USB: cp210x: increase bulk-in buffer size to 256 byte

The cp210x requires a bulk-in buffer larger than endpoint size to keep
up at high baudrates without loosing data.

Signed-off-by: Johan Hovold <jhovold@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

diff --git a/drivers/usb/serial/cp210x.c b/drivers/usb/serial/cp210x.c
index e3440003810e4b8ddd73376b9cdd9f9540d14e50..705a7e7a97466a9590b88ed835d94864db3ebb80 100644 (file)
--- 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_in_size           = 256,
        .bulk_out_size          = 256,
        .open                   = cp210x_open,
        .close                  = cp210x_close,