diff options
| author | Jonathan Gray <jsg@cvs.openbsd.org> | 2023-11-30 02:57:54 +0000 |
|---|---|---|
| committer | Jonathan Gray <jsg@cvs.openbsd.org> | 2023-11-30 02:57:54 +0000 |
| commit | 058206f7d1ca327a9f61dad57b64fa61c818ae8e (patch) | |
| tree | 5dcfcb4f7aaf8bedb6c8d0ab1300a9aa845903d7 | |
| parent | d55f2269a773080fd4b3e5e10e929e62051f258d (diff) | |
drm/amd/display: fix a NULL pointer dereference in amdgpu_dm_i2c_xfer()
From Mario Limonciello
fb5c134ca589fe670430acc9e7ebf2691ca2476d in linux-6.1.y/6.1.64
b71f4ade1b8900d30c661d6c27f87c35214c398c in mainline linux
| -rw-r--r-- | sys/dev/pci/drm/amd/display/amdgpu_dm/amdgpu_dm.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/dev/pci/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/sys/dev/pci/drm/amd/display/amdgpu_dm/amdgpu_dm.c index 64a9b954d92..09815d3d365 100644 --- a/sys/dev/pci/drm/amd/display/amdgpu_dm/amdgpu_dm.c +++ b/sys/dev/pci/drm/amd/display/amdgpu_dm/amdgpu_dm.c @@ -7221,6 +7221,9 @@ static int amdgpu_dm_i2c_xfer(struct i2c_adapter *i2c_adap, int i; int result = -EIO; + if (!ddc_service->ddc_pin || !ddc_service->ddc_pin->hw_info.hw_supported) + return result; + cmd.payloads = kcalloc(num, sizeof(struct i2c_payload), GFP_KERNEL); if (!cmd.payloads) |