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| author | Haojie Li <lihaojie@kylinos.cn> | 2026-08-25 18:08:45 +0800 |
|---|---|---|
| committer | Chun-Kuang Hu <chunkuang.hu@kernel.org> | 2026-09-28 23:20:55 +0000 |
| commit | bce7698e2e6565bb765bd0522337f29f5f312624 (patch) | |
| tree | 0b735b7b4a27369cb4d75d9431b3ee59ce7e5bcc /include/asm-generic/bitops.h | |
| download | linux-stable-bce7698e2e6565bb765bd0522337f29f5f312624.tar.gz linux-stable-bce7698e2e6565bb765bd0522337f29f5f312624.zip | |
drm/mediatek: Add missing IS_ERR check for ovl_adaptor platform devicegrafted
platform_device_register_data() can fail and return an ERR_PTR, but the
return value is used without checking, leading to an invalid pointer
being stored in ddp_comp[].dev and passed to component_match_add() and
mtk_ddp_comp_init(), which could result in a kernel crash.
Add an IS_ERR() check to jump to the error handling path on failure.
Fixes: 0d9eee9118b7 ("drm/mediatek: Add drm ovl_adaptor sub driver for MT8195")
Cc: stable@vger.kernel.org
Signed-off-by: Haojie Li <lihaojie@kylinos.cn>
Reviewed-by: CK Hu <ck.hu@mediatek.com>
Link: https://patchwork.kernel.org/project/linux-mediatek/patch/20260825100845.438893-1-lihaojie@kylinos.cn/
Signed-off-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Diffstat (limited to 'include/asm-generic/bitops.h')
| -rw-r--r-- | include/asm-generic/bitops.h | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/include/asm-generic/bitops.h b/include/asm-generic/bitops.h new file mode 100644 index 000000000..a47b8a71d --- /dev/null +++ b/include/asm-generic/bitops.h @@ -0,0 +1,38 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef __ASM_GENERIC_BITOPS_H +#define __ASM_GENERIC_BITOPS_H + +/* + * For the benefit of those who are trying to port Linux to another + * architecture, here are some C-language equivalents. They should + * generate reasonable code, so take a look at what your compiler spits + * out before rolling your own buggy implementation in assembly language. + * + * C language equivalents written by Theodore Ts'o, 9/26/92 + */ + +#include <linux/irqflags.h> +#include <linux/compiler.h> +#include <asm/barrier.h> + +#include <asm-generic/bitops/__ffs.h> +#include <asm-generic/bitops/ffz.h> +#include <asm-generic/bitops/fls.h> +#include <asm-generic/bitops/__fls.h> +#include <asm-generic/bitops/fls64.h> + +#ifndef _LINUX_BITOPS_H +#error only <linux/bitops.h> can be included directly +#endif + +#include <asm-generic/bitops/sched.h> +#include <asm-generic/bitops/ffs.h> +#include <asm-generic/bitops/hweight.h> +#include <asm-generic/bitops/lock.h> + +#include <asm-generic/bitops/atomic.h> +#include <asm-generic/bitops/non-atomic.h> +#include <asm-generic/bitops/le.h> +#include <asm-generic/bitops/ext2-atomic.h> + +#endif /* __ASM_GENERIC_BITOPS_H */ |