linux-kernel - Re: [PATCH 3/3] mtd: nand: add NAND driver for Broadcom STB NAND controller

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Message-ID: <CACna6rzL2=aUjvDw0ccRCBd1tu2QOavZf15CiZfZeimMDoWEGw@mail.gmail.com>
Date:	Sat, 7 Mar 2015 14:21:26 +0100
From:	Rafał Miłecki <zajec5@...il.com>
To:	Brian Norris <computersforpeace@...il.com>
Cc:	"linux-mtd@...ts.infradead.org" <linux-mtd@...ts.infradead.org>,
	Dmitry Torokhov <dtor@...gle.com>,
	Anatol Pomazao <anatol@...gle.com>,
	Ray Jui <rjui@...adcom.com>,
	Corneliu Doban <cdoban@...adcom.com>,
	Jonathan Richardson <jonathar@...adcom.com>,
	Florian Fainelli <f.fainelli@...il.com>,
	bcm-kernel-feedback-list@...adcom.com,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Kevin Cernekee <cernekee@...il.com>
Subject: Re: [PATCH 3/3] mtd: nand: add NAND driver for Broadcom STB NAND controller

On 7 March 2015 at 02:18, Brian Norris <computersforpeace@...il.com> wrote:
> +       /* NAND register range */
> +       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> +       ctrl->nand_base = devm_ioremap_resource(dev, res);
> +       if (!ctrl->nand_base)
> +               return -ENODEV;

This is what I got during my first test:
brcmstb_nand 11315e0.nand: can't request region for resource [mem
0x011315e0-0x011325df]
Unable to handle kernel paging request at virtual address fffffff0
(not sure why yet).

Hint: devm_ioremap_resource does never return NULL
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