linux-kernel - Re: [PATCH -mm 1/2] 3c59x: Fix uninitialized variable bug

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Message-ID: <20070904081602.GB4241@newton.mathematik.tu-chemnitz.de>
Date:	Tue, 4 Sep 2007 10:16:02 +0200
From:	Steffen Klassert <klassert@...hematik.tu-chemnitz.de>
To:	Satyam Sharma <satyam@...radead.org>
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Netdev Mailing List <netdev@...r.kernel.org>,
	Jeff Garzik <jeff@...zik.org>,
	Mark Hindley <mark@...dley.org.uk>
Subject: Re: [PATCH -mm 1/2] 3c59x: Fix uninitialized variable bug

On Tue, Sep 04, 2007 at 03:45:55AM +0530, Satyam Sharma wrote:
> 
> drivers/net/3c59x.c: In function 'vortex_up':
> drivers/net/3c59x.c:1495: warning: 'err' may be used uninitialized in this function

This came in with the recently applied 3c59x-check-return-of-pci_enable_device patch
from Mark Hindley. I just compiled it on a PCI only machine so far, therefore I did
not notice the warning yet.

> 
> is a genuine bug. The function returns an uninitialized value of 'err'
> back to the caller, which expects it to be 0 for success cases. Let's
> fix this by explicitly initializing 'err' to zero.
> 
> Signed-off-by: Satyam Sharma <satyam@...radead.org>
Acked-by: Steffen Klassert <klassert@...hematik.tu-chemnitz.de>
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