[PATCH 1/4] PM: runtime: Clear runtime_error on supplier after failed get_sync

[Praveen Talari]

When pm_runtime_get_sync() fails for a supplier device in
rpm_get_suppliers(), the supplier's power.runtime_error field is left
set. This causes any subsequent rpm_resume() call on that supplier to
immediately return -EINVAL at the top of the function without
attempting an actual resume, making the failure permanent until
runtime PM is explicitly re-enabled.

Fix this by calling pm_runtime_set_suspended() on the supplier after
pm_runtime_put_noidle() in the error path. This clears runtime_error
and resets the runtime PM status to RPM_SUSPENDED, allowing the next
consumer resume attempt to retry the supplier resume normally.

Change-Id: Id5067d09caca464f663fc95fe745d037e9c56664
Signed-off-by: Praveen Talari <praveen.talari@xxxxxxxxxxxxxxxx>
---
 drivers/base/power/runtime.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/base/power/runtime.c b/drivers/base/power/runtime.c
index 335288e8b5b3..9811d024d140 100644
--- a/drivers/base/power/runtime.c
+++ b/drivers/base/power/runtime.c
@@ -309,6 +309,7 @@ static int rpm_get_suppliers(struct device *dev)
 		/* Ignore suppliers with disabled runtime PM. */
 		if (retval < 0 && retval != -EACCES) {
 			pm_runtime_put_noidle(link->supplier);
+			pm_runtime_set_suspended(link->supplier);
 			return retval;
 		}
 		refcount_inc(&link->rpm_active);

-- 
2.34.1