[PATCH 2/4] n_gsm: Fix length handling

[Alan Cox <alan@lxorguk.ukuu.org.uk>]

From: Ken Mills <ken.k.mills@intel.com>

If the mux is configured with a large mru/mtu the existing code gets the
byte ordering wrong for the header.

Signed-off-by: Ken Mills <ken.k.mills@intel.com>
Signed-off-by: Alan Cox <alan@linux.intel.com>
---

 drivers/char/n_gsm.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)


diff --git a/drivers/char/n_gsm.c b/drivers/char/n_gsm.c
index 7f79044..81b4658 100644
--- a/drivers/char/n_gsm.c
+++ b/drivers/char/n_gsm.c
@@ -716,8 +716,8 @@ static void __gsm_data_queue(struct gsm_dlci *dlci, struct gsm_msg *msg)
 		if (msg->len < 128)
 			*--dp = (msg->len << 1) | EA;
 		else {
-			*--dp = (msg->len >> 6) | EA;
-			*--dp = (msg->len & 127) << 1;
+			*--dp = ((msg->len & 127) << 1) | EA;
+			*--dp = (msg->len >> 6) & 0xfe;
 		}
 	}