linux-dev/drivers/platform/loongarch, branch masterLinux kernel development work - see feature brancheshttps://git.zx2c4.com/linux-dev/atom/drivers/platform/loongarch?h=master2022-10-29T08:29:31Zplatform/loongarch: laptop: Fix possible UAF and simplify generic_acpi_laptop_init()2022-10-29T08:29:31ZYang Yingliangyangyingliang@huawei.com2022-10-29T08:29:31Zurn:sha1:d81916910f7498fe7a768697e0101d488f9fe665
Currently the return value of 'sub_driver->init' is not checked. If
sparse_keymap_setup() called in the init function fails, 'generic_
inputdev' is freed, then it will lead a UAF when using it in generic_
acpi_laptop_init(). Fix it by checking the return value and setting
generic_inputdev to NULL after free, so as to avoid double free it.
The error code in generic_subdriver_init() is always negative, so the
return of generic_subdriver_init() can be simplified.
Fixes: 6246ed09111f ("LoongArch: Add ACPI-based generic laptop driver")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
platform/loongarch: laptop: Adjust resume order for loongson_hotkey_resume()2022-10-29T08:29:31ZHuacai Chenchenhuacai@loongson.cn2022-10-29T08:29:31Zurn:sha1:fbe605ab157b174385b3f19ce33928d3548a9b09
Some laptops don't support SW_LID, but still have backlight control,
move backlight resuming before SW_LID event handling so as to avoid
backlight mistake due to early return.
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>
LoongArch: Add ACPI-based generic laptop driver2022-10-12T08:36:20ZJianmin Lvlvjianmin@loongson.cn2022-10-12T08:36:20Zurn:sha1:6246ed09111fbb17168619006b4380103c6673c3
This add ACPI-based generic laptop driver for Loongson-3. Some of the
codes are derived from drivers/platform/x86/thinkpad_acpi.c.
Signed-off-by: Jianmin Lv <lvjianmin@loongson.cn>
Signed-off-by: Huacai Chen <chenhuacai@loongson.cn>