diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2022-01-27 12:17:23 -0500 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2022-01-27 15:50:03 -0500 |
| commit | e281d5940ae7f2ceff99d5e001a69b5f0884d2f0 (patch) | |
| tree | efafddada5a7a4374b402460c5d7779bbec56c0c /drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c | |
| parent | 3ed893396b0132fa5a4d3fe3f9ba358678c6dba3 (diff) | |
drm/amdgpu/swsmu/i2c: return an error if the SMU is not running
Return an error if someone tries to use the i2c bus when the
SMU is not running. Otherwise we can end up sending commands
to the SMU which will either get ignored or could cause other
issues depending on what state the GPU and SMU are in.
Cc: Luben.Tuikov@amd.com
Reviewed-by: Luben Tuikov <luben.tuikov@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c')
| -rw-r--r-- | drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c index 16a5d4d35981..4a86520d01c3 100644 --- a/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c +++ b/drivers/gpu/drm/amd/pm/swsmu/smu11/navi10_ppt.c @@ -2754,6 +2754,9 @@ static int navi10_i2c_xfer(struct i2c_adapter *i2c_adap, int i, j, r, c; u16 dir; + if (!adev->pm.dpm_enabled) + return -EBUSY; + req = kzalloc(sizeof(*req), GFP_KERNEL); if (!req) return -ENOMEM; |