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authorMauro Carvalho Chehab <mchehab@infradead.org>2007-01-14 08:33:24 -0300
committerMauro Carvalho Chehab <mchehab@infradead.org>2007-02-21 13:34:21 -0200
commit0b600512860cab5a0bb4647f5f726a91bce2633c (patch)
tree5529e311a32d5581c6fc152d7eab1c4b9768b5d2
parentdf3a710458462aa9427cdeec947bf71af257e8dd (diff)
V4L/DVB (5074): Some fixes at stream waitqueue on vivi
There are several potential troubles on vivi waitqueue code: - Watchdog timer should be reset at every received frame; - Watchdog timer should be reset at the beginning of vivi_thread(); - Checks for errors when creating a newer thread with kernel_thread(); - Wake up vivi_thread() after creating it. Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
-rw-r--r--drivers/media/video/vivi.c16
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/media/video/vivi.c b/drivers/media/video/vivi.c
index 119cfd5ce31..17844192273 100644
--- a/drivers/media/video/vivi.c
+++ b/drivers/media/video/vivi.c
@@ -471,11 +471,12 @@ static void vivi_thread_tick(struct vivi_dmaqueue *dma_q)
/* Fill buffer */
vivi_fillbuff(dev,buf);
- }
- if (list_empty(&dma_q->active)) {
- del_timer(&dma_q->timeout);
- } else {
- mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT);
+
+ if (list_empty(&dma_q->active)) {
+ del_timer(&dma_q->timeout);
+ } else {
+ mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT);
+ }
}
if (bc != 1)
dprintk(1,"%s: %d buffers handled (should be 1)\n",__FUNCTION__,bc);
@@ -522,6 +523,8 @@ static int vivi_thread(void *data)
dprintk(1,"thread started\n");
+ mod_timer(&dma_q->timeout, jiffies+BUFFER_TIMEOUT);
+
for (;;) {
vivi_sleep(dma_q);
@@ -545,6 +548,9 @@ static int vivi_start_thread(struct vivi_dmaqueue *dma_q)
printk(KERN_ERR "vivi: kernel_thread() failed\n");
return PTR_ERR(dma_q->kthread);
}
+ /* Wakes thread */
+ wake_up_interruptible(&dma_q->wq);
+
dprintk(1,"returning from %s\n",__FUNCTION__);
return 0;
}