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authorJohan Hovold <jhovold@gmail.com>2010-03-17 23:00:38 +0100
committerGreg Kroah-Hartman <gregkh@suse.de>2010-05-20 13:21:33 -0700
commitd4e598f65de351eb66a90889d9ceaaca472fda40 (patch)
tree54a58fb0973a1e65b7e28fde4b98eb451db2c93b /drivers/usb/serial/cp210x.c
parentbbcb2b907415a90334521a31a8767cd77462c716 (diff)
downloadvexpress-lsk-d4e598f65de351eb66a90889d9ceaaca472fda40.tar.gz
USB: cp210x: increase the bulk-out buffer size to 256 byte
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> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/serial/cp210x.c')
-rw-r--r--drivers/usb/serial/cp210x.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index ec9b0449ccf..e3440003810 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,