diff options
Diffstat (limited to 'firmware/usbstack')
| -rw-r--r-- | firmware/usbstack/usb_storage.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/firmware/usbstack/usb_storage.c b/firmware/usbstack/usb_storage.c index ca9f150..195a7c3 100644 --- a/firmware/usbstack/usb_storage.c +++ b/firmware/usbstack/usb_storage.c @@ -46,11 +46,12 @@ #define SECTOR_SIZE 512 -/* We can currently use up to 20k buffer size. More than that requires - * transfer chaining in the driver. Tests on sansa c200 show that the 16k - * limitation causes no more than 2% slowdown. +/* the ARC driver currently supports up to 64k USB transfers. This is + * enough for efficient mass storage support, as commonly host OSes + * don't do larger SCSI transfers anyway, so larger USB transfers + * wouldn't buy us anything. */ -#define BUFFER_SIZE 16384 +#define BUFFER_SIZE 65536 /* bulk-only class specific requests */ #define USB_BULK_RESET_REQUEST 0xff |