diff options
Diffstat (limited to 'sound/usb/usbmidi.c')
| -rw-r--r-- | sound/usb/usbmidi.c | 87 |
1 files changed, 54 insertions, 33 deletions
diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c index 2fb35cc..cc17401 100644 --- a/sound/usb/usbmidi.c +++ b/sound/usb/usbmidi.c @@ -62,6 +62,8 @@ */ #define ERROR_DELAY_JIFFIES (HZ / 10) +#define INPUT_URBS 7 + MODULE_AUTHOR("Clemens Ladisch <clemens@ladisch.de>"); MODULE_DESCRIPTION("USB Audio/MIDI helper module"); @@ -143,7 +145,7 @@ struct snd_usb_midi_out_endpoint { struct snd_usb_midi_in_endpoint { struct snd_usb_midi* umidi; - struct urb* urb; + struct urb* urbs[INPUT_URBS]; struct usbmidi_in_port { struct snd_rawmidi_substream *substream; u8 running_status_length; @@ -306,7 +308,7 @@ static void snd_usbmidi_out_tasklet(unsigned long data) static void snd_usbmidi_error_timer(unsigned long data) { struct snd_usb_midi *umidi = (struct snd_usb_midi *)data; - int i; + unsigned int i, j; spin_lock(&umidi->disc_lock); if (umidi->disconnected) { @@ -317,8 +319,10 @@ static void snd_usbmidi_error_timer(unsigned long data) struct snd_usb_midi_in_endpoint *in = umidi->endpoints[i].in; if (in && in->error_resubmit) { in->error_resubmit = 0; - in->urb->dev = umidi->chip->dev; - snd_usbmidi_submit_urb(in->urb, GFP_ATOMIC); + for (j = 0; j < INPUT_URBS; ++j) { + in->urbs[j]->dev = umidi->chip->dev; + snd_usbmidi_submit_urb(in->urbs[j], GFP_ATOMIC); + } } if (umidi->endpoints[i].out) snd_usbmidi_do_output(umidi->endpoints[i].out); @@ -922,12 +926,16 @@ static struct snd_rawmidi_ops snd_usbmidi_input_ops = { */ static void snd_usbmidi_in_endpoint_delete(struct snd_usb_midi_in_endpoint* ep) { - if (ep->urb) { - usb_buffer_free(ep->umidi->chip->dev, - ep->urb->transfer_buffer_length, - ep->urb->transfer_buffer, - ep->urb->transfer_dma); - usb_free_urb(ep->urb); + unsigned int i; + + for (i = 0; i < INPUT_URBS; ++i) { + if (ep->urbs[i]) { + usb_buffer_free(ep->umidi->chip->dev, + ep->urbs[i]->transfer_buffer_length, + ep->urbs[i]->transfer_buffer, + ep->urbs[i]->transfer_dma); + usb_free_urb(ep->urbs[i]); + } } kfree(ep); } @@ -943,6 +951,7 @@ static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi, void* buffer; unsigned int pipe; int length; + unsigned int i; rep->in = NULL; ep = kzalloc(sizeof(*ep), GFP_KERNEL); @@ -950,30 +959,36 @@ static int snd_usbmidi_in_endpoint_create(struct snd_usb_midi* umidi, return -ENOMEM; ep->umidi = umidi; - ep->urb = usb_alloc_urb(0, GFP_KERNEL); - if (!ep->urb) { - snd_usbmidi_in_endpoint_delete(ep); - return -ENOMEM; + for (i = 0; i < INPUT_URBS; ++i) { + ep->urbs[i] = usb_alloc_urb(0, GFP_KERNEL); + if (!ep->urbs[i]) { + snd_usbmidi_in_endpoint_delete(ep); + return -ENOMEM; + } } if (ep_info->in_interval) pipe = usb_rcvintpipe(umidi->chip->dev, ep_info->in_ep); else pipe = usb_rcvbulkpipe(umidi->chip->dev, ep_info->in_ep); length = usb_maxpacket(umidi->chip->dev, pipe, 0); - buffer = usb_buffer_alloc(umidi->chip->dev, length, GFP_KERNEL, - &ep->urb->transfer_dma); - if (!buffer) { - snd_usbmidi_in_endpoint_delete(ep); - return -ENOMEM; + for (i = 0; i < INPUT_URBS; ++i) { + buffer = usb_buffer_alloc(umidi->chip->dev, length, GFP_KERNEL, + &ep->urbs[i]->transfer_dma); + if (!buffer) { + snd_usbmidi_in_endpoint_delete(ep); + return -ENOMEM; + } + if (ep_info->in_interval) + usb_fill_int_urb(ep->urbs[i], umidi->chip->dev, + pipe, buffer, length, + snd_usbmidi_in_urb_complete, + ep, ep_info->in_interval); + else + usb_fill_bulk_urb(ep->urbs[i], umidi->chip->dev, + pipe, buffer, length, + snd_usbmidi_in_urb_complete, ep); + ep->urbs[i]->transfer_flags = URB_NO_TRANSFER_DMA_MAP; } - if (ep_info->in_interval) - usb_fill_int_urb(ep->urb, umidi->chip->dev, pipe, buffer, - length, snd_usbmidi_in_urb_complete, ep, - ep_info->in_interval); - else - usb_fill_bulk_urb(ep->urb, umidi->chip->dev, pipe, buffer, - length, snd_usbmidi_in_urb_complete, ep); - ep->urb->transfer_flags = URB_NO_TRANSFER_DMA_MAP; rep->in = ep; return 0; @@ -1090,7 +1105,7 @@ static void snd_usbmidi_free(struct snd_usb_midi* umidi) void snd_usbmidi_disconnect(struct list_head* p) { struct snd_usb_midi* umidi; - int i; + unsigned int i, j; umidi = list_entry(p, struct snd_usb_midi, list); /* @@ -1111,7 +1126,8 @@ void snd_usbmidi_disconnect(struct list_head* p) umidi->usb_protocol_ops->finish_out_endpoint(ep->out); } if (ep->in) - usb_kill_urb(ep->in->urb); + for (j = 0; j < INPUT_URBS; ++j) + usb_kill_urb(ep->in->urbs[j]); /* free endpoints here; later call can result in Oops */ if (ep->out) { snd_usbmidi_out_endpoint_delete(ep->out); @@ -1692,20 +1708,25 @@ static int snd_usbmidi_create_rawmidi(struct snd_usb_midi* umidi, void snd_usbmidi_input_stop(struct list_head* p) { struct snd_usb_midi* umidi; - int i; + unsigned int i, j; umidi = list_entry(p, struct snd_usb_midi, list); for (i = 0; i < MIDI_MAX_ENDPOINTS; ++i) { struct snd_usb_midi_endpoint* ep = &umidi->endpoints[i]; if (ep->in) - usb_kill_urb(ep->in->urb); + for (j = 0; j < INPUT_URBS; ++j) + usb_kill_urb(ep->in->urbs[j]); } } static void snd_usbmidi_input_start_ep(struct snd_usb_midi_in_endpoint* ep) { - if (ep) { - struct urb* urb = ep->urb; + unsigned int i; + + if (!ep) + return; + for (i = 0; i < INPUT_URBS; ++i) { + struct urb* urb = ep->urbs[i]; urb->dev = ep->umidi->chip->dev; snd_usbmidi_submit_urb(urb, GFP_KERNEL); } |