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-rw-r--r--sound/usb/usbmidi.c87
1 files changed, 54 insertions, 33 deletions
diff --git a/sound/usb/usbmidi.c b/sound/usb/usbmidi.c
index 2fb35cc22a3..cc17401de95 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);
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-17 07:33:44 +0000