linux-kernel - Re: [PATCH 1/1 linux-next] affs: add default case in switch

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Date:	Sun, 03 May 2015 20:23:27 +0200
From:	Richard Weinberger <richard@....at>
To:	Fabian Frederick <fabf@...net.be>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>
Subject: Re: [PATCH 1/1 linux-next] affs: add default case in switch

Am 03.05.2015 um 20:15 schrieb Fabian Frederick:
>> If the code can be reached you need to take a proper action of not the
>> warning is bogus.
> 
> As far as I understand, switch in affs_lookup() only updates inode number when
> it's a link so we can simply add default:break to silence gcc warning or replace
> by if().

Does the warning trigger with our default set of compiler warnings?
Not all gcc warnings are useful. :)

> affs_iget() switch on the other hand applies to any type of file.
> Maybe we could add default: BUG() to avoid working on bad inode ?

Or cancel the operation and return -EIO to userspace.

Thanks,
//richard
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