linux-kernel - Re: [PATCH] edd: fix possible memory leak in edd

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Message-Id: <20100712182910.7b69b493.akpm@linux-foundation.org>
Date:	Mon, 12 Jul 2010 18:29:10 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	axel.lin@...il.com
Cc:	linux-kernel <linux-kernel@...r.kernel.org>,
	Stephen Hemminger <shemminger@...tta.com>,
	Jens Axboe <jens.axboe@...cle.com>,
	David Teigland <teigland@...hat.com>,
	Pekka Enberg <penberg@...helsinki.fi>,
	"Hans J. Koch" <hjk@...utronix.de>
Subject: Re: [PATCH] edd: fix possible memory leak in edd_init() error path

On Tue, 13 Jul 2010 09:17:58 +0800 Axel Lin <axel.lin@...il.com> wrote:

> >> +
> >> +out:
> >> + __ __ while (--i >= 0) {
> >> + __ __ __ __ __ __ edev = edd_devices[i];
> >> + __ __ __ __ __ __ if (edev)
> >
> > This test is unneeded?
> 
> right. a revised version is on the way.

I already did the below, which you were cc'ed on?

--- a/drivers/firmware/edd.c~edd-fix-possible-memory-leak-in-edd_init-error-path-fix
+++ a/drivers/firmware/edd.c
@@ -778,11 +778,8 @@ edd_init(void)
 	return 0;
 
 out:
-	while (--i >= 0) {
-		edev = edd_devices[i];
-		if (edev)
-			edd_device_unregister(edev);
-	}
+	while (--i >= 0)
+		edd_device_unregister(edd_devices[i]);
 	kset_unregister(edd_kset);
 	return rc;
 }
_

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