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Commit 81c4899f authored by Takashi Iwai's avatar Takashi Iwai Committed by Jaroslav Kysela
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[ALSA] usbaudio - Revert the minimal period size fix patch 



The last patch didn't really work (false report).
Although the hardware supports 125us minimum period, the current
usb-audio driver code assumes the 1ms period in many places.
Rollback the change.

Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent 4d69d756

sound/usb/usbaudio.c

+4 −3
Original line number Diff line number Diff line
@@ -1878,10 +1878,11 @@ static int setup_hw_info(struct snd_pcm_runtime *runtime, struct snd_usb_substre 
	}



	/* set the period time minimum 1ms */

	/* FIXME: high-speed mode allows 125us minimum period, but many parts

	 * in the current code assume the 1ms period.

	 */

	snd_pcm_hw_constraint_minmax(runtime, SNDRV_PCM_HW_PARAM_PERIOD_TIME,

				     snd_usb_get_speed(subs->dev) == USB_SPEED_FULL ?

				     

				     1000 * MIN_PACKS_URB : 125 * MIN_PACKS_URB,

				     1000 * MIN_PACKS_URB,

				     /*(nrpacks * MAX_URBS) * 1000*/ UINT_MAX);



	if (check_hw_params_convention(subs)) {