From ce3556bde3f507788bc3d0eedbf2e2cc85ba9f8c Mon Sep 17 00:00:00 2001 From: Terry Heo Date: Tue, 22 Sep 2015 05:18:05 -0300 Subject: [PATCH] [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 Signed-off-by: Hans Verkuil Signed-off-by: Mauro Carvalho Chehab --- drivers/media/usb/cx231xx/cx231xx-core.c | 15 ++++++++++++++- 1 file changed, 14 insertions(+), 1 deletion(-) 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 */ -- 2.11.0