From 9a1f298f8bc92f21b09bd7ef396c2fc6544ce9aa Mon Sep 17 00:00:00 2001 From: Johan Hovold Date: Sun, 16 May 2010 15:06:55 +0200 Subject: [PATCH] USB: visor: increase bulk-out buffer size Increase the bulk-out buffer size to avoid any regression in throughput after replacing the old writing scheme which used dynamic buffers (e.g. up to 2k). 256b has been determined to be a good choice for several drivers including ftdi_sio which used to have a more or less identical write implementation. Signed-off-by: Johan Hovold Signed-off-by: Greg Kroah-Hartman --- drivers/usb/serial/visor.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c index 17fd882..eb76aae 100644 --- a/drivers/usb/serial/visor.c +++ b/drivers/usb/serial/visor.c @@ -186,6 +186,7 @@ static struct usb_serial_driver handspring_device = { .usb_driver = &visor_driver, .id_table = id_table, .num_ports = 2, + .bulk_out_size = 256, .open = visor_open, .close = visor_close, .throttle = usb_serial_generic_throttle, @@ -206,6 +207,7 @@ static struct usb_serial_driver clie_5_device = { .usb_driver = &visor_driver, .id_table = clie_id_5_table, .num_ports = 2, + .bulk_out_size = 256, .open = visor_open, .close = visor_close, .throttle = usb_serial_generic_throttle, @@ -226,6 +228,7 @@ static struct usb_serial_driver clie_3_5_device = { .usb_driver = &visor_driver, .id_table = clie_id_3_5_table, .num_ports = 1, + .bulk_out_size = 256, .open = visor_open, .close = visor_close, .throttle = usb_serial_generic_throttle, -- 1.8.2.3