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authorClemens Ladisch <clemens@ladisch.de>2006-09-22 10:57:36 +0200
committerJaroslav Kysela <perex@suse.cz>2006-09-23 10:48:17 +0200
commit92b9ac78f934616d08c72747607bfb0fa51ee52d (patch)
treedecb3ba04de5cf83a1a2ab819e793dc8c2a533cf /sound/usb/usbaudio.c
parenteb995a8c82dba4a8e027c99ac5001fbc287a115c (diff)
downloadlinux-2.6.34-ux500-92b9ac78f934616d08c72747607bfb0fa51ee52d.tar.gz
[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: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
Diffstat (limited to 'sound/usb/usbaudio.c')
-rw-r--r--sound/usb/usbaudio.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/sound/usb/usbaudio.c b/sound/usb/usbaudio.c
index 664dd4c21e6..49248fa7aef 100644
--- a/sound/usb/usbaudio.c
+++ b/sound/usb/usbaudio.c
@@ -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 */