From 419dd8378dfa32985672ab7927b4bc827f33b332 Mon Sep 17 00:00:00 2001
From: Oleg Nesterov <oleg@tv-sign.ru>
Date: Tue, 23 Jan 2007 20:04:13 -0300
Subject: [PATCH] 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>
---
drivers/media/video/video-buf.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/media/video/video-buf.c b/drivers/media/video/video-buf.c
index 635d102c86f..6504a586684 100644
--- a/drivers/media/video/video-buf.c
+++ b/drivers/media/video/video-buf.c
@@ -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;
--
2.41.3