#define MAX_PACKS 10
#define MAX_PACKS_HS (MAX_PACKS * 8) /* in high speed mode */
#define MAX_URBS 5 /* max. 20ms long packets */
-#define SYNC_URBS 2 /* always two urbs for sync */
+#define SYNC_URBS 4 /* always four urbs for sync */
#define MIN_PACKS_URB 1 /* minimum 1 packet per urb */
typedef struct snd_usb_substream snd_usb_substream_t;
/* set the buffer pointer */
urb->transfer_buffer = runtime->dma_area + subs->hwptr * stride;
subs->hwptr += offs;
+ if (subs->hwptr == runtime->buffer_size)
+ subs->hwptr = 0;
}
spin_unlock_irqrestore(&subs->lock, flags);
urb->transfer_buffer_length = offs * stride;
usb_free_urb(u->urb);
u->urb = NULL;
}
- if (u->buf) {
- kfree(u->buf);
- u->buf = NULL;
- }
+ kfree(u->buf);
+ u->buf = NULL;
}
/*
release_urb_ctx(&subs->dataurb[i]);
for (i = 0; i < SYNC_URBS; i++)
release_urb_ctx(&subs->syncurb[i]);
- if (subs->tmpbuf) {
- kfree(subs->tmpbuf);
- subs->tmpbuf = NULL;
- }
+ kfree(subs->tmpbuf);
+ subs->tmpbuf = NULL;
subs->nurbs = 0;
}
get_endpoint(alts, 1)->bRefresh >= 1 &&
get_endpoint(alts, 1)->bRefresh <= 9)
subs->syncinterval = get_endpoint(alts, 1)->bRefresh;
- else
+ else if (snd_usb_get_speed(subs->dev) == USB_SPEED_FULL)
subs->syncinterval = 1;
+ else if (get_endpoint(alts, 1)->bInterval >= 1 &&
+ get_endpoint(alts, 1)->bInterval <= 16)
+ subs->syncinterval = get_endpoint(alts, 1)->bInterval - 1;
+ else
+ subs->syncinterval = 3;
}
/* always fill max packet size */