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Commit 92b9ac78 authored by Clemens Ladisch's avatar Clemens Ladisch Committed by Jaroslav Kysela
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[ALSA] usb-audio: increase number of packets per URB 



To decrease the USB interrupts rate, increase both the default and the
maximum number of packets per URB.

Signed-off-by: default avatarClemens Ladisch <clemens@ladisch.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent eb995a8c

sound/usb/usbaudio.c

+2 −2
Original line number Diff line number Diff line
@@ -68,7 +68,7 @@ static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */ 
static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP;	/* Enable this card */

static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Vendor ID for this card */

static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Product ID for this card */

static int nrpacks = 4;		/* max. number of packets per urb */

static int nrpacks = 8;		/* max. number of packets per urb */

static int async_unlink = 1;

static int device_setup[SNDRV_CARDS]; /* device parameter for this card*/
@@ -100,7 +100,7 @@ MODULE_PARM_DESC(device_setup, "Specific device setup (if needed)."); 
 *

 */



#define MAX_PACKS	10

#define MAX_PACKS	20

#define MAX_PACKS_HS	(MAX_PACKS * 8)	/* in high speed mode */

#define MAX_URBS	8

#define SYNC_URBS	4	/* always four urbs for sync */