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tegra_hv: Use conftest to find if class_attribute function has const type arg

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Determine if struct class_attribute function has const type
"struct class_attribute" argument or not.

Modified the argument by change
commit 75a2d4226b5371 ("driver core: class: mark the struct class
for sysfs callbacks as constant") for Linux 6.3

Bug 4346767

Change-Id: I2a36025b23af80761faf1da406481731289eedd2
Signed-off-by: Laxman Dewangan <ldewangan@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3030734
(cherry picked from commit de4295cfa6)
Reviewed-on: https://git-master.nvidia.com/r/c/linux-nv-oot/+/3059278
Tested-by: Jonathan Hunter <jonathanh@nvidia.com>
Reviewed-by: Jonathan Hunter <jonathanh@nvidia.com>
GVS: Gerrit_Virtual_Submit <buildbot_gerritrpt@nvidia.com>
This commit is contained in:
Laxman Dewangan
2023-12-08 06:37:09 +00:00
committed by mobile promotions
parent e997e8ae5a
commit 176a1bff8d
4 changed files with 22 additions and 10 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
Makefile
View File

@@ -7,15 +7,6 @@ LINUXINCLUDE += -I$(srctree.nvidia-oot)/include
subdir-ccflags-y += -Werror
subdir-ccflags-y += -Wmissing-prototypes
LINUX_VERSION := $(shell expr $(VERSION) \* 256 + $(PATCHLEVEL))
LINUX_VERSION_6_4 := $(shell expr 6 \* 256 + 4)
# Changes done in Linux 6.4 onwards
ifeq ($(shell test $(LINUX_VERSION) -ge $(LINUX_VERSION_6_4); echo $$?),0)
# Argument on class attribute callback changed to constant type
subdir-ccflags-y += -DNV_CLASS_ATTRIBUTE_STRUCT_HAS_CONST_STRUCT_CLASS_ARG
endif
ifeq ($(CONFIG_TEGRA_VIRTUALIZATION),y)
subdir-ccflags-y += -DCONFIG_TEGRA_VIRTUALIZATION
endif

2
drivers/virt/tegra/tegra_hv.c
View File

@@ -416,7 +416,7 @@ static void tegra_hv_cleanup(struct tegra_hv_data *hvd)
}
}
#if defined(NV_CLASS_ATTRIBUTE_STRUCT_HAS_CONST_STRUCT_CLASS_ARG)
#if defined(NV_CLASS_ATTRIBUTE_STRUCT_HAS_CONST_STRUCT_CLASS_ATTRIBUTE_ARG)
static ssize_t vmid_show(const struct class *class,
const struct class_attribute *attr, char *buf)
#else

1
scripts/conftest/Makefile
View File

@@ -96,6 +96,7 @@ NV_CONFTEST_FUNCTION_COMPILE_TESTS += block_device_operations_open_has_gendisk_a
NV_CONFTEST_FUNCTION_COMPILE_TESTS += block_device_operations_release_has_no_mode_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
NV_CONFTEST_FUNCTION_COMPILE_TESTS += class_create_has_no_owner_arg
NV_CONFTEST_FUNCTION_COMPILE_TESTS += class_struct_devnode_has_const_dev_arg
NV_CONFTEST_FUNCTION_COMPILE_TESTS += define_semaphore_has_number_arg

20
scripts/conftest/conftest.sh
View File

@@ -6604,6 +6604,26 @@ compile_test() {
compile_check_conftest "$CODE" "NV_BUS_TYPE_STRUCT_UEVENT_HAS_CONST_DEV_ARG" "" "types"
;;
class_attribute_struct_has_const_struct_class_attribute)
#
# Determine if struct class_attribute function has const type "struct class_attribute"
# argument or not.
#
# Modified the argument by change commit 75a2d4226b5371 ("driver core: class: mark
# the struct class for sysfs callbacks as constant") for Linux 6.3
#
CODE="
#include <linux/device/class.h>
static ssize_t show_cb(struct class *class, struct class_attribute *attr, char *buf) {
return 0;
}
static struct class_attribute ca = {
.show = show_cb,
};"
compile_check_conftest "$CODE" "NV_CLASS_ATTRIBUTE_STRUCT_HAS_CONST_STRUCT_CLASS_ATTRIBUTE_ARG" "" "functions"
;;
class_create_has_no_owner_arg)
#
# Determine if the class_create() function has the 'owner' argument.