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Date: Tue, 11 Jul 2006 10:02:57 -0400
From: Alan Cox <alan@redhat.com>
To: Adrian Bunk <bunk@stusta.de>
Cc: Andrew Morton <akpm@osdl.org>, Alan Cox <alan@redhat.com>,
       linux-kernel@vger.kernel.org
Subject: Re: 2.6.18-rc1-mm1: drivers/ide/pci/jmicron.c warning
Message-ID: <20060711140257.GA6820@devserv.devel.redhat.com>
References: <20060709021106.9310d4d1.akpm@osdl.org> <20060711125258.GN13938@stusta.de>
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On Tue, Jul 11, 2006 at 02:52:58PM +0200, Adrian Bunk wrote:
>   CC      drivers/ide/pci/jmicron.o
> drivers/ide/pci/jmicron.c: In function ???ata66_jmicron???:
> drivers/ide/pci/jmicron.c:99: warning: control reaches end of non-void function

If your gcc does this please file a gcc bug report

> At least from gcc's perspective, this warning is correct, and it should 
> therefore be fixed.

No. port_type is an enum. Each enum value in question is present in the 
switch (and gcc knows this), each has a return. Your compiler is buggy.