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| author | Andrej Krutak <dev@andree.sk> | 2016-09-18 18:59:21 (GMT) |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-09-19 20:58:08 (GMT) |
| commit | b2233d97a0e64aa1f0557ffb409c957748ae7f3a (patch) | |
| tree | c32250cec2955d94c2a05010151c19fb3bc6884c /sound/usb/line6/playback.c | |
| parent | c5a905d3122a501c014b1ba679d3a6d21f2b5c7b (diff) | |
| download | linux-b2233d97a0e64aa1f0557ffb409c957748ae7f3a.tar.xz | |
ALSA: line6: Enable different number of URBs for frame transfers
This basically changes LINE6_ISO_BUFFERS constant to a configurable
iso_buffers property.
Signed-off-by: Andrej Krutak <dev@andree.sk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/usb/line6/playback.c')
| -rw-r--r-- | sound/usb/line6/playback.c | 19 |
1 files changed, 12 insertions, 7 deletions
diff --git a/sound/usb/line6/playback.c b/sound/usb/line6/playback.c index 97ed593..1380fac 100644 --- a/sound/usb/line6/playback.c +++ b/sound/usb/line6/playback.c @@ -154,10 +154,10 @@ static int submit_audio_out_urb(struct snd_line6_pcm *line6pcm) (USB_INTERVALS_PER_SECOND / LINE6_ISO_INTERVAL); struct urb *urb_out; - index = - find_first_zero_bit(&line6pcm->out.active_urbs, LINE6_ISO_BUFFERS); + index = find_first_zero_bit(&line6pcm->out.active_urbs, + line6pcm->line6->iso_buffers); - if (index < 0 || index >= LINE6_ISO_BUFFERS) { + if (index < 0 || index >= line6pcm->line6->iso_buffers) { dev_err(line6pcm->line6->ifcdev, "no free URB found\n"); return -EINVAL; } @@ -286,7 +286,7 @@ int line6_submit_audio_out_all_urbs(struct snd_line6_pcm *line6pcm) { int ret = 0, i; - for (i = 0; i < LINE6_ISO_BUFFERS; ++i) { + for (i = 0; i < line6pcm->line6->iso_buffers; ++i) { ret = submit_audio_out_urb(line6pcm); if (ret < 0) break; @@ -313,11 +313,11 @@ static void audio_out_callback(struct urb *urb) line6pcm->out.last_frame = urb->start_frame; /* find index of URB */ - for (index = 0; index < LINE6_ISO_BUFFERS; index++) + for (index = 0; index < line6pcm->line6->iso_buffers; index++) if (urb == line6pcm->out.urbs[index]) break; - if (index >= LINE6_ISO_BUFFERS) + if (index >= line6pcm->line6->iso_buffers) return; /* URB has been unlinked asynchronously */ for (i = 0; i < LINE6_ISO_PACKETS; i++) @@ -401,8 +401,13 @@ int line6_create_audio_out_urbs(struct snd_line6_pcm *line6pcm) struct usb_line6 *line6 = line6pcm->line6; int i; + line6pcm->out.urbs = kzalloc( + sizeof(struct urb *) * line6->iso_buffers, GFP_KERNEL); + if (line6pcm->out.urbs == NULL) + return -ENOMEM; + /* create audio URBs and fill in constant values: */ - for (i = 0; i < LINE6_ISO_BUFFERS; ++i) { + for (i = 0; i < line6->iso_buffers; ++i) { struct urb *urb; /* URB for audio out: */ |