[PATCH 2/3] drm/xe: Allow the pm notifier to continue on failure

["Thomas Hellström" <thomas.hellstrom@linux.intel.com>]

Its actions are opportunistic anyway and will be completed
on device suspend.

Also restrict the scope of the pm runtime reference to
the notifier callback itself to make it easier to
follow.

Marking as a fix to simplify backporting of the fix
that follows in the series.

Fixes: c6a4d46ec1d7 ("drm/xe: evict user memory in PM notifier")
Cc: Matthew Auld <matthew.auld@intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: <stable@vger.kernel.org> # v6.16+
Signed-off-by: Thomas Hellström <thomas.hellstrom@linux.intel.com>
---
 drivers/gpu/drm/xe/xe_pm.c | 14 ++++----------
 1 file changed, 4 insertions(+), 10 deletions(-)

diff --git a/drivers/gpu/drm/xe/xe_pm.c b/drivers/gpu/drm/xe/xe_pm.c
index a2e85030b7f4..b57b46ad9f7c 100644
--- a/drivers/gpu/drm/xe/xe_pm.c
+++ b/drivers/gpu/drm/xe/xe_pm.c
@@ -308,28 +308,22 @@ static int xe_pm_notifier_callback(struct notifier_block *nb,
 	case PM_SUSPEND_PREPARE:
 		xe_pm_runtime_get(xe);
 		err = xe_bo_evict_all_user(xe);
-		if (err) {
+		if (err)
 			drm_dbg(&xe->drm, "Notifier evict user failed (%d)\n", err);
-			xe_pm_runtime_put(xe);
-			break;
-		}
 
 		err = xe_bo_notifier_prepare_all_pinned(xe);
-		if (err) {
+		if (err)
 			drm_dbg(&xe->drm, "Notifier prepare pin failed (%d)\n", err);
-			xe_pm_runtime_put(xe);
-		}
+		xe_pm_runtime_put(xe);
 		break;
 	case PM_POST_HIBERNATION:
 	case PM_POST_SUSPEND:
+		xe_pm_runtime_get(xe);
 		xe_bo_notifier_unprepare_all_pinned(xe);
 		xe_pm_runtime_put(xe);
 		break;
 	}
 
-	if (err)
-		return NOTIFY_BAD;
-
 	return NOTIFY_DONE;
 }
 
-- 
2.50.1