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Commit 419dd837 authored by Oleg Nesterov's avatar Oleg Nesterov Committed by Mauro Carvalho Chehab
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V4L/DVB (5123): Buf_qbuf: fix: videobuf_queue->stream corruption and lockup 



We are doing ->buf_prepare(buf) before adding buf to q->stream list. This
means that videobuf_qbuf() should not try to re-add a STATE_PREPARED buffer.

Signed-off-by: default avatarOleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: default avatarMauro Carvalho Chehab <mchehab@infradead.org>
parent 99ddcc7e

drivers/media/video/video-buf.c

+1 −0
Original line number Diff line number Diff line
@@ -700,6 +700,7 @@ videobuf_qbuf(struct videobuf_queue *q, 
		goto done;

	}

	if (buf->state == STATE_QUEUED ||

	    buf->state == STATE_PREPARED ||

	    buf->state == STATE_ACTIVE) {

		dprintk(1,"qbuf: buffer is already queued or active.\n");

		goto done;