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[media] cx231xx: fix bulk transfer mode

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The current cx231xx driver doesn't work with bulk transfer mode.
This patch makes it possible to use bulk transfer mode.

Signed-off-by: Terry Heo <terryheo@google.com>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
This commit is contained in:
Terry Heo 2015-09-22 05:18:05 -03:00 committed by Mauro Carvalho Chehab
parent 18a8560cbd
commit ce3556bde3
1 changed files with 14 additions and 1 deletions
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15
drivers/media/usb/cx231xx/cx231xx-core.c
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@ -914,6 +914,7 @@ EXPORT_SYMBOL_GPL(cx231xx_uninit_isoc);
*/
void cx231xx_uninit_bulk(struct cx231xx *dev)
{
struct cx231xx_dmaqueue *dma_q = &dev->video_mode.vidq;
struct urb *urb;
int i;
@ -931,7 +932,7 @@ void cx231xx_uninit_bulk(struct cx231xx *dev)
if (dev->video_mode.bulk_ctl.transfer_buffer[i]) {
usb_free_coherent(dev->udev,
urb->transfer_buffer_length,
dev->video_mode.isoc_ctl.
dev->video_mode.bulk_ctl.
transfer_buffer[i],
urb->transfer_dma);
}
@ -943,10 +944,12 @@ void cx231xx_uninit_bulk(struct cx231xx *dev)
kfree(dev->video_mode.bulk_ctl.urb);
kfree(dev->video_mode.bulk_ctl.transfer_buffer);
kfree(dma_q->p_left_data);
dev->video_mode.bulk_ctl.urb = NULL;
dev->video_mode.bulk_ctl.transfer_buffer = NULL;
dev->video_mode.bulk_ctl.num_bufs = 0;
dma_q->p_left_data = NULL;
if (dev->mode_tv == 0)
cx231xx_capture_start(dev, 0, Raw_Video);
@ -1196,6 +1199,16 @@ int cx231xx_init_bulk(struct cx231xx *dev, int max_packets,
sb_size, cx231xx_bulk_irq_callback, dma_q);
}
/* clear halt */
rc = usb_clear_halt(dev->udev, dev->video_mode.bulk_ctl.urb[0]->pipe);
if (rc < 0) {
dev_err(dev->dev,
"failed to clear USB bulk endpoint stall/halt condition (error=%i)\n",
rc);
cx231xx_uninit_bulk(dev);
return rc;
}
init_waitqueue_head(&dma_q->wq);
/* submit urbs and enables IRQ */