[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>
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eb995a8c82
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92b9ac78f9
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@ -68,7 +68,7 @@ static char *id[SNDRV_CARDS] = SNDRV_DEFAULT_STR; /* ID for this card */
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static int enable[SNDRV_CARDS] = SNDRV_DEFAULT_ENABLE_PNP; /* Enable this card */
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static int vid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Vendor ID for this card */
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static int pid[SNDRV_CARDS] = { [0 ... (SNDRV_CARDS-1)] = -1 }; /* Product ID for this card */
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static int nrpacks = 4; /* max. number of packets per urb */
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static int nrpacks = 8; /* max. number of packets per urb */
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static int async_unlink = 1;
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static int device_setup[SNDRV_CARDS]; /* device parameter for this card*/
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@ -100,7 +100,7 @@ MODULE_PARM_DESC(device_setup, "Specific device setup (if needed).");
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*
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*/
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#define MAX_PACKS 10
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#define MAX_PACKS 20
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#define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */
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#define MAX_URBS 8
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#define SYNC_URBS 4 /* always four urbs for sync */
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