From: Arnd Bergmann <arnd@arndb.de> stable inclusion from stable-v6.6.33 commit 1f428149492fbbba125378227effacba3b15c5a1 category: bugfix bugzilla: https://gitee.com/openeuler/kernel/issues/IAD6H2 Reference: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id=... -------------------------------- [ Upstream commit cf770af5645a41a753c55a053fa1237105b0964a ] dmi_class uses kfree() as the .release function, but that now causes a warning with clang-16 as it violates control flow integrity (KCFI) rules: drivers/firmware/dmi-id.c:174:17: error: cast from 'void (*)(const void *)' to 'void (*)(struct device *)' converts to incompatible function type [-Werror,-Wcast-function-type-strict] 174 | .dev_release = (void(*)(struct device *)) kfree, Add an explicit function to call kfree() instead. Fixes: 4f5c791a850e ("DMI-based module autoloading") Link: https://lore.kernel.org/lkml/20240213100238.456912-1-arnd@kernel.org/ Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Jean Delvare <jdelvare@suse.de> Signed-off-by: Sasha Levin <sashal@kernel.org> Signed-off-by: Wang Hai <wanghai38@huawei.com> --- drivers/firmware/dmi-id.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/firmware/dmi-id.c b/drivers/firmware/dmi-id.c index 5f3a3e913d28..d19c78a78ae3 100644 --- a/drivers/firmware/dmi-id.c +++ b/drivers/firmware/dmi-id.c @@ -169,9 +169,14 @@ static int dmi_dev_uevent(const struct device *dev, struct kobj_uevent_env *env) return 0; } +static void dmi_dev_release(struct device *dev) +{ + kfree(dev); +} + static struct class dmi_class = { .name = "dmi", - .dev_release = (void(*)(struct device *)) kfree, + .dev_release = dmi_dev_release, .dev_uevent = dmi_dev_uevent, }; -- 2.17.1