diff options
| author | Zhang Shurong <[email protected]> | 2023-07-15 22:13:38 +0800 |
|---|---|---|
| committer | Neil Armstrong <[email protected]> | 2023-08-04 15:19:01 +0200 |
| commit | f2ed165619c16577c02b703a114a1f6b52026df4 (patch) | |
| tree | 41c43d24a5dfb30c6cbfc24661e435406419c8c6 | |
| parent | 584ed6d4afca4824f3bf18e588cc0cb555278bff (diff) | |
firmware: meson_sm: fix to avoid potential NULL pointer dereference
of_match_device() may fail and returns a NULL pointer.
Fix this by checking the return value of of_match_device.
Fixes: 8cde3c2153e8 ("firmware: meson_sm: Rework driver as a proper platform driver")
Signed-off-by: Zhang Shurong <[email protected]>
Reviewed-by: Neil Armstrong <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Neil Armstrong <[email protected]>
| -rw-r--r-- | drivers/firmware/meson/meson_sm.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/firmware/meson/meson_sm.c b/drivers/firmware/meson/meson_sm.c index 798bcdb05d84..9a2656d73600 100644 --- a/drivers/firmware/meson/meson_sm.c +++ b/drivers/firmware/meson/meson_sm.c @@ -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, |