[PATCH] remoteproc: stm32_rproc: Fix mailbox interrupts queuing

[Gwenael Treuveur <gwenael.treuveur@xxxxxxxxxxx>]

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>

diff --git a/drivers/remoteproc/stm32_rproc.c b/drivers/remoteproc/stm32_rproc.c
index 88623df7d0c3..8c7f7950b80e 100644
--- a/drivers/remoteproc/stm32_rproc.c
+++ b/drivers/remoteproc/stm32_rproc.c
@@ -294,7 +294,7 @@ static void stm32_rproc_mb_vq_work(struct work_struct *work)
 
 	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)