linux-kernel - Re: [PATCH] [v2] mtd: cfi: allow building spi-intel standalone

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Date:   Thu, 22 Dec 2022 01:47:54 +0900
From:   Tokunori Ikegami <ikegami.t@...il.com>
To:     Arnd Bergmann <arnd@...nel.org>,
        Tudor Ambarus <tudor.ambarus@...rochip.com>,
        Pratyush Yadav <pratyush@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>, Michael Walle <michael@...le.cc>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Takahiro Kuwano <Takahiro.Kuwano@...ineon.com>,
        Sai Krishna Potthuri <sai.krishna.potthuri@....com>,
        Boris Brezillon <boris.brezillon@...labora.com>,
        Mauro Lima <mauro.lima@...ypsium.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] [v2] mtd: cfi: allow building spi-intel standalone


On 2022/12/20 23:13, 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:
>
> include/linux/mtd/cfi.h:62:2: error: #warning No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work. [-Werror=cpp]
>     62 | #warning No CONFIG_MTD_CFI_Ix selected. No NOR chip support can work.
>
> linux/mtd/spi-nor.h does not actually need to include cfi.h, so
> remove the inclusion here to fix the warning. This uncovers a
> missing #include in spi-nor/core.c so add that there to
> prevent a different build issue.
Reviewed-by: Tokunori Ikegami <ikegami.t@...il.com>
>
> Fixes: e23e5a05d1fd ("mtd: spi-nor: intel-spi: Convert to SPI MEM")
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> Reviewed-by: Mika Westerberg <mika.westerberg@...ux.intel.com>
> ---
>   drivers/mtd/spi-nor/core.c  | 1 +
>   include/linux/mtd/spi-nor.h | 1 -
>   2 files changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/mtd/spi-nor/core.c b/drivers/mtd/spi-nor/core.c
> index d8703d7dfd0a..d67c926bca8b 100644
> --- a/drivers/mtd/spi-nor/core.c
> +++ b/drivers/mtd/spi-nor/core.c
> @@ -10,6 +10,7 @@
>   #include <linux/err.h>
>   #include <linux/errno.h>
>   #include <linux/module.h>
> +#include <linux/delay.h>
>   #include <linux/device.h>
>   #include <linux/mutex.h>
>   #include <linux/math64.h>
> diff --git a/include/linux/mtd/spi-nor.h b/include/linux/mtd/spi-nor.h
> index 25765556223a..a3f8cdca90c8 100644
> --- a/include/linux/mtd/spi-nor.h
> +++ b/include/linux/mtd/spi-nor.h
> @@ -7,7 +7,6 @@
>   #define __LINUX_MTD_SPI_NOR_H
>   
>   #include <linux/bitops.h>
> -#include <linux/mtd/cfi.h>
>   #include <linux/mtd/mtd.h>
>   #include <linux/spi/spi-mem.h>
>