From f423bfcf769d59a658709aecf4a064d6ba3866f9 Mon Sep 17 00:00:00 2001
From: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Date: Wed, 5 Aug 2026 14:36:18 +0200
Subject: [PATCH] drm/amdgpu: use pm_runtime_resume_and_get for ctx ioctl
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Only amdgpu_ctx_set_stable_pstate() communicates with the hw.

v3 (Shahyan): fixed typo in commit description

Signed-off-by: Pierre-Eric Pelloux-Prayer <pierre-eric.pelloux-prayer@amd.com>
Signed-off-by: Shahyan Soltani <shahyan.soltani@amd.com>
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
 drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
index acafa8c59cc9..2f0349233695 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_ctx.c
@@ -28,6 +28,7 @@
 #include "amdgpu_sched.h"
 #include "amdgpu_ras.h"
 #include <linux/nospec.h>
+#include <linux/pm_runtime.h>
 
 #define to_amdgpu_ctx_entity(e)	\
 	container_of((e), struct amdgpu_ctx_entity, entity)
@@ -643,10 +644,15 @@ static int amdgpu_ctx_stable_pstate(struct amdgpu_device *adev,
 	 * context id.
 	 */
 
-	if (set)
+	if (set) {
+		r = pm_runtime_resume_and_get(adev->dev);
+		if (r < 0)
+			return r;
 		r = amdgpu_ctx_set_stable_pstate(ctx, *stable_pstate);
-	else
+		pm_runtime_put_autosuspend(adev->dev);
+	} else {
 		*stable_pstate = amdgpu_get_stable_pstate(adev);
+	}
 
 	amdgpu_ctx_put(ctx);
 	return r;