linux-kernel - Re: [PATCH] usb: host: fhci-hcd: annotate PIPE

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Message-ID: <4fa8a8e9-934d-2962-1daa-fdeea6017ea1@embeddedor.com>
Date:   Mon, 17 Feb 2020 11:12:13 -0600
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Rasmus Villemoes <linux@...musvillemoes.dk>
Cc:     Timur Tabi <timur@...nel.org>, Li Yang <leoyang.li@....com>,
        Anton Vorontsov <avorontsov@...mvista.com>,
        kbuild test robot <lkp@...el.com>, linux-usb@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] usb: host: fhci-hcd: annotate PIPE_CONTROL switch case
 with fallthrough



On 2/13/20 06:56, Greg Kroah-Hartman wrote:
> On Thu, Feb 13, 2020 at 09:54:00AM +0100, Rasmus Villemoes wrote:
>> After this was made buildable for something other than PPC32, kbuild
>> starts warning
>>
>> drivers/usb/host/fhci-hcd.c:398:8: warning: this statement may fall
>> through [-Wimplicit-fallthrough=]
>>
>> I don't know this code, but from the construction (initializing size
>> with 0 and explicitly using "size +=" in the PIPE_BULK case) I assume
>> that fallthrough is indeed intended.
>>
>> Reported-by: kbuild test robot <lkp@...el.com>
>> Fixes: 5a35435ef4e6 (soc: fsl: qe: remove PPC32 dependency from CONFIG_QUICC_ENGINE)
>> Fixes: a035d552a93b (Makefile: Globally enable fall-through warning)

By the way, the "Fixes" tag above makes no sense. There is nothing wrong about
that commit. It just enabled the fall-through warning globally. Why would you
"fix" that?

Thanks
--
Gustavo