diff options
Diffstat (limited to 'drivers/usb/atm/usbatm.c')
| -rw-r--r-- | drivers/usb/atm/usbatm.c | 30 |
1 files changed, 15 insertions, 15 deletions
diff --git a/drivers/usb/atm/usbatm.c b/drivers/usb/atm/usbatm.c index 1d829c29c86d..923f2d9269bc 100644 --- a/drivers/usb/atm/usbatm.c +++ b/drivers/usb/atm/usbatm.c @@ -1049,17 +1049,23 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, init_completion(&instance->thread_exited); INIT_LIST_HEAD(&instance->vcc_list); + skb_queue_head_init(&instance->sndqueue); usbatm_init_channel(&instance->rx_channel); usbatm_init_channel(&instance->tx_channel); tasklet_init(&instance->rx_channel.tasklet, usbatm_rx_process, (unsigned long)instance); tasklet_init(&instance->tx_channel.tasklet, usbatm_tx_process, (unsigned long)instance); - instance->rx_channel.endpoint = usb_rcvbulkpipe(usb_dev, driver->in); - instance->tx_channel.endpoint = usb_sndbulkpipe(usb_dev, driver->out); instance->rx_channel.stride = ATM_CELL_SIZE + driver->rx_padding; instance->tx_channel.stride = ATM_CELL_SIZE + driver->tx_padding; instance->rx_channel.usbatm = instance->tx_channel.usbatm = instance; + if ((instance->flags & UDSL_USE_ISOC) && driver->isoc_in) + instance->rx_channel.endpoint = usb_rcvisocpipe(usb_dev, driver->isoc_in); + else + instance->rx_channel.endpoint = usb_rcvbulkpipe(usb_dev, driver->bulk_in); + + instance->tx_channel.endpoint = usb_sndbulkpipe(usb_dev, driver->bulk_out); + /* tx buffer size must be a positive multiple of the stride */ instance->tx_channel.buf_size = max (instance->tx_channel.stride, snd_buf_bytes - (snd_buf_bytes % instance->tx_channel.stride)); @@ -1080,6 +1086,7 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, num_packets--; instance->rx_channel.buf_size = num_packets * maxpacket; + instance->rx_channel.packet_size = maxpacket; #ifdef DEBUG for (i = 0; i < 2; i++) { @@ -1090,22 +1097,16 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, } #endif - skb_queue_head_init(&instance->sndqueue); + /* initialize urbs */ for (i = 0; i < num_rcv_urbs + num_snd_urbs; i++) { - struct urb *urb; u8 *buffer; - unsigned int iso_packets = 0, iso_size = 0; struct usbatm_channel *channel = i < num_rcv_urbs ? &instance->rx_channel : &instance->tx_channel; + struct urb *urb; + unsigned int iso_packets = usb_pipeisoc(channel->endpoint) ? channel->buf_size / channel->packet_size : 0; - if (usb_pipeisoc(channel->endpoint)) { - /* don't expect iso out endpoints */ - iso_size = usb_maxpacket(instance->usb_dev, channel->endpoint, 0); - iso_size -= iso_size % channel->stride; /* alignment */ - BUG_ON(!iso_size); - iso_packets = (channel->buf_size - 1) / iso_size + 1; - } + UDSL_ASSERT(!usb_pipeisoc(channel->endpoint) || usb_pipein(channel->endpoint)); urb = usb_alloc_urb(iso_packets, GFP_KERNEL); if (!urb) { @@ -1132,9 +1133,8 @@ int usbatm_usb_probe(struct usb_interface *intf, const struct usb_device_id *id, urb->transfer_flags = URB_ISO_ASAP; urb->number_of_packets = iso_packets; for (j = 0; j < iso_packets; j++) { - urb->iso_frame_desc[j].offset = iso_size * j; - urb->iso_frame_desc[j].length = min_t(int, iso_size, - channel->buf_size - urb->iso_frame_desc[j].offset); + urb->iso_frame_desc[j].offset = channel->packet_size * j; + urb->iso_frame_desc[j].length = channel->packet_size; } } |