In some circumstances when g_audio is being unloaded there happens
an endless loop in udc driver. It has happend on a board with
s3c-hsotg. If there are requests in endpoint's queue, they are completed
in a loop. But completing them might cause appending new requests
to the queue. This patch causes agdev_iso_complete() to return immediately
if request's status is -ESHUTDOWN. If it does not return immediately,
then although the current request is removed from the queue, a new one
is appended to the queue, so the above mentioned loop cannot end.
Signed-off-by: Andrzej Pietrasiewicz <andrze...@samsung.com>
---
drivers/usb/gadget/f_uac2.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/gadget/f_uac2.c b/drivers/usb/gadget/f_uac2.c
index d74a4f0..f0ffd71 100644
--- a/drivers/usb/gadget/f_uac2.c
+++ b/drivers/usb/gadget/f_uac2.c
@@ -194,7 +194,7 @@ agdev_iso_complete(struct usb_ep *ep, struct usb_request
*req)
struct snd_uac2_chip *uac2 = prm->uac2;
/* i/f shutting down */
- if (!prm->ep_enabled)
+ if (!prm->ep_enabled || req->status == -ESHUTDOWN)
return;
/*
--
1.8.3.2
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