linux-kernel - Re: [PATCH] mtd: cfi: allow building spi-intel standalone

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Date:   Tue, 20 Dec 2022 07:51:38 +0200
From:   Tudor Ambarus <tudor.ambarus@...aro.org>
To:     Tokunori Ikegami <ikegami.t@...il.com>,
        Arnd Bergmann <arnd@...nel.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>
Cc:     Arnd Bergmann <arnd@...db.de>, Lee Jones <lee.jones@...aro.org>,
        Mauro Lima <mauro.lima@...ypsium.com>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] mtd: cfi: allow building spi-intel standalone



On 19.12.2022 17:12, Tokunori Ikegami wrote:
> 
> On 2022/12/16 1:39, Arnd Bergmann wrote:
>> From: Arnd Bergmann<arnd@...db.de>
>>
>> When MTD or MTD_CFI_GEOMETRY is disabled, the spi-intel driver
>> fails to build, as it includes the shared CFI header:
> The header file linux/mtd/cfi.h is included by the head file 
> linux/mtd/spi-nor.h so seems the warning caused.
> Is it really necessary to inculude linux/mtd/cfi.h from 
> linux/mtd/spi-nor.h?
> (It seems that it can be resolved the issue by removing the including 
> cfi.h from spi-nor.h if unnecessary.)

SPI NOR does not depend on CFI. cfi.h shouldn't be included by
spi-nor.h, indeed.

Cheers,
ta