[PATCH 6.19 285/781] drm/amd/pm: Return -EOPNOTSUPP when cant read power limit

Greg Kroah-Hartman
2026-02-25T01:32:07Z

From: Timur Kristóf <timur.kristof@gmail.com>

[ Upstream commit e53dcefe30df4f317161f36e8bc11926e7dd7a2e ]

So that hwmon_attributes_visible() will see that the power2_cap
attributes should not be visible on GPUs that don't support
the get_power_limit() function.

This fixes an error when running the "sensors" command on SI.

Fixes: 12c958d1db36 ("drm/amd/pm: Expose ppt1 limit for gc_v9_5_0")
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Timur Kristóf <timur.kristof@gmail.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpu/drm/amd/pm/amdgpu_dpm.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
index 302af1fb6901e..9c9e96655c4be 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_dpm.c
@@ -1589,7 +1589,7 @@ int amdgpu_dpm_get_power_limit(struct amdgpu_device *adev,
int ret = 0;

if (!pp_funcs->get_power_limit)
- return -ENODATA;
+ return -EOPNOTSUPP;

mutex_lock(&adev->pm.mutex);
ret = pp_funcs->get_power_limit(adev->powerplay.pp_handle,
--
2.51.0