linux-kernel - Re: [PATCH] staging: fsl-mc: fix fsl_mc_is

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Message-ID: <59944AB2.6010809@nxp.com>
Date:   Wed, 16 Aug 2017 13:37:55 +0000
From:   Laurentiu Tudor <laurentiu.tudor@....com>
To:     Dan Carpenter <dan.carpenter@...cle.com>,
        Colin King <colin.king@...onical.com>
CC:     Stuart Yoder <stuyoder@...il.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Wei Yongjun <weiyongjun1@...wei.com>,
        "devel@...verdev.osuosl.org" <devel@...verdev.osuosl.org>,
        "kernel-janitors@...r.kernel.org" <kernel-janitors@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] staging: fsl-mc: fix fsl_mc_is_allocatable strcmps

On 08/16/2017 03:06 PM, Dan Carpenter wrote:
> On Wed, Aug 16, 2017 at 12:44:51PM +0100, Colin King wrote:
>> From: Colin Ian King <colin.king@...onical.com>
>>
>> The previous fix removed the equal to zero comparisons by the strcmps and
>> now the function always returns true. Fix this by adding in the missing
>> logical negation operators.
>>
>> Detected by CoverityScan, CID#1452267 ("Constant expression result")
>>
>> Fixes: b93ad9a067e1 ("staging: fsl-mc: be consistent when checking strcmp() return")

Thanks Colin (and Coverity) for catching this!

> Ugh...  I did review the original patch at all.  Sorry.

As a side note, funny how i got the patch description right but not the 
actual patch. :-)

> It's better to use "== 0" because it's idiomatic.

Agree, plus this approach would be consistent with the rest of the 
driver (except one place in drivers/staging/fsl-mc/bus/dprc-driver.c +32)

---
Best Regards, Laurentiu