From 9a1f298f8bc92f21b09bd7ef396c2fc6544ce9aa Mon Sep 17 00:00:00 2001
From: Johan Hovold <jhovold@gmail.com>
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 <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
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 17fd8822d07..eb76aaef426 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,
--
2.20.1