linux-kernel - Fwd: [PATCH] drivers/regulator/twl-*: bettet set NUL after free

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Date:	Mon, 04 Feb 2013 10:55:54 +0800
From:	Chen Gang <gang.chen@...anux.com>
To:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	lrg@...com, broonie@...nsource.wolfsonmicro.com,
	Peter Ujfalusi <peter.ujfalusi@...com>,
	Tony Lindgren <tony@...mide.com>
Subject: Fwd: [PATCH] drivers/regulator/twl-*: bettet set NUL after free


 oh, sorry, not sent to mailing-list, originally.
   (this patch should send to public kernel mailing list)

-------- 原始消息 --------
主题: [PATCH] drivers/regulator/twl-*: bettet set NUL after free
日期: Mon, 04 Feb 2013 10:52:30 +0800
发件人: Chen Gang <gang.chen@...anux.com>
收件人: lrg@...com, broonie@...nsource.wolfsonmicro.com,  Peter Ujfalusi <peter.ujfalusi@...com>, Tony Lindgren <tony@...mide.com>


  in .remove function, better to set NUL after free,  just like others.
    in drivers/power/twl4030_charger.c, has already set NULL after free.
    in drivers/input/keyboard/twl4030_keypad.c, has already set NUL after free.

additional info:
  maybe this is not a bug, only for beautify code (can treat it as minor patch)

Signed-off-by: Chen Gang <gang.chen@...anux.com>
---
 drivers/regulator/twl-regulator.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/regulator/twl-regulator.c b/drivers/regulator/twl-regulator.c
index 74508cc..a9ab46a 100644
--- a/drivers/regulator/twl-regulator.c
+++ b/drivers/regulator/twl-regulator.c
@@ -1247,6 +1247,7 @@ static int twlreg_remove(struct platform_device *pdev)
 	struct twlreg_info *info = rdev->reg_data;
 
 	regulator_unregister(rdev);
+	platform_set_drvdata(pdev, NULL);
 	kfree(info);
 	return 0;
 }
-- 
1.7.7.6


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