net: cdc_ncm: fix SET_MAX_DATAGRAM_SIZE
We need to inform the device about the *new* value, not the
old one.
Cc: Alexey Orishko <alexey.orishko@gmail.com>
Signed-off-by: Bjørn Mork <bjorn@mork.no>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/usb/cdc_ncm.c b/drivers/net/usb/cdc_ncm.c
index 4de3a542..b8de8dd 100644
--- a/drivers/net/usb/cdc_ncm.c
+++ b/drivers/net/usb/cdc_ncm.c
@@ -280,6 +280,7 @@
/* if value changed, update device */
if (ctx->max_datagram_size !=
le16_to_cpu(max_datagram_size)) {
+ max_datagram_size = cpu_to_le16(ctx->max_datagram_size);
err = usbnet_write_cmd(dev,
USB_CDC_SET_MAX_DATAGRAM_SIZE,
USB_TYPE_CLASS | USB_DIR_OUT
