From aaee24accb9e374c04eb9672d5324160626462c5 Mon Sep 17 00:00:00 2001
From: Mark Greer <mgreer@animalcreek.com>
Date: Wed, 19 Aug 2015 08:58:52 -0700
Subject: [PATCH] NFC: trf7970a: Add NULL check to clear up smatch warning

Although it should be unnecessary, add a NULL pointer check
to trf7970a_send_upstream() to eliminate a smatch warning.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Mark Greer <mgreer@animalcreek.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
---
 drivers/nfc/trf7970a.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/nfc/trf7970a.c b/drivers/nfc/trf7970a.c
index 08f23d75700e..70b0707fd9a9 100644
--- a/drivers/nfc/trf7970a.c
+++ b/drivers/nfc/trf7970a.c
@@ -629,7 +629,9 @@ static void trf7970a_send_upstream(struct trf7970a *trf)
 	}
 
 	if (trf->adjust_resp_len) {
-		skb_trim(trf->rx_skb, trf->rx_skb->len - 1);
+		if (trf->rx_skb)
+			skb_trim(trf->rx_skb, trf->rx_skb->len - 1);
+
 		trf->adjust_resp_len = false;
 	}