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-rw-r--r--sys/dev/pci/drm/amd/display/amdgpu_dm/amdgpu_dm.c3
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)