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authorTerry Heo <terryheo@google.com>2015-09-22 05:18:05 -0300
committerMauro Carvalho Chehab <mchehab@osg.samsung.com>2015-11-17 14:53:41 -0200
commitce3556bde3f507788bc3d0eedbf2e2cc85ba9f8c (patch)
treec51b79a3d88067f5969dc8ef5745e872e2f60507 /drivers/media/usb
parent18a8560cbd627c96477f8f44513e3744d84aced8 (diff)
[media] cx231xx: fix bulk transfer mode
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>
Diffstat (limited to 'drivers/media/usb')
-rw-r--r--drivers/media/usb/cx231xx/cx231xx-core.c15
1 files changed, 14 insertions, 1 deletions
diff --git a/drivers/media/usb/cx231xx/cx231xx-core.c b/drivers/media/usb/cx231xx/cx231xx-core.c
index a2fd49b6be83..f497888d94bf 100644
--- a/drivers/media/usb/cx231xx/cx231xx-core.c
+++ b/drivers/media/usb/cx231xx/cx231xx-core.c
@@ -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 */

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