linux-kernel - Re: [PATCH] device_for_each_child(): kill pointless warning noise

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Message-Id: <20060927184200.7d7b9cc2.akpm@osdl.org>
Date:	Wed, 27 Sep 2006 18:42:00 -0700
From:	Andrew Morton <akpm@...l.org>
To:	Jeff Garzik <jeff@...zik.org>
Cc:	LKML <linux-kernel@...r.kernel.org>, Greg KH <greg@...ah.com>,
	Linus Torvalds <torvalds@...l.org>
Subject: Re: [PATCH] device_for_each_child(): kill pointless warning noise

On Wed, 27 Sep 2006 21:05:18 -0400
Jeff Garzik <jeff@...zik.org> wrote:

> As the last patch demonstrated, it is quite valid for a caller to ignore
> the return value of device_for_each_child(), given that the return value
> is wholly dependent on the actor -- which in practice often has a
> hardcoded return value.

Yes, but almost all of the instances which you found are flat-out *wrong*. 
They're returning 0 or 1 at random places in the callchain because they're
calling intermediate void-returning functions which are themselves dropping
error codes on the floor instead of returning them.

Let no error go unhandled!
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