Messages in this thread Patch in this message | | | From | Johan Hovold <> | Subject | [PATCH 2/9] USB: cp210x: increase the bulk-out buffer size to 256 byte | Date | Wed, 17 Mar 2010 23:00:38 +0100 |
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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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