Not all PODs use MIDI via USB data interface, thus allow avoiding that code and instead using direct processing.
Signed-off-by: Andrej Krutak dev@andree.sk --- sound/usb/line6/driver.c | 59 ++++++++++++++++++++++++++++-------------------- sound/usb/line6/driver.h | 8 ++++--- sound/usb/line6/midi.c | 2 +- 3 files changed, 40 insertions(+), 29 deletions(-)
diff --git a/sound/usb/line6/driver.c b/sound/usb/line6/driver.c index 9b16777..853a143 100644 --- a/sound/usb/line6/driver.c +++ b/sound/usb/line6/driver.c @@ -290,26 +290,31 @@ static void line6_data_received(struct urb *urb) if (urb->status == -ESHUTDOWN) return;
- done = - line6_midibuf_write(mb, urb->transfer_buffer, urb->actual_length); + if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) { + done = + line6_midibuf_write(mb, urb->transfer_buffer, urb->actual_length);
- if (done < urb->actual_length) { - line6_midibuf_ignore(mb, done); - dev_dbg(line6->ifcdev, "%d %d buffer overflow - message skipped\n", - done, urb->actual_length); - } + if (done < urb->actual_length) { + line6_midibuf_ignore(mb, done); + dev_dbg(line6->ifcdev, "%d %d buffer overflow - message skipped\n", + done, urb->actual_length); + }
- for (;;) { - done = - line6_midibuf_read(mb, line6->buffer_message, - LINE6_MESSAGE_MAXLEN); + for (;;) { + done = + line6_midibuf_read(mb, line6->buffer_message, + LINE6_MESSAGE_MAXLEN);
- if (done == 0) - break; + if (done == 0) + break;
- line6->message_length = done; - line6_midi_receive(line6, line6->buffer_message, done); + line6->message_length = done; + line6_midi_receive(line6, line6->buffer_message, done);
+ if (line6->process_message) + line6->process_message(line6); + } + } else { if (line6->process_message) line6->process_message(line6); } @@ -469,7 +474,9 @@ static void line6_destruct(struct snd_card *card) struct usb_device *usbdev = line6->usbdev;
/* free buffer memory first: */ - kfree(line6->buffer_message); + if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) + kfree(line6->buffer_message); + kfree(line6->buffer_listen);
/* then free URBs: */ @@ -515,7 +522,7 @@ static void line6_get_interval(struct usb_line6 *line6) } }
-static int line6_init_cap_control_midi(struct usb_line6 *line6) +static int line6_init_cap_control(struct usb_line6 *line6) { int ret;
@@ -524,14 +531,16 @@ static int line6_init_cap_control_midi(struct usb_line6 *line6) if (!line6->buffer_listen) return -ENOMEM;
- line6->buffer_message = kmalloc(LINE6_MESSAGE_MAXLEN, GFP_KERNEL); - if (!line6->buffer_message) - return -ENOMEM; - line6->urb_listen = usb_alloc_urb(0, GFP_KERNEL); if (!line6->urb_listen) return -ENOMEM;
+ if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) { + line6->buffer_message = kmalloc(LINE6_MESSAGE_MAXLEN, GFP_KERNEL); + if (!line6->buffer_message) + return -ENOMEM; + } + ret = line6_start_listen(line6); if (ret < 0) { dev_err(line6->ifcdev, "cannot start listening: %d\n", ret); @@ -605,8 +614,8 @@ int line6_probe(struct usb_interface *interface,
line6_get_interval(line6);
- if (properties->capabilities & LINE6_CAP_CONTROL_MIDI) { - ret = line6_init_cap_control_midi(line6); + if (properties->capabilities & LINE6_CAP_CONTROL) { + ret = line6_init_cap_control(line6); if (ret < 0) goto error; } @@ -676,7 +685,7 @@ int line6_suspend(struct usb_interface *interface, pm_message_t message)
snd_power_change_state(line6->card, SNDRV_CTL_POWER_D3hot);
- if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) + if (line6->properties->capabilities & LINE6_CAP_CONTROL) line6_stop_listen(line6);
if (line6pcm != NULL) { @@ -695,7 +704,7 @@ int line6_resume(struct usb_interface *interface) { struct usb_line6 *line6 = usb_get_intfdata(interface);
- if (line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI) + if (line6->properties->capabilities & LINE6_CAP_CONTROL) line6_start_listen(line6);
snd_power_change_state(line6->card, SNDRV_CTL_POWER_D0); diff --git a/sound/usb/line6/driver.h b/sound/usb/line6/driver.h index 2551cb5..71ad299 100644 --- a/sound/usb/line6/driver.h +++ b/sound/usb/line6/driver.h @@ -146,15 +146,17 @@ struct usb_line6 { /* URB for listening to POD data endpoint */ struct urb *urb_listen;
- /* Buffer for listening to POD data endpoint */ + /* Buffer for incoming data from POD data endpoint */ unsigned char *buffer_listen;
- /* Buffer for message to be processed */ + /* Buffer for message to be processed, generated from MIDI layer */ unsigned char *buffer_message;
- /* Length of message to be processed */ + /* Length of message to be processed, generated from MIDI layer */ int message_length;
+ /* If MIDI is supported, buffer_message contains the pre-processed data; + * otherwise the data is only in urb_listen (buffer_incoming). */ void (*process_message)(struct usb_line6 *); void (*disconnect)(struct usb_line6 *line6); }; diff --git a/sound/usb/line6/midi.c b/sound/usb/line6/midi.c index cebea9b..d0fb2f2 100644 --- a/sound/usb/line6/midi.c +++ b/sound/usb/line6/midi.c @@ -258,7 +258,7 @@ int line6_init_midi(struct usb_line6 *line6) struct snd_rawmidi *rmidi; struct snd_line6_midi *line6midi;
- if (!(line6->properties->capabilities & LINE6_CAP_CONTROL)) { + if (!(line6->properties->capabilities & LINE6_CAP_CONTROL_MIDI)) { /* skip MIDI initialization and report success */ return 0; }