linux-kernel - Re: [PATCH v2 2/4] mtd: nand: Allow MTD_NAND

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Date:	Fri, 16 Oct 2015 18:24:21 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org
Cc:	Anup Patel <anup.patel@...adcom.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Brian Norris <computersforpeace@...il.com>,
	linux-mtd@...ts.infradead.org, Mark Rutland <mark.rutland@....com>,
	devicetree@...r.kernel.org,
	Florian Fainelli <f.fainelli@...il.com>,
	Scott Branden <sbranden@...adcom.com>,
	Pawel Moll <pawel.moll@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	linux-kernel@...r.kernel.org, Ray Jui <rjui@...adcom.com>,
	Vikram Prakash <vikramp@...adcom.com>,
	Rob Herring <robh+dt@...nel.org>,
	bcm-kernel-feedback-list@...adcom.com,
	Sandeep Tripathy <tripathy@...adcom.com>,
	Kumar Gala <galak@...eaurora.org>,
	Pramod KUMAR <pramodku@...adcom.com>
Subject: Re: [PATCH v2 2/4] mtd: nand: Allow MTD_NAND_BRCMNAND to be selected for ARM64

On Friday 16 October 2015 14:38:55 Anup Patel wrote:
> 
> diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
> index 3324281..a1b5819 100644
> --- a/drivers/mtd/nand/Kconfig
> +++ b/drivers/mtd/nand/Kconfig
> @@ -393,7 +393,7 @@ config MTD_NAND_GPMI_NAND
>  
>  config MTD_NAND_BRCMNAND
>         tristate "Broadcom STB NAND controller"
> -       depends on ARM || MIPS
> +       depends on ARM || ARM64 || MIPS
>         help
>           Enables the Broadcom NAND controller driver. The controller was
>           originally designed for Set-Top Box but is used on various BCM7xxx,
> -- 
> 

I think you also need this one:

8<-----------
>From 0ab7b2d32921b3f3da15274d8c3982ba1d54660f Mon Sep 17 00:00:00 2001
From: Arnd Bergmann <arnd@...db.de>
Date: Thu, 4 Jun 2015 09:25:59 +0200
Subject: [PATCH] mtd: brcmnand depends on MTD_NAND

MTD_NAND_BRCMNAND uses the generic nand functions, but is currently allowed
to be built without CONFIG_MTD_NAND, which results in a link error:

drivers/built-in.o: In function `brcmnand_remove':
coresight-replicator.c:(.text+0x17ae6c): undefined reference to `nand_release'
drivers/built-in.o: In function `brcmnand_probe':
coresight-replicator.c:(.text+0x17d4b4): undefined reference to `nand_scan_ident'
coresight-replicator.c:(.text+0x17d948): undefined reference to `nand_scan_tail'

This adds an explicit Kconfig dependency.

Signed-off-by: Arnd Bergmann <arnd@...db.de>

diff --git a/drivers/mtd/nand/Kconfig b/drivers/mtd/nand/Kconfig
index 289664089cf3..4b7e853ce35d 100644
--- a/drivers/mtd/nand/Kconfig
+++ b/drivers/mtd/nand/Kconfig
@@ -393,6 +393,7 @@ config MTD_NAND_GPMI_NAND
 
 config MTD_NAND_BRCMNAND
 	tristate "Broadcom STB NAND controller"
+	depends on MTD_NAND
 	depends on ARM || ARM64 || MIPS
 	help
 	  Enables the Broadcom NAND controller driver. The controller was

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