From: Yang Wang <kevinyang.wang@amd.com>
Date: Wed, 3 Sep 2025 06:29:12 +0000 (+0800)
Subject: drm/amd/pm: refine amdgpu pm sysfs node error code
X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=cf32515a70618c0fb2319bd4a855f4d9447940a8;p=users%2Fhch%2Fmisc.git

drm/amd/pm: refine amdgpu pm sysfs node error code

v1:
Returns different error codes based on the scenario to help the user app understand
the AMDGPU device status when an exception occurs.

v2:
change -NODEV to -EBUSY.

Signed-off-by: Yang Wang <kevinyang.wang@amd.com>
Reviewed-by: Lijo Lazar <lijo.lazar@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/pm/amdgpu_pm.c b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
index 5230276628a3..96590c1da553 100644
--- a/drivers/gpu/drm/amd/pm/amdgpu_pm.c
+++ b/drivers/gpu/drm/amd/pm/amdgpu_pm.c
@@ -110,9 +110,10 @@ static int amdgpu_pm_dev_state_check(struct amdgpu_device *adev, bool runpm)
 	bool runpm_check = runpm ? adev->in_runpm : false;
 
 	if (amdgpu_in_reset(adev))
-		return -EPERM;
+		return -EBUSY;
+
 	if (adev->in_suspend && !runpm_check)
-		return -EPERM;
+		return -EBUSY;
 
 	return 0;
 }