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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: Oleg Nesterov <oleg@tv-sign.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
This commit is contained in:
Oleg Nesterov 2007-01-23 20:04:13 -03:00 committed by Mauro Carvalho Chehab
parent 99ddcc7edb
commit 419dd8378d
1 changed files with 1 additions and 0 deletions
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drivers/media/video/video-buf.c
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@ -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;