[PATCH 5.15 244/484] remoteproc: stm32_rproc: Fix mailbox interrupts queuing

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5.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Gwenael Treuveur <gwenael.treuveur@xxxxxxxxxxx>

commit c3281abea67c9c0dc6219bbc41d1feae05a16da3 upstream.

Manage interrupt coming from coprocessor also when state is
ATTACHED.

Fixes: 35bdafda40cc ("remoteproc: stm32_rproc: Add mutex protection for workqueue")
Cc: stable@xxxxxxxxxxxxxxx
Signed-off-by: Gwenael Treuveur <gwenael.treuveur@xxxxxxxxxxx>
Acked-by: Arnaud Pouliquen <arnaud.pouliquen@xxxxxxxxxxx>
Link: https://lore.kernel.org/r/20240521162316.156259-1-gwenael.treuveur@xxxxxxxxxxx
Signed-off-by: Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/remoteproc/stm32_rproc.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/remoteproc/stm32_rproc.c
+++ b/drivers/remoteproc/stm32_rproc.c
@@ -293,7 +293,7 @@ static void stm32_rproc_mb_vq_work(struc
 
 	mutex_lock(&rproc->lock);
 
-	if (rproc->state != RPROC_RUNNING)
+	if (rproc->state != RPROC_RUNNING && rproc->state != RPROC_ATTACHED)
 		goto unlock_mutex;
 
 	if (rproc_vq_interrupt(rproc, mb->vq_id) == IRQ_NONE)






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