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Subject[PATCH 2/9] USB: cp210x: increase the bulk-out buffer size to 256 byte
Date
Increase the bulk-out buffer size from 64 to 256 byte.

This gives a significant increase in throughput already at 1Mbaud
(e.g. 710 instead of 640 KB/s) as well as lowered CPU usage.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
---
drivers/usb/serial/cp210x.c | 1 +
1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index ec9b044..e344000 100644
--- a/drivers/usb/serial/cp210x.c
+++ b/drivers/usb/serial/cp210x.c
@@ -138,6 +138,7 @@ static struct usb_serial_driver cp210x_device = {
.usb_driver = &cp210x_driver,
.id_table = id_table,
.num_ports = 1,
+ .bulk_out_size = 256,
.open = cp210x_open,
.close = cp210x_close,
.break_ctl = cp210x_break_ctl,
--
1.7.0.2


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