android/android_kernel_samsung_sm8650
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

firmware: meson_sm: fix to avoid potential NULL pointer dereference

Browse Source 
[ Upstream commit f2ed165619c16577c02b703a114a1f6b52026df4 ]

of_match_device() may fail and returns a NULL pointer.

Fix this by checking the return value of of_match_device.

Fixes: 8cde3c2153 ("firmware: meson_sm: Rework driver as a proper platform driver")
Signed-off-by: Zhang Shurong <zhang_shurong@foxmail.com>
Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/tencent_AA08AAA6C4F34D53ADCE962E188A879B8206@qq.com
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Zhang Shurong 2023-07-15 22:13:38 +08:00 committed by Greg Kroah-Hartman
parent 2965015006
commit bd3a6b6d5d
1 changed files with 2 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
drivers/firmware/meson/meson_sm.c
View File

@ -292,6 +292,8 @@ static int __init meson_sm_probe(struct platform_device *pdev)
return -ENOMEM;
chip = of_match_device(meson_sm_ids, dev)->data;
if (!chip)
return -EINVAL;
if (chip->cmd_shmem_in_base) {
fw->sm_shmem_in_base = meson_sm_map_shmem(chip->cmd_shmem_in_base,