diff options
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/video/em28xx/em28xx-core.c | 50 |
1 files changed, 25 insertions, 25 deletions
diff --git a/drivers/media/video/em28xx/em28xx-core.c b/drivers/media/video/em28xx/em28xx-core.c index 227a47d6e4b..ba2d986c6df 100644 --- a/drivers/media/video/em28xx/em28xx-core.c +++ b/drivers/media/video/em28xx/em28xx-core.c @@ -714,11 +714,12 @@ void em2820_uninit_isoc(struct em2820 *dev) for (i = 0; i < EM2820_NUM_BUFS; i++) { if (dev->urb[i]) { usb_kill_urb(dev->urb[i]); + if (dev->transfer_buffer[i]){ + usb_buffer_free(dev->udev,(EM2820_NUM_PACKETS*dev->max_pkt_size),dev->transfer_buffer[i],dev->urb[i]->transfer_dma); + } usb_free_urb(dev->urb[i]); } dev->urb[i] = NULL; - if (dev->transfer_buffer[i]) - kfree(dev->transfer_buffer[i]); dev->transfer_buffer[i] = NULL; } em2820_capture_start(dev, 0); @@ -743,7 +744,13 @@ int em2820_init_isoc(struct em2820 *dev) struct urb *urb; int j, k; /* allocate transfer buffer */ - dev->transfer_buffer[i] = kmalloc(sb_size, GFP_KERNEL); + urb = usb_alloc_urb(EM2820_NUM_PACKETS, GFP_KERNEL); + if (!urb){ + em2820_errdev("cannot alloc urb %i\n", i); + em2820_uninit_isoc(dev); + return -ENOMEM; + } + dev->transfer_buffer[i] = usb_buffer_alloc(dev->udev, sb_size, GFP_KERNEL,&urb->transfer_dma); if (!dev->transfer_buffer[i]) { em2820_errdev ("unable to allocate %i bytes for transfer buffer %i\n", @@ -752,29 +759,22 @@ int em2820_init_isoc(struct em2820 *dev) return -ENOMEM; } memset(dev->transfer_buffer[i], 0, sb_size); - urb = usb_alloc_urb(EM2820_NUM_PACKETS, GFP_KERNEL); - if (urb) { - urb->dev = dev->udev; - urb->context = dev; - urb->pipe = usb_rcvisocpipe(dev->udev, 0x82); - urb->transfer_flags = URB_ISO_ASAP; - urb->interval = 1; - urb->transfer_buffer = dev->transfer_buffer[i]; - urb->complete = em2820_isocIrq; - urb->number_of_packets = EM2820_NUM_PACKETS; - urb->transfer_buffer_length = sb_size; - for (j = k = 0; j < EM2820_NUM_PACKETS; - j++, k += dev->max_pkt_size) { - urb->iso_frame_desc[j].offset = k; - urb->iso_frame_desc[j].length = - dev->max_pkt_size; - } - dev->urb[i] = urb; - } else { - em2820_errdev("cannot alloc urb %i\n", i); - em2820_uninit_isoc(dev); - return -ENOMEM; + urb->dev = dev->udev; + urb->context = dev; + urb->pipe = usb_rcvisocpipe(dev->udev, 0x82); + urb->transfer_flags = URB_ISO_ASAP; + urb->interval = 1; + urb->transfer_buffer = dev->transfer_buffer[i]; + urb->complete = em2820_isocIrq; + urb->number_of_packets = EM2820_NUM_PACKETS; + urb->transfer_buffer_length = sb_size; + for (j = k = 0; j < EM2820_NUM_PACKETS; + j++, k += dev->max_pkt_size) { + urb->iso_frame_desc[j].offset = k; + urb->iso_frame_desc[j].length = + dev->max_pkt_size; } + dev->urb[i] = urb; } /* submit urbs */ |