From: Sricharan R <sricharan@codeaurora.org>
Date: Fri, 10 Jun 2016 18:08:20 +0000 (+0530)
Subject: i2c: qup: Fix wrong value of index variable
X-Git-Tag: v4.6.6~11
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f5be1dff829038ff2225238291c67fdeb7caa0c9;p=thirdparty%2Fkernel%2Fstable.git

i2c: qup: Fix wrong value of index variable

commit d4f56c7773483b8829e89cfc739b7a5a071f6da0 upstream.

index gets incremented during check to determine if the
messages can be transferred with dma. But not reset after
that, resulting in wrong start value in subsequent loop,
causing failure. Fix it.

Signed-off-by: Sricharan R <sricharan@codeaurora.org>
Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/i2c/busses/i2c-qup.c b/drivers/i2c/busses/i2c-qup.c
index 23eaabb19f961..a5eb09c5539f5 100644
--- a/drivers/i2c/busses/i2c-qup.c
+++ b/drivers/i2c/busses/i2c-qup.c
@@ -1268,6 +1268,8 @@ static int qup_i2c_xfer_v2(struct i2c_adapter *adap,
 		}
 	}
 
+	idx = 0;
+
 	do {
 		if (msgs[idx].len == 0) {
 			ret = -EINVAL;