[Intel-xe] [PATCH 1/2] drm/xe/pm: Wrap pm_runtime_suspended with power.lock

[Anshuman Gupta]

pm_runtime_suspended() doc has requirement to use it with
PM lock of @dev to get the trusted value.
Wrap pm_runtime_suspended within xe_pm_runtime_suspended()
with proper locking.

Signed-off-by: Anshuman Gupta <anshuman.gupta at intel.com>
---
 drivers/gpu/drm/xe/xe_pm.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_pm.c b/drivers/gpu/drm/xe/xe_pm.c
index b7b57f10ba25..04c5353ba870 100644
--- a/drivers/gpu/drm/xe/xe_pm.c
+++ b/drivers/gpu/drm/xe/xe_pm.c
@@ -210,11 +210,23 @@ int xe_pm_runtime_put(struct xe_device *xe)
 	return pm_runtime_put_autosuspend(xe->drm.dev);
 }
 
+static bool xe_pm_runtime_suspended(struct xe_device *xe)
+{
+	unsigned long flags;
+	bool suspended;
+
+	spin_lock_irqsave(&xe->drm.dev->power.lock, flags);
+	suspended = pm_runtime_suspended(xe->drm.dev);
+	spin_unlock_irqrestore(&xe->drm.dev->power.lock, flags);
+
+	return suspended;
+}
+
 /* Return true if resume operation happened and usage count was increased */
 bool xe_pm_runtime_resume_if_suspended(struct xe_device *xe)
 {
 	/* In case we are suspended we need to immediately wake up */
-	if (pm_runtime_suspended(xe->drm.dev))
+	if (xe_pm_runtime_suspended(xe))
 		return !pm_runtime_resume_and_get(xe->drm.dev);
 
 	return false;
@@ -222,6 +234,6 @@ bool xe_pm_runtime_resume_if_suspended(struct xe_device *xe)
 
 int xe_pm_runtime_get_if_active(struct xe_device *xe)
 {
-	WARN_ON(pm_runtime_suspended(xe->drm.dev));
+	WARN_ON(xe_pm_runtime_suspended(xe));
 	return pm_runtime_get_if_active(xe->drm.dev, true);
 }
-- 
2.38.0