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 <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 3 insertions, 0 deletions

diff --git a/drivers/usb/serial/visor.c b/drivers/usb/serial/visor.c
index 17fd8822d07f..eb76aaef4268 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,