linux-kernel - [PATCH 3.16 345/346] PM / devfreq: Fix incorrect type issue.

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Date:   Mon, 14 Nov 2016 00:14:21 +0000
From:   Ben Hutchings <ben@...adent.org.uk>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
CC:     akpm@...ux-foundation.org, "Xiaolong Ye" <yexl@...vell.com>,
        "MyungJoo Ham" <myungjoo.ham@...sung.com>,
        "Kevin Liu" <kliu5@...vell.com>
Subject: [PATCH 3.16 345/346] PM / devfreq: Fix incorrect type issue.

3.16.39-rc1 review patch.  If anyone has any objections, please let me know.

------------------

From: Xiaolong Ye <yexl@...vell.com>

commit 5f25f066f75a67835abb5e400471a27abd09395b upstream.

time_in_state in struct devfreq is defined as unsigned long, so
devm_kzalloc should use sizeof(unsigned long) as argument instead
of sizeof(unsigned int), otherwise it will cause unexpected result
in 64bit system.

Signed-off-by: Xiaolong Ye <yexl@...vell.com>
Signed-off-by: Kevin Liu <kliu5@...vell.com>
Signed-off-by: MyungJoo Ham <myungjoo.ham@...sung.com>
Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
---
 drivers/devfreq/devfreq.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/devfreq/devfreq.c
+++ b/drivers/devfreq/devfreq.c
@@ -483,7 +483,7 @@ struct devfreq *devfreq_add_device(struc
 						devfreq->profile->max_state *
 						devfreq->profile->max_state,
 						GFP_KERNEL);
-	devfreq->time_in_state = devm_kzalloc(dev, sizeof(unsigned int) *
+	devfreq->time_in_state = devm_kzalloc(dev, sizeof(unsigned long) *
 						devfreq->profile->max_state,
 						GFP_KERNEL);
 	devfreq->last_stat_updated = jiffies;