linux-kernel - Re: [PATCH] spi: pxa2xx: Mark expected switch fall-through

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <22e7d33d-db33-d2e4-30b1-fa87176e4277@embeddedor.com>
Date:   Wed, 3 Oct 2018 17:27:52 +0200
From:   "Gustavo A. R. Silva" <gustavo@...eddedor.com>
To:     Mark Brown <broonie@...nel.org>
Cc:     Daniel Mack <daniel@...que.org>,
        Haojian Zhuang <haojian.zhuang@...il.com>,
        Robert Jarzmik <robert.jarzmik@...e.fr>,
        linux-arm-kernel@...ts.infradead.org, linux-spi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] spi: pxa2xx: Mark expected switch fall-through



On 10/3/18 5:22 PM, Mark Brown wrote:
> On Wed, Oct 03, 2018 at 02:12:11PM +0200, Gustavo A. R. Silva wrote:
> 
>>  			switch (drv_data->n_bytes) {
>>  			case 4:
>>  				bytes_left >>= 1;
>> +				/* Fall through */
>>  			case 2:
>>  				bytes_left >>= 1;
>>  			}
> 
> I think this code is just being too cute and it'd be better to just
> rewrite it to directly do the expected number of shifts directly in each
> case and have break statements; your fix is good but still not ideal for
> readability I think.
> 

Okay. I agree. I'll rewrite and send v2.

Thanks
--
Gustavo