Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=6b9fa70a73e8627c2823ee95e7c55d77e0716f1c
Commit: 6b9fa70a73e8627c2823ee95e7c55d77e0716f1c
Parent: 27fe0f4b985d8427d93ff6c9457e198ab8ffe035
Author: Takashi Iwai <[EMAIL PROTECTED]>
AuthorDate: Wed May 2 12:09:48 2007 +0200
Committer: Jaroslav Kysela <[EMAIL PROTECTED]>
CommitDate: Fri May 11 16:56:13 2007 +0200
[ALSA] usb-audio - Fix the minimum period size per transfer mode
The minimal period size is 125us for high-speed mode while
1ms for full-speed mode.
Signed-off-by: Takashi Iwai <[EMAIL PROTECTED]>
Signed-off-by: Jaroslav Kysela <[EMAIL PROTECTED]>
---
sound/usb/usbaudio.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index b6d8863..78efcff 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -1879,7 +1879,9 @@ static int setup_hw_info(struct snd_pcm_runtime *runtime,
struct snd_usb_substre
/* set the period time minimum 1ms */
snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME,
- 1000 * MIN_PACKS_URB,
+ snd_usb_get_speed(subs->dev) ==
USB_SPEED_FULL ?
+
+ 1000 * MIN_PACKS_URB : 125 * MIN_PACKS_URB,
/*(nrpacks * MAX_URBS) * 1000*/ UINT_MAX);
if (check_hw_params_convention(subs)) {
-
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