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authorClemens Ladisch <clemens@ladisch.de>2006-09-22 04:57:36 -0400
committerJaroslav Kysela <perex@suse.cz>2006-09-23 04:48:17 -0400
commit92b9ac78f934616d08c72747607bfb0fa51ee52d (patch)
treedecb3ba04de5cf83a1a2ab819e793dc8c2a533cf /sound
parenteb995a8c82dba4a8e027c99ac5001fbc287a115c (diff)
[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')
-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 664dd4c21e66..49248fa7aef4 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 */
68static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */ 68static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
69static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Vendor ID for this card */ 69static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Vendor ID for this card */
70static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Product ID for this card */ 70static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Product ID for this card */
71static int nrpacks = 4; /* max. number of packets per urb */ 71static int nrpacks = 8; /* max. number of packets per urb */
72static int async_unlink = 1; 72static int async_unlink = 1;
73static int device_setup[SNDRV_CARDS]; /* device parameter for this card*/ 73static int device_setup[SNDRV_CARDS]; /* device parameter for this card*/
74 74
@@ -100,7 +100,7 @@ MODULE_PARM_DESC(device_setup, "Specific device setup (if needed).");
100 * 100 *
101 */ 101 */
102 102
103#define MAX_PACKS 10 103#define MAX_PACKS 20
104#define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */ 104#define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */
105#define MAX_URBS 8 105#define MAX_URBS 8
106#define SYNC_URBS 4 /* always four urbs for sync */ 106#define SYNC_URBS 4 /* always four urbs for sync */