu_pmu *pmu, u32 member_id)
 {
+	(void)g;
 	return pmu->super_surface->ssmd_get_status[member_id].size;
 }
 
 u32 nvgpu_pmu_get_ss_cmd_fbq_offset(struct gk20a *g,
 	struct nvgpu_pmu *pmu, struct nvgpu_pmu_super_surface *ss, u32 id)
 {
+	(void)g;
+	(void)pmu;
+	(void)ss;
 	return (u32)offsetof(struct super_surface,
 			fbq.cmd_queues.queue[id]);
 }
@@ -185,6 +197,9 @@ u32 nvgpu_pmu_get_ss_cmd_fbq_offset(struct gk20a *g,
 u32 nvgpu_pmu_get_ss_msg_fbq_offset(struct gk20a *g,
 	struct nvgpu_pmu *pmu, struct nvgpu_pmu_super_surface *ss)
 {
+	(void)g;
+	(void)pmu;
+	(void)ss;
 	return (u32)offsetof(struct super_surface,
 			fbq.msg_queue);
 }
@@ -192,6 +207,9 @@ u32 nvgpu_pmu_get_ss_msg_fbq_offset(struct gk20a *g,
 u32 nvgpu_pmu_get_ss_msg_fbq_element_offset(struct gk20a *g,
 	struct nvgpu_pmu *pmu, struct nvgpu_pmu_super_surface *ss, u32 idx)
 {
+	(void)g;
+	(void)pmu;
+	(void)ss;
 	return (u32)offsetof(struct super_surface,
 		fbq.msg_queue.element[idx]);
 }
@@ -212,6 +230,8 @@ void nvgpu_pmu_ss_fbq_flush(struct gk20a *g, struct nvgpu_pmu *pmu)
 void nvgpu_pmu_super_surface_deinit(struct gk20a *g, struct nvgpu_pmu *pmu,
 	struct nvgpu_pmu_super_surface *ss)
 {
+	(void)pmu;
+
 	nvgpu_log_fn(g, " ");
 
 	if (ss == NULL) {
@@ -228,6 +248,8 @@ void nvgpu_pmu_super_surface_deinit(struct gk20a *g, struct nvgpu_pmu *pmu,
 int nvgpu_pmu_super_surface_init(struct gk20a *g, struct nvgpu_pmu *pmu,
 	struct nvgpu_pmu_super_surface **super_surface)
 {
+	(void)pmu;
+
 	if (*super_surface != NULL) {
 		/* skip alloc/reinit for unrailgate sequence */
 		return 0;
diff --git a/drivers/gpu/nvgpu/common/pmu/therm/therm_channel.c b/drivers/gpu/nvgpu/common/pmu/therm/therm_channel.c
index d959a0015..06bf46810 100644
--- a/drivers/gpu/nvgpu/common/pmu/therm/therm_channel.c
+++ b/drivers/gpu/nvgpu/common/pmu/therm/therm_channel.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -78,6 +78,8 @@ static struct pmu_board_obj *construct_channel_device(struct gk20a *g,
 	u16 scale_shift = BIT16(8);
 	struct therm_channel_device *therm_device = (struct therm_channel_device*)pargs;
 
+	(void)type;
+
 	pchannel_device = nvgpu_kzalloc(g, pargs_size);
 	if (pchannel_device == NULL) {
 		return NULL;
@@ -141,6 +143,8 @@ static int therm_channel_pmustatus_instget(struct gk20a *g,
 		(struct nv_pmu_therm_therm_channel_boardobj_grp_get_status *)
 		(void *)pboardobjgrppmu;
 
+	(void)g;
+
 	/*check whether pmuboardobjgrp has a valid boardobj in index*/
 	if (((u32)BIT(idx) &
 		pmu_status->hdr.data.super.obj_mask.super.data[0]) == 0U) {
@@ -232,7 +236,7 @@ static int devinit_get_therm_channel_table(struct gk20a *g,
 		}
 
 		status = boardobjgrp_objinsert(&pthermchannelobjs->super.super,
-				obj_tmp, obj_index);
+				obj_tmp, (u8)obj_index);
 
 		if (status != 0) {
 			nvgpu_err(g,
diff --git a/drivers/gpu/nvgpu/common/pmu/therm/therm_dev.c b/drivers/gpu/nvgpu/common/pmu/therm/therm_dev.c
index ada084023..a1df09d06 100644
--- a/drivers/gpu/nvgpu/common/pmu/therm/therm_dev.c
+++ b/drivers/gpu/nvgpu/common/pmu/therm/therm_dev.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -199,7 +199,7 @@ static int devinit_get_therm_device_table(struct gk20a *g,
 		}
 
 		status = boardobjgrp_objinsert(&pthermdeviceobjs->super.super,
-				obj_tmp, obj_index);
+				obj_tmp, (u8)obj_index);
 
 		if (status != 0) {
 			nvgpu_err(g,
diff --git a/drivers/gpu/nvgpu/common/pmu/therm/thrm.c b/drivers/gpu/nvgpu/common/pmu/therm/thrm.c
index be19e2303..9dd65daf9 100644
--- a/drivers/gpu/nvgpu/common/pmu/therm/thrm.c
+++ b/drivers/gpu/nvgpu/common/pmu/therm/thrm.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -29,6 +29,7 @@
 static void therm_unit_rpc_handler(struct gk20a *g, struct nvgpu_pmu *pmu,
 		struct nv_pmu_rpc_header *rpc)
 {
+	(void)pmu;
 	switch (rpc->function) {
 	case NV_PMU_RPC_ID_THERM_BOARD_OBJ_GRP_CMD:
 		nvgpu_pmu_dbg(g,
@@ -70,6 +71,8 @@ int nvgpu_pmu_therm_pmu_setup(struct gk20a *g, struct nvgpu_pmu *pmu)
 {
 	int status;
 
+	(void)pmu;
+
 	status = therm_device_pmu_setup(g);
 	if (status != 0) {
 		nvgpu_err(g, "Therm device pmu setup failed - 0x%x", status);
diff --git a/drivers/gpu/nvgpu/common/pmu/volt/volt.c b/drivers/gpu/nvgpu/common/pmu/volt/volt.c
index 61af6f8ff..a5f3ca2ac 100644
--- a/drivers/gpu/nvgpu/common/pmu/volt/volt.c
+++ b/drivers/gpu/nvgpu/common/pmu/volt/volt.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2020-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -22,6 +22,7 @@
 
 #include <nvgpu/pmu/volt.h>
 #include <nvgpu/gk20a.h>
+#include <nvgpu/string.h>
 #include <nvgpu/pmu/cmd.h>
 
 #include "volt.h"
diff --git a/drivers/gpu/nvgpu/common/pmu/volt/volt_dev.c b/drivers/gpu/nvgpu/common/pmu/volt/volt_dev.c
index 4e4ff75e2..809882c44 100644
--- a/drivers/gpu/nvgpu/common/pmu/volt/volt_dev.c
+++ b/drivers/gpu/nvgpu/common/pmu/volt/volt_dev.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -217,7 +217,7 @@ static int volt_get_voltage_device_table_1x_psv(struct gk20a *g,
 	u8 ext_dev_idx;
 	u8 steps;
 	u8 volt_domain = 0;
-	struct voltage_device_pwm_entry pwm_entry = { { 0 } };
+	struct voltage_device_pwm_entry pwm_entry = { };
 
 	ptmp_dev = nvgpu_kzalloc(g, sizeof(struct voltage_device_pwm));
 	if (ptmp_dev == NULL) {
diff --git a/drivers/gpu/nvgpu/common/pmu/volt/volt_rail.c b/drivers/gpu/nvgpu/common/pmu/volt/volt_rail.c
index f77fcf404..ae20fbd17 100644
--- a/drivers/gpu/nvgpu/common/pmu/volt/volt_rail.c
+++ b/drivers/gpu/nvgpu/common/pmu/volt/volt_rail.c
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2016-2020, NVIDIA CORPORATION.  All rights reserved.
+ * Copyright (c) 2016-2022, NVIDIA CORPORATION.  All rights reserved.
  *
  * Permission is hereby granted, free of charge, to any person obtaining a
  * copy of this software and associated documentation files (the "Software"),
@@ -308,6 +308,7 @@ static int volt_rail_devgrp_pmustatus_instget(struct gk20a *g,
 		(struct nv_pmu_volt_volt_rail_boardobj_grp_get_status *)
 		pboardobjgrppmu;
 
+	(void)g;
 	/*check whether pmuboardobjgrp has a valid boardobj in index*/
 	if (((u32)BIT(idx) &
 		pgrp_get_status->hdr.data.super.obj_mask.super.data[0]) == 0U) {
@@ -479,6 +480,7 @@ int volt_rail_pmu_setup(struct gk20a *g)
 u8 volt_rail_vbios_volt_domain_convert_to_internal(struct gk20a *g,
 	u8 vbios_volt_domain)
 {
+	(void)vbios_volt_domain;
 	if (g->pmu->volt->volt_metadata->volt_rail_metadata.volt_domain_hal ==
 			CTRL_VOLT_DOMAIN_HAL_GP10X_SINGLE_RAIL) {
 		return CTRL_VOLT_DOMAIN_LOGIC;
@@ -534,6 +536,7 @@ exit:
 
 u8 nvgpu_pmu_volt_rail_volt_domain_convert_to_idx(struct gk20a *g, u8 volt_domain)
 {
+	(void)volt_domain;
 	if (g->pmu->volt->volt_metadata->volt_rail_metadata.volt_domain_hal ==
 			CTRL_VOLT_DOMAIN_HAL_GP10X_SINGLE_RAIL) {
 		return 0U;