Deepak Nibade d9854e4782 gpu: nvgpu: jump to fail path if pm_runtime_get_sync() fails ...

Currently we execute pm_runtime_get_sync() and then
gk20a_scale_notify_busy() without checking return value of
pm_runtime_get_sync()

In case of shutdown of GPU is already initiate, we get
a hard hang due to this as per below sequence :
- one thread invokes GPU shutdown and then forcibly rail
  gates the GPU
- another thread (unaware of shutdown) calls gk20a_busy()
- since runtime PM is disabled in shutdown path,
  pm_runtime_get_sync() fails
- but we still go on running gk20a_scale_notify_busy() which
  tries to access some GPU registers and hangs

Fix this by jumping to failure path in case
pm_runtime_get_sync() fails

Bug 200099940

Change-Id: I022f2dfa9408f640fb44e6f4b10a437688779c0a
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/738509
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Tested-by: Terje Bergstrom <tbergstrom@nvidia.com>

2015-05-18 11:33:38 +05:30

..

as_gk20a.c

gpu: nvgpu: Implement compbits mapping

2015-05-18 11:33:19 +05:30

as_gk20a.h

gpu: nvgpu: Implement 64k large page support

2015-03-18 12:11:46 -07:00

cde_gk20a.c

gpu: nvgpu: Use common allocator for compbit store

2015-04-04 19:01:53 -07:00

cde_gk20a.h

gpu: nvgpu: Implement common allocator and mem_desc

2015-04-04 18:59:26 -07:00

ce2_gk20a.c

gpu: nvgpu: disable ce2 interrupts when unhandled

2015-04-04 18:08:17 -07:00

ce2_gk20a.h

gpu: nvgpu: disable ce2 interrupts when unhandled

2015-04-04 18:08:17 -07:00

channel_gk20a.c

gpu: nvgpu: check sync existence in channel update

2015-05-18 11:31:39 +05:30

channel_gk20a.h

gpu: nvgpu: Implement common allocator and mem_desc

2015-04-04 18:59:26 -07:00

channel_sync_gk20a.c

gpu: nvgpu: Reconfigure instance block with syncpt

2015-05-05 13:55:35 -07:00

channel_sync_gk20a.h

gpu: nvgpu: Reconfigure instance block with syncpt

2015-05-05 13:55:35 -07:00

clk_gk20a.c

gpu: nvgpu: Combine delays with GK20A parameters

2015-05-18 11:31:55 +05:30

clk_gk20a.h

gpu: nvgpu: Combine delays with GK20A parameters

2015-05-18 11:31:55 +05:30

ctrl_gk20a.c

gpu: nvgpu: Power up GPU in CDE only when converting

2015-05-18 11:19:43 +05:30

ctrl_gk20a.h

gpu: nvgpu: rename gpu ioctls and structs to nvgpu

2015-03-18 12:11:33 -07:00

dbg_gpu_gk20a.c

gpu: nvgpu: Implement common allocator and mem_desc

2015-04-04 18:59:26 -07:00

dbg_gpu_gk20a.h

gpu: nvgpu: rename gpu ioctls and structs to nvgpu

2015-03-18 12:11:33 -07:00

debug_gk20a.c

gpu: nvgpu: Skip debug dump on stuck syncpoint

2015-04-04 19:01:35 -07:00

debug_gk20a.h

gpu: nvgpu: APIs to dump GR status

2015-04-04 18:07:03 -07:00

fb_gk20a.c

gpu: nvgpu: Per-SoC compressible page size

2015-04-04 19:17:37 -07:00

fb_gk20a.h

gpu: nvgpu: rename gpu ioctls and structs to nvgpu

2015-03-18 12:11:33 -07:00

fence_gk20a.c

gpu: nvgpu: Infinite syncpt wait on presilicon

2015-04-04 19:00:45 -07:00

fence_gk20a.h

gpu: nvgpu: Add gk20a_fence type

2015-03-18 12:10:40 -07:00

fifo_gk20a.c

gpu: nvgpu: fix invalid "reset initiated" prints

2015-04-04 19:02:55 -07:00

fifo_gk20a.h

gpu: nvgpu: Implement common allocator and mem_desc

2015-04-04 18:59:26 -07:00

gk20a_allocator.c

gpu: nvgpu: fix compile error with ALLOCATOR_DEBUG

2015-05-18 11:19:37 +05:30

gk20a_allocator.h

Revert "gpu: nvgpu: New allocator for VA space"

2015-05-12 02:46:39 -07:00

gk20a_gating_reglist.c

gpu: nvgpu: fix sparse warnings

2015-03-18 12:12:01 -07:00

gk20a_gating_reglist.h

gpu: nvgpu: gm20b: Regenerate clock gating lists

2015-03-18 12:11:09 -07:00

gk20a_scale.c

gpu: nvgpu: 3d.emc frequency scaling

2015-04-04 19:00:15 -07:00

gk20a_scale.h

gpu: nvgpu: add gk20a_scale_exit()

2015-03-18 12:12:22 -07:00

gk20a_sysfs.c

gpu: nvgpu: return error if GPU not initialized

2015-05-18 11:19:27 +05:30

gk20a.c

gpu: nvgpu: jump to fail path if pm_runtime_get_sync() fails

2015-05-18 11:33:38 +05:30

gk20a.h

gpu: nvgpu: Dynamic betacb size

2015-05-18 11:32:40 +05:30

gr_ctx_gk20a_sim.c

gpu: nvgpu: Add NVIDIA GPU Driver

2015-03-18 12:08:53 -07:00

gr_ctx_gk20a.c

gpu: nvgpu: fix sparse warnings

2015-03-18 12:12:01 -07:00

gr_ctx_gk20a.h

video: tegra: host: flexible to select fw per chip

2015-03-18 12:08:54 -07:00

gr_gk20a.c

gpu: nvgpu: Dynamic betacb size

2015-05-18 11:32:40 +05:30

gr_gk20a.h

gpu: nvgpu: Dynamic betacb size

2015-05-18 11:32:40 +05:30

gr_pri_gk20a.h

gpu: nvgpu: gm20b: halify tpc lookup

2015-03-18 12:11:57 -07:00

hal_gk20a.c

gpu: nvgpu: disable ce2 interrupts when unhandled

2015-04-04 18:08:17 -07:00

hal_gk20a.h

gpu: nvgpu: Add class numbers to characteristics

2015-03-18 12:12:06 -07:00

hal.c

gpu: nvgpu: Add class numbers to characteristics

2015-03-18 12:12:06 -07:00

hal.h

gpu: nvgpu: Add NVIDIA GPU Driver

2015-03-18 12:08:53 -07:00

hw_bus_gk20a.h

gpu: nvgpu: Update gk20a and gm20b headers

2015-04-04 18:03:11 -07:00

hw_ccsr_gk20a.h

gpu: nvgpu: Add NVIDIA GPU Driver

2015-03-18 12:08:53 -07:00

hw_ce2_gk20a.h

gpu: nvgpu: enable ce2 interrupts

2015-04-04 18:02:35 -07:00

hw_ctxsw_prog_gk20a.h

gpu: sysfs mode for allowing access to registers

2015-03-18 12:10:49 -07:00

hw_fb_gk20a.h

gpu: nvgpu: Removal of regops from CUDA driver

2015-04-04 18:58:04 -07:00

hw_fifo_gk20a.h

gpu: nvgpu: More robust recovery

2015-04-04 18:06:37 -07:00

hw_flush_gk20a.h

gpu: nvgpu: Add NVIDIA GPU Driver

2015-03-18 12:08:53 -07:00

hw_gmmu_gk20a.h

gpu: nvgpu: Sync gk20a and gm20b headers

2015-03-18 12:11:52 -07:00

hw_gr_gk20a.h

gpu: nvgpu: Catch DS exception

2015-04-04 19:01:35 -07:00

hw_ltc_gk20a.h

gpu: nvgpu: Sync gk20a and gm20b headers

2015-03-18 12:11:52 -07:00

hw_mc_gk20a.h

gpu: nvgpu: Ensure memory subsystem is enabled

2015-04-04 18:08:03 -07:00

hw_pbdma_gk20a.h

gpu: nvgpu: Increase PBDMA timeout

2015-03-18 12:10:52 -07:00

hw_perf_gk20a.h

gpu: nvgpu: add hw perfmon buffer mapping ioctls

2015-04-04 18:08:02 -07:00

hw_pri_ringmaster_gk20a.h

gpu: nvgpu: Add NVIDIA GPU Driver

2015-03-18 12:08:53 -07:00

hw_pri_ringstation_fbp_gk20a.h

gpu: nvgpu: Add NVIDIA GPU Driver

2015-03-18 12:08:53 -07:00

hw_pri_ringstation_gpc_gk20a.h

gpu: nvgpu: Add NVIDIA GPU Driver

2015-03-18 12:08:53 -07:00

hw_pri_ringstation_sys_gk20a.h

gpu: nvgpu: Add NVIDIA GPU Driver

2015-03-18 12:08:53 -07:00

hw_proj_gk20a.h

gpu: nvgpu: Add NVIDIA GPU Driver

2015-03-18 12:08:53 -07:00

hw_pwr_gk20a.h

gpu: nvgpu: Sync gk20a and gm20b headers

2015-03-18 12:11:52 -07:00

hw_ram_gk20a.h

gpu: nvgpu: Sync gk20a and gm20b headers

2015-03-18 12:11:52 -07:00

hw_sim_gk20a.h

gpu: nvgpu: Add NVIDIA GPU Driver

2015-03-18 12:08:53 -07:00

hw_therm_gk20a.h

gpu: nvgpu: Sync gk20a and gm20b headers

2015-03-18 12:11:52 -07:00

hw_timer_gk20a.h

gpu: nvgpu: Add NVIDIA GPU Driver

2015-03-18 12:08:53 -07:00

hw_top_gk20a.h

gpu: nvgpu: Gpu characterstics enhancement

2015-04-04 18:58:05 -07:00

hw_trim_gk20a.h

gpu: nvgpu: Sync gk20a and gm20b headers

2015-03-18 12:11:52 -07:00

kind_gk20a.c

gpu: nvgpu: Use noinline_for_stack to avoid GCOV build break

2015-03-18 12:10:41 -07:00

kind_gk20a.h

gpu: nvgpu: Add NVIDIA GPU Driver

2015-03-18 12:08:53 -07:00

ltc_common.c

gpu: nvgpu: add platform specific get_iova_addr()

2015-04-04 19:02:17 -07:00

ltc_gk20a.c

gpu: nvgpu: fix return code in *_ltc_cbc_ctrl()

2015-05-18 11:18:54 +05:30

ltc_gk20a.h

gpu: nvgpu: Add class numbers to characteristics

2015-03-18 12:12:06 -07:00

mc_gk20a.c

gpu: nvgpu: Add priv ring error spew

2015-04-04 19:02:58 -07:00

mc_gk20a.h

gpu: nvgpu: Allow enabling/disabling MC interrupt

2015-03-18 12:12:31 -07:00

mm_gk20a.c

gpu: nvgpu: use vzalloc for mm entries

2015-05-18 11:33:31 +05:30

mm_gk20a.h

gpu: nvgpu: protect missing sgl in gk20a_mem_phys

2015-05-18 11:33:27 +05:30

platform_gk20a_generic.c

gpu: nvgpu: Add DT support for gpu power-domain

2015-04-04 18:57:41 -07:00

platform_gk20a_tegra.c

gpu: nvgpu: tegra gpu to emc frequency mapping

2015-05-18 11:32:41 +05:30

platform_gk20a.h

gpu: nvgpu: SMMU bypass

2015-05-05 13:59:01 -07:00

platform_vgpu_tegra.c

gpu: nvgpu: vgpu: init vm->gmmu_page_sizes

2015-03-18 12:11:59 -07:00

pmu_gk20a.c

gpu: nvgpu: updated gpmu interface data struct.

2015-05-18 11:31:38 +05:30

pmu_gk20a.h

gpu: nvgpu: updated gpmu interface data struct.

2015-05-18 11:31:38 +05:30

priv_ring_gk20a.c

Revert "gpu: nvgpu: Skip reg read of gpc2clk"

2015-05-18 11:19:43 +05:30

priv_ring_gk20a.h

gpu: nvgpu: Add NVIDIA GPU Driver

2015-03-18 12:08:53 -07:00

regops_gk20a.c

gpu: nvgpu: ioctl for flushing GPU L2

2015-04-04 18:08:16 -07:00

regops_gk20a.h

gpu: nvgpu: create new nvgpu ioctl header

2015-03-18 12:11:33 -07:00

semaphore_gk20a.c

Revert "gpu: nvgpu: New allocator for VA space"

2015-05-12 02:46:39 -07:00

semaphore_gk20a.h

gpu: nvgpu: rename gpu ioctls and structs to nvgpu

2015-03-18 12:11:33 -07:00

sim_gk20a.h

gpu: nvgpu: Add NVIDIA GPU Driver

2015-03-18 12:08:53 -07:00

sync_gk20a.c

sync: Support timestamp passing

2015-04-04 18:57:49 -07:00

sync_gk20a.h

gpu: nvgpu: Add gk20a_fence type

2015-03-18 12:10:40 -07:00

therm_gk20a.c

gpu: nvgpu: Sync gk20a and gm20b headers

2015-03-18 12:11:52 -07:00

therm_gk20a.h

gpu: nvgpu: rename gpu ioctls and structs to nvgpu

2015-03-18 12:11:33 -07:00

tsg_gk20a.c

gpu: nvgpu: Submit coverity fixes

2015-03-18 12:12:25 -07:00

tsg_gk20a.h

gpu: nvgpu: Add ioctl to create new TSG

2015-03-18 12:11:50 -07:00