linux-kernel - Re: [PATCH v2] powerpc/fsl-85xx: fix compile error

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Date:   Fri, 13 Mar 2020 20:24:20 +0100
From:   Christophe Leroy <christophe.leroy@....fr>
To:     王文虎 <wenhu.wang@...o.com>
Cc:     Benjamin Herrenschmidt <benh@...nel.crashing.org>,
        Paul Mackerras <paulus@...ba.org>,
        Michael Ellerman <mpe@...erman.id.au>,
        Richard Fontana <rfontana@...hat.com>,
        Kate Stewart <kstewart@...uxfoundation.org>,
        Allison Randal <allison@...utok.net>,
        Thomas Gleixner <tglx@...utronix.de>,
        linuxppc-dev@...ts.ozlabs.org, linux-kernel@...r.kernel.org,
        kernel@...o.com, trivial@...nel.org
Subject: Re: [PATCH v2] powerpc/fsl-85xx: fix compile error



Le 13/03/2020 à 19:17, 王文虎 a écrit :
> 发件人：Christophe Leroy <christophe.leroy@....fr>
> 发送日期：2020-03-14 01:45:11
> 收件人：WANG Wenhu <wenhu.wang@...o.com>,Benjamin Herrenschmidt <benh@...nel.crashing.org>,Paul Mackerras <paulus@...ba.org>,Michael Ellerman <mpe@...erman.id.au>,Richard Fontana <rfontana@...hat.com>,Kate Stewart <kstewart@...uxfoundation.org>,Allison Randal <allison@...utok.net>,Thomas Gleixner <tglx@...utronix.de>,linuxppc-dev@...ts.ozlabs.org,linux-kernel@...r.kernel.org
> 抄送人：kernel@...o.com,trivial@...nel.org
> 主题：Re: [PATCH v2] powerpc/fsl-85xx: fix compile error>
>>
>> Le 13/03/2020 à 18:19, WANG Wenhu a écrit :
>>> Include "linux/of_address.h" to fix the compile error for
>>> mpc85xx_l2ctlr_of_probe() when compiling fsl_85xx_cache_sram.c.
>>>
>>>     CC      arch/powerpc/sysdev/fsl_85xx_l2ctlr.o
>>> arch/powerpc/sysdev/fsl_85xx_l2ctlr.c: In function ‘mpc85xx_l2ctlr_of_probe’:
>>> arch/powerpc/sysdev/fsl_85xx_l2ctlr.c:90:11: error: implicit declaration of function ‘of_iomap’; did you mean ‘pci_iomap’? [-Werror=implicit-function-declaration]
>>>     l2ctlr = of_iomap(dev->dev.of_node, 0);
>>>              ^~~~~~~~
>>>              pci_iomap
>>> arch/powerpc/sysdev/fsl_85xx_l2ctlr.c:90:9: error: assignment makes pointer from integer without a cast [-Werror=int-conversion]
>>>     l2ctlr = of_iomap(dev->dev.of_node, 0);
>>>            ^
>>> cc1: all warnings being treated as errors
>>> scripts/Makefile.build:267: recipe for target 'arch/powerpc/sysdev/fsl_85xx_l2ctlr.o' failed
>>> make[2]: *** [arch/powerpc/sysdev/fsl_85xx_l2ctlr.o] Error 1
>>>
>>> Fixes: commit 6db92cc9d07d ("powerpc/85xx: add cache-sram support")
>>
>> Shouldn't you Cc stable as well ?
> Pretty sure if it makes a difference(that I did not recognize).
> Does the inconsistency of Cc lead to a failure on classification
> or something else which may confuse you?

See 
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/tree/Documentation/process/submitting-patches.rst?h=v5.1.9#n299

>>
>>> Signed-off-by: WANG Wenhu <wenhu.wang@...o.com>
>>> ---
>>
>> What's the difference between v1 and v2 ?
> The label field modification: "Fixed" -> "Fixes", which now is
> identified successfully. Really sorry for the fault on v1.

Ok. Usually people tell here (just below the ---) what is the difference 
between the different versions. It helps people understand what the 
changes are.

Christophe