From c073b06b992c3f343d2367c5103e1d415d49f847 Mon Sep 17 00:00:00 2001
From: xiaojin <jin.xiao@intel.com>
Date: Wed, 19 Dec 2012 11:53:43 +0800
Subject: [PATCH] --- yaml --- r: 354748 b: refs/heads/master c:
 f96f7f7f39af53274d98aa9c29d6fa4d122218a4 h: refs/heads/master v: v3

---
 [refs]                    | 2 +-
 trunk/drivers/tty/n_gsm.c | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/[refs] b/[refs]
index ccbb72d33f2a..a7a26939ad19 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 5425e03f97d1e5847372aae0b895d8d1c9bf2741
+refs/heads/master: f96f7f7f39af53274d98aa9c29d6fa4d122218a4
diff --git a/trunk/drivers/tty/n_gsm.c b/trunk/drivers/tty/n_gsm.c
index dcc0430a49c8..4572117988f8 100644
--- a/trunk/drivers/tty/n_gsm.c
+++ b/trunk/drivers/tty/n_gsm.c
@@ -573,6 +573,7 @@ static void gsm_send(struct gsm_mux *gsm, int addr, int cr, int control)
 	int len;
 	u8 cbuf[10];
 	u8 ibuf[3];
+	unsigned long flags;
 
 	switch (gsm->encoding) {
 	case 0:
@@ -602,7 +603,9 @@ static void gsm_send(struct gsm_mux *gsm, int addr, int cr, int control)
 		WARN_ON(1);
 		return;
 	}
+	spin_lock_irqsave(&gsm->tx_lock, flags);
 	gsm->output(gsm, cbuf, len);
+	spin_unlock_irqrestore(&gsm->tx_lock, flags);
 	gsm_print_packet("-->", addr, cr, control, NULL, 0);
 }