/* * Processes the data read from the device. */ static void snd_usbmidi_in_urb_complete(struct urb* urb, struct pt_regs *regs) { snd_usb_midi_in_endpoint_t* ep = urb->context; if (urb->status == 0) { dump_urb("received", urb->transfer_buffer, urb->actual_length); ep->umidi->usb_protocol_ops->input(ep, urb->transfer_buffer, urb->actual_length); } else { int err = snd_usbmidi_urb_error(urb->status); if (err < 0) { if (err != -ENODEV) { ep->error_resubmit = 1; mod_timer(&ep->umidi->error_timer, jiffies + ERROR_DELAY_JIFFIES); } return; } } if (usb_pipe_needs_resubmit(urb->pipe)) { urb->dev = ep->umidi->chip->dev; snd_usbmidi_submit_urb(urb, GFP_ATOMIC); } }
/* * Processes the data read from the device. */ static void snd_usbmidi_in_urb_complete(struct urb* urb, struct pt_regs *regs) { snd_usb_midi_in_endpoint_t* ep = urb->context; if (urb->status == 0) { uint8_t* buffer = (uint8_t*)ep->urb->transfer_buffer; int i; for (i = 0; i + 4 <= urb->actual_length; i += 4) if (buffer[i] != 0) snd_usbmidi_input_packet(ep, &buffer[i]); } else { if (snd_usbmidi_urb_error(urb->status) < 0) return; } if (usb_pipe_needs_resubmit(urb->pipe)) { urb->dev = ep->umidi->chip->dev; snd_usbmidi_submit_urb(urb, GFP_ATOMIC); } }