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Message-ID: <b97bf565-bef5-fbc7-63c5-f174880ad9ab@gmail.com>
Date: Mon, 1 Jul 2024 19:14:04 +0300
From: Sergei Shtylyov <sergei.shtylyov@...il.com>
To: Marco Felsch <m.felsch@...gutronix.de>,
 Miquel Raynal <miquel.raynal@...tlin.com>,
 Richard Weinberger <richard@....at>, Vignesh Raghavendra <vigneshr@...com>,
 Arnd Bergmann <arnd@...db.de>,
 Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
 Bartosz Golaszewski <brgl@...ev.pl>, Russell King <linux@...linux.org.uk>,
 Joel Stanley <joel@....id.au>, Andrew Jeffery <andrew@...econstruct.com.au>,
 Nicolas Ferre <nicolas.ferre@...rochip.com>,
 Alexandre Belloni <alexandre.belloni@...tlin.com>,
 Claudiu Beznea <claudiu.beznea@...on.dev>, Shawn Guo <shawnguo@...nel.org>,
 Sascha Hauer <s.hauer@...gutronix.de>,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>, Vladimir Zapolskiy <vz@...ia.com>,
 Andrew Lunn <andrew@...n.ch>, Gregory Clement <gregory.clement@...tlin.com>,
 Sebastian Hesselbarth <sebastian.hesselbarth@...il.com>,
 Tony Lindgren <tony@...mide.com>,
 Geert Uytterhoeven <geert+renesas@...der.be>,
 Magnus Damm <magnus.damm@...il.com>, Dinh Nguyen <dinguyen@...nel.org>,
 Thierry Reding <thierry.reding@...il.com>,
 Jonathan Hunter <jonathanh@...dia.com>,
 Jonathan Neuschäfer <j.neuschaefer@....net>,
 Michael Ellerman <mpe@...erman.id.au>, Nicholas Piggin <npiggin@...il.com>,
 Christophe Leroy <christophe.leroy@...roup.eu>,
 "Naveen N. Rao" <naveen.n.rao@...ux.ibm.com>,
 Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
 Huacai Chen <chenhuacai@...nel.org>, WANG Xuerui <kernel@...0n.name>
Cc: linux-mtd@...ts.infradead.org, linux-kernel@...r.kernel.org,
 linux-i2c@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-aspeed@...ts.ozlabs.org, imx@...ts.linux.dev,
 linux-omap@...r.kernel.org, linux-renesas-soc@...r.kernel.org,
 linux-tegra@...r.kernel.org, openbmc@...ts.ozlabs.org,
 linuxppc-dev@...ts.ozlabs.org, linux-mips@...r.kernel.org,
 loongarch@...ts.linux.dev
Subject: Re: [PATCH 2/9] mtd: add mtd_is_master helper

On 7/1/24 4:53 PM, Marco Felsch wrote:

> Provide a simple helper to make it easy to detect an master mtd device.
> 
> Signed-off-by: Marco Felsch <m.felsch@...gutronix.de>
> ---
>  include/linux/mtd/mtd.h | 5 +++++
>  1 file changed, 5 insertions(+)
> 
> diff --git a/include/linux/mtd/mtd.h b/include/linux/mtd/mtd.h
> index 8d10d9d2e830..bf3fc2ea7230 100644
> --- a/include/linux/mtd/mtd.h
> +++ b/include/linux/mtd/mtd.h
> @@ -408,6 +408,11 @@ static inline struct mtd_info *mtd_get_master(struct mtd_info *mtd)
>  	return mtd;
>  }
>  
> +static inline bool mtd_is_master(struct mtd_info *mtd)
> +{
> +	return mtd->parent ? false : true;

   Perhaps:

	return !mtd->parent;

[...]

MBR, Sergey

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