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Commit 74536b2f authored by Laurent Pinchart's avatar Laurent Pinchart Committed by Mauro Carvalho Chehab
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[media] v4l: omap4iss: isif: Ignore VD0 interrupts when no buffer is available 



The ISIF generates VD0 interrupts even when writes are disabled.
Disabling the ISIF when no buffer is available is thus not be enough, we
need to handle the situation explicitly.

Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart@ideasonboard.com>
Signed-off-by: default avatarMauro Carvalho Chehab <m.chehab@samsung.com>
parent cd782f9d

drivers/staging/media/omap4iss/iss_ipipeif.c

+7 −0
Original line number Diff line number Diff line
@@ -235,6 +235,13 @@ static void ipipeif_isr_buffer(struct iss_ipipeif_device *ipipeif) 
{

	struct iss_buffer *buffer;



	/* The ISIF generates VD0 interrupts even when writes are disabled.

	 * deal with it anyway). Disabling the ISIF when no buffer is available

	 * is thus not be enough, we need to handle the situation explicitly.

	 */

	if (list_empty(&ipipeif->video_out.dmaqueue))

		return;



	ipipeif_write_enable(ipipeif, 0);



	buffer = omap4iss_video_buffer_next(&ipipeif->video_out);