V4L/DVB (8701): cx18: Add missing lock for when the irq handler manipulates the queues

cx18: Add missing lock for when the irq handler manipulates the queues.  This
was a potential source of stream queue corruption.  Also changed the name of
cx18_queue_find_buf() to cx18_queue_get_buf_irq().

Signed-off-by: Andy Walls <awalls@radix.net>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/media/video/cx18/cx18-irq.c b/drivers/media/video/cx18/cx18-irq.c
index 25114a5cbd57..ab218315c84b 100644
--- a/drivers/media/video/cx18/cx18-irq.c
+++ b/drivers/media/video/cx18/cx18-irq.c
@@ -61,7 +61,7 @@ static void epu_dma_done(struct cx18 *cx, struct cx18_mailbox *mb)
                 CX18_WARN("Ack struct = %d for %s\n",
                         mb->args[2], s->name);
         id = read_enc(off);
-        buf = cx18_queue_find_buf(s, id, read_enc(off + 4));
+        buf = cx18_queue_get_buf_irq(s, id, read_enc(off + 4));
         CX18_DEBUG_HI_DMA("DMA DONE for %s (buffer %d)\n", s->name, id);
         if (buf) {
                 cx18_buf_sync_for_cpu(s, buf);