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drivers: Fix bus->match for Linux v6.11

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In Linux v6.11, the 'bus_type' structure match() callback was updated to
make its 'drv' argument constant. Add a conftest test to detect this and
update the relevant drivers according to fix building them for Linux
v6.11.

Bug 4749580

Change-Id: I895d97241a7357074bb34b8e7a5bdfa2e31d5ca5
Signed-off-by: Jon Hunter <jonathanh@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3183068
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
This commit is contained in:
Jon Hunter
2024-07-12 18:08:31 +01:00
committed by mobile promotions
parent 19c93284bd
commit fc171fe539
5 changed files with 39 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpu/host1x/bus.c
View File

@@ -335,7 +335,11 @@ static int host1x_del_client(struct host1x *host1x,
return -ENODEV;
}
#if defined(NV_BUS_TYPE_STRUCT_MATCH_HAS_CONST_DRV_ARG)
static int host1x_device_match(struct device *dev, const struct device_driver *drv)
#else
static int host1x_device_match(struct device *dev, struct device_driver *drv)
#endif
{
return strstr(dev_name(dev), drv->name) != NULL;
}

8
drivers/platform/tegra/rtcpu/ivc-bus.c
View File

@@ -1,5 +1,5 @@
// SPDX-License-Identifier: GPL-2.0
// Copyright (c) 2022-2023, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
// SPDX-License-Identifier: GPL-2.0-only
// SPDX-FileCopyrightText: Copyright (c) 2022-2024 NVIDIA CORPORATION & AFFILIATES. All rights reserved.
#include <nvidia/conftest.h>
@@ -295,7 +295,11 @@ static void tegra_ivc_bus_release(struct device *dev)
kfree(bus);
}
#if defined(NV_BUS_TYPE_STRUCT_MATCH_HAS_CONST_DRV_ARG)
static int tegra_ivc_bus_match(struct device *dev, const struct device_driver *drv)
#else
static int tegra_ivc_bus_match(struct device *dev, struct device_driver *drv)
#endif
{
struct tegra_ivc_driver *ivcdrv = to_tegra_ivc_driver(drv);

13
include/linux/tegra-ivc-bus.h
View File

@@ -1,11 +1,11 @@
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (c) 2022, NVIDIA CORPORATION & AFFILIATES. All rights reserved.
*/
/* SPDX-FileCopyrightText: Copyright (c) 2020-2024 NVIDIA CORPORATION & AFFILIATES. All Rights Reserved. */
#ifndef _LINUX_TEGRA_IVC_BUS_H
#define _LINUX_TEGRA_IVC_BUS_H
#include <nvidia/conftest.h>
#include <soc/tegra/ivc-priv.h>
#include <linux/types.h>
#include <linux/tegra-hsp-combo.h>
@@ -32,8 +32,11 @@ struct tegra_ivc_driver {
} ops;
};
static inline struct tegra_ivc_driver *to_tegra_ivc_driver(
struct device_driver *drv)
#if defined(NV_BUS_TYPE_STRUCT_MATCH_HAS_CONST_DRV_ARG)
static inline struct tegra_ivc_driver *to_tegra_ivc_driver(const struct device_driver *drv)
#else
static inline struct tegra_ivc_driver *to_tegra_ivc_driver(struct device_driver *drv)
#endif
{
if (drv == NULL)
return NULL;

1
scripts/conftest/Makefile
View File

@@ -97,6 +97,7 @@ NV_CONFTEST_FUNCTION_COMPILE_TESTS += blk_mq_destroy_queue
NV_CONFTEST_FUNCTION_COMPILE_TESTS += blk_queue_max_hw_sectors
NV_CONFTEST_FUNCTION_COMPILE_TESTS += block_device_operations_open_has_gendisk_arg
NV_CONFTEST_FUNCTION_COMPILE_TESTS += block_device_operations_release_has_no_mode_arg
NV_CONFTEST_FUNCTION_COMPILE_TESTS += bus_type_struct_match_has_const_drv_arg
NV_CONFTEST_FUNCTION_COMPILE_TESTS += bus_type_struct_remove_has_int_return_type
NV_CONFTEST_FUNCTION_COMPILE_TESTS += bus_type_struct_uevent_has_const_dev_arg
NV_CONFTEST_FUNCTION_COMPILE_TESTS += class_attribute_struct_has_const_struct_class_attribute

20
scripts/conftest/conftest.sh
View File

@@ -6662,6 +6662,26 @@ compile_test() {
"NV_BLOCK_DEVICE_OPERATIONS_RELEASE_HAS_NO_MODE_ARG" "" "types"
;;
bus_type_struct_match_has_const_drv_arg)
#
# Determine if the 'match' callback from the 'bus_type' structure
# has a const 'struct device_driver' argument.
#
# Commit d69d80484598 ("driver core: have match() callback in struct
# bus_type take a const *") updated the match() function for the
# 'bus_type' structure to take a constant 'drv' argument.
#
CODE="
#include <linux/device/bus.h>
int conftest_bus_type_struct_match_has_const_drv_arg(struct device *dev,
const struct device_driver *drv,
struct bus_type *bus) {
return bus->match(dev, drv);
}"
compile_check_conftest "$CODE" "NV_BUS_TYPE_STRUCT_MATCH_HAS_CONST_DRV_ARG" "" "types"
;;
bus_type_struct_remove_has_int_return_type)
#
# Determine if the 'remove' callback from the 'bus_type' structure