diff options
Diffstat (limited to 'drivers/media/usb/em28xx/em28xx-core.c')
| -rw-r--r-- | drivers/media/usb/em28xx/em28xx-core.c | 32 |
1 files changed, 26 insertions, 6 deletions
diff --git a/drivers/media/usb/em28xx/em28xx-core.c b/drivers/media/usb/em28xx/em28xx-core.c index cdf4cd24007..b10d959fefe 100644 --- a/drivers/media/usb/em28xx/em28xx-core.c +++ b/drivers/media/usb/em28xx/em28xx-core.c @@ -847,11 +847,13 @@ set_alt: if (dev->alt != prev_alt) { if (dev->analog_xfer_bulk) { dev->max_pkt_size = 512; /* USB 2.0 spec */ + dev->packet_multiplier = EM28XX_BULK_PACKET_MULTIPLIER; } else { /* isoc */ em28xx_coredbg("minimum isoc packet size: %u (alt=%d)\n", min_pkt_size, dev->alt); dev->max_pkt_size = dev->alt_max_pkt_size_isoc[dev->alt]; + dev->packet_multiplier = EM28XX_NUM_ISOC_PACKETS; } em28xx_coredbg("setting alternate %d with wMaxPacketSize=%u\n", dev->alt, dev->max_pkt_size); @@ -1054,10 +1056,28 @@ int em28xx_alloc_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk, em28xx_isocdbg("em28xx: called em28xx_alloc_isoc in mode %d\n", mode); - if (mode == EM28XX_DIGITAL_MODE) + /* Check mode and if we have an endpoint for the selected + transfer type, select buffer */ + if (mode == EM28XX_DIGITAL_MODE) { + if ((xfer_bulk && !dev->dvb_ep_bulk) || + (!xfer_bulk && !dev->dvb_ep_isoc)) { + em28xx_errdev("no endpoint for DVB mode and transfer type %d\n", + xfer_bulk > 0); + return -EINVAL; + } usb_bufs = &dev->usb_ctl.digital_bufs; - else + } else if (mode == EM28XX_ANALOG_MODE) { + if ((xfer_bulk && !dev->analog_ep_bulk) || + (!xfer_bulk && !dev->analog_ep_isoc)) { + em28xx_errdev("no endpoint for analog mode and transfer type %d\n", + xfer_bulk > 0); + return -EINVAL; + } usb_bufs = &dev->usb_ctl.analog_bufs; + } else { + em28xx_errdev("invalid mode selected\n"); + return -EINVAL; + } /* De-allocates all pending stuff */ em28xx_uninit_usb_xfer(dev, mode); @@ -1113,8 +1133,8 @@ int em28xx_alloc_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk, if (xfer_bulk) { /* bulk */ pipe = usb_rcvbulkpipe(dev->udev, mode == EM28XX_ANALOG_MODE ? - EM28XX_EP_ANALOG : - EM28XX_EP_DIGITAL); + dev->analog_ep_bulk : + dev->dvb_ep_bulk); usb_fill_bulk_urb(urb, dev->udev, pipe, usb_bufs->transfer_buffer[i], sb_size, em28xx_irq_callback, dev); @@ -1122,8 +1142,8 @@ int em28xx_alloc_urbs(struct em28xx *dev, enum em28xx_mode mode, int xfer_bulk, } else { /* isoc */ pipe = usb_rcvisocpipe(dev->udev, mode == EM28XX_ANALOG_MODE ? - EM28XX_EP_ANALOG : - EM28XX_EP_DIGITAL); + dev->analog_ep_isoc : + dev->dvb_ep_isoc); usb_fill_int_urb(urb, dev->udev, pipe, usb_bufs->transfer_buffer[i], sb_size, em28xx_irq_callback, dev, 1); |