From 40e3465db2cffd64e069ca82ee981025554bc159 Mon Sep 17 00:00:00 2001
From: Ken Mills <ken.k.mills@intel.com>
Date: Thu, 4 Nov 2010 15:16:42 +0000
Subject: [PATCH] n_gsm: Fix length handling
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>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/tty/n_gsm.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/tty/n_gsm.c b/drivers/tty/n_gsm.c
index 7f79044ae996..81b46585edf7 100644
--- a/drivers/tty/n_gsm.c
+++ b/drivers/tty/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;
}
}
--
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