From: Johan Hovold <jhovold@xxxxxxxxx>
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@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>
---
drivers/usb/serial/visor.c | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
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,
--
1.7.1
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