From 92b9ac78f934616d08c72747607bfb0fa51ee52d Mon Sep 17 00:00:00 2001 From: Clemens Ladisch Date: Fri, 22 Sep 2006 10:57:36 +0200 Subject: [PATCH] [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 Signed-off-by: Jaroslav Kysela --- sound/usb/usbaudio.c | 4 ++-- 1 file 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 */ 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 */