From 3c75efaf9b3cf25a70d4474778d3b8e4ceaf297d Mon Sep 17 00:00:00 2001
From: Abir Ghosh <abirg@codeaurora.org>
Date: Tue, 11 Apr 2017 10:10:23 +0530
Subject: [PATCH] qbt1000: Initialize drvdata structure before usage

Fix uninitialized local variable error which might have lead to
crash.

CRs-Fixed: 2030137
Change-Id: I3fd95cb343c3175e4190c8ebfe209399db0602a6
Signed-off-by: Abir Ghosh <abirg@codeaurora.org>
Signed-off-by: Kota Priyanka <kotap@codeaurora.org>
---
 drivers/soc/qcom/qbt1000.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/soc/qcom/qbt1000.c b/drivers/soc/qcom/qbt1000.c
index b9e94b5d61dd..4e7b759ac810 100644
--- a/drivers/soc/qcom/qbt1000.c
+++ b/drivers/soc/qcom/qbt1000.c
@@ -318,6 +318,12 @@ static long qbt1000_ioctl(
 
 	drvdata = file->private_data;
 
+	if (IS_ERR(priv_arg)) {
+		dev_err(drvdata->dev, "%s: invalid user space pointer %lu\n",
+			__func__, arg);
+		return -EINVAL;
+	}
+
 	mutex_lock(&drvdata->mutex);
 
 	pr_debug("%s %d\n", __func__, cmd);