diff options
| author | Andrej Krutak <dev@andree.sk> | 2016-09-18 21:59:21 +0300 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2016-09-19 23:58:08 +0300 |
| commit | b2233d97a0e64aa1f0557ffb409c957748ae7f3a (patch) | |
| tree | c32250cec2955d94c2a05010151c19fb3bc6884c /sound/usb/line6/pcm.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/pcm.c')
| -rw-r--r-- | sound/usb/line6/pcm.c | 21 |
1 files changed, 14 insertions, 7 deletions
diff --git a/sound/usb/line6/pcm.c b/sound/usb/line6/pcm.c index 41aa3355e920..317ba68446c6 100644 --- a/sound/usb/line6/pcm.c +++ b/sound/usb/line6/pcm.c @@ -104,7 +104,7 @@ static void line6_unlink_audio_urbs(struct snd_line6_pcm *line6pcm, { int i; - for (i = 0; i < LINE6_ISO_BUFFERS; i++) { + for (i = 0; i < line6pcm->line6->iso_buffers; i++) { if (test_bit(i, &pcms->active_urbs)) { if (!test_and_set_bit(i, &pcms->unlink_urbs)) usb_unlink_urb(pcms->urbs[i]); @@ -124,7 +124,7 @@ static void line6_wait_clear_audio_urbs(struct snd_line6_pcm *line6pcm, do { alive = 0; - for (i = 0; i < LINE6_ISO_BUFFERS; i++) { + for (i = 0; i < line6pcm->line6->iso_buffers; i++) { if (test_bit(i, &pcms->active_urbs)) alive++; } @@ -153,7 +153,8 @@ static int line6_buffer_acquire(struct snd_line6_pcm *line6pcm, { /* Invoked multiple times in a row so allocate once only */ if (!test_and_set_bit(type, &pstr->opened) && !pstr->buffer) { - pstr->buffer = kmalloc(LINE6_ISO_BUFFERS * LINE6_ISO_PACKETS * + pstr->buffer = kmalloc(line6pcm->line6->iso_buffers * + LINE6_ISO_PACKETS * line6pcm->max_packet_size, GFP_KERNEL); if (!pstr->buffer) return -ENOMEM; @@ -434,24 +435,30 @@ static struct snd_kcontrol_new line6_controls[] = { /* Cleanup the PCM device. */ -static void cleanup_urbs(struct line6_pcm_stream *pcms) +static void cleanup_urbs(struct line6_pcm_stream *pcms, int iso_buffers) { int i; - for (i = 0; i < LINE6_ISO_BUFFERS; i++) { + /* Most likely impossible in current code... */ + if (pcms->urbs == NULL) + return; + + for (i = 0; i < iso_buffers; i++) { if (pcms->urbs[i]) { usb_kill_urb(pcms->urbs[i]); usb_free_urb(pcms->urbs[i]); } } + kfree(pcms->urbs); + pcms->urbs = NULL; } static void line6_cleanup_pcm(struct snd_pcm *pcm) { struct snd_line6_pcm *line6pcm = snd_pcm_chip(pcm); - cleanup_urbs(&line6pcm->out); - cleanup_urbs(&line6pcm->in); + cleanup_urbs(&line6pcm->out, line6pcm->line6->iso_buffers); + cleanup_urbs(&line6pcm->in, line6pcm->line6->iso_buffers); kfree(line6pcm); } |