From 8ac456495a33d9466076fea94594181ceefb76d9 Mon Sep 17 00:00:00 2001 From: Ezequiel Garcia Date: Sun, 19 Aug 2012 21:23:46 -0300 Subject: [PATCH] [media] stk1160: Stop device and unqueue buffers when start_streaming() fails If start_streaming() fails (e.g. out of memory) the driver needs to rewind the start procedure. This implies possibly stopping the device and clearing the buffer queue. Signed-off-by: Ezequiel Garcia Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/stk1160/stk1160-v4l.c | 16 ++++++++++++---- 1 file changed, 12 insertions(+), 4 deletions(-) diff --git a/drivers/media/usb/stk1160/stk1160-v4l.c b/drivers/media/usb/stk1160/stk1160-v4l.c index 879800dd162f9..fe6e857969cad 100644 --- a/drivers/media/usb/stk1160/stk1160-v4l.c +++ b/drivers/media/usb/stk1160/stk1160-v4l.c @@ -184,7 +184,7 @@ static int stk1160_start_streaming(struct stk1160 *dev) if (!dev->isoc_ctl.num_bufs || new_pkt_size) { rc = stk1160_alloc_isoc(dev); if (rc < 0) - goto out_unlock; + goto out_stop_hw; } /* submit urbs and enables IRQ */ @@ -192,8 +192,7 @@ static int stk1160_start_streaming(struct stk1160 *dev) rc = usb_submit_urb(dev->isoc_ctl.urb[i], GFP_KERNEL); if (rc) { stk1160_err("cannot submit urb[%d] (%d)\n", i, rc); - stk1160_uninit_isoc(dev); - goto out_unlock; + goto out_uninit; } } @@ -206,7 +205,16 @@ static int stk1160_start_streaming(struct stk1160 *dev) stk1160_dbg("streaming started\n"); -out_unlock: + mutex_unlock(&dev->v4l_lock); + + return 0; + +out_uninit: + stk1160_uninit_isoc(dev); +out_stop_hw: + usb_set_interface(dev->udev, 0, 0); + stk1160_clear_queue(dev); + mutex_unlock(&dev->v4l_lock); return rc;