From mboxrd@z Thu Jan 1 00:00:00 1970 From: Brian Norris Subject: Re: [PATCH 3/3] mtd: nand: add NAND driver for Broadcom STB NAND controller Date: Mon, 9 Mar 2015 10:31:31 -0700 Message-ID: <20150309173131.GT18140@ld-irv-0074> References: <1425691129-1150-1-git-send-email-computersforpeace@gmail.com> <1425691129-1150-4-git-send-email-computersforpeace@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Content-Disposition: inline In-Reply-To: Sender: linux-kernel-owner@vger.kernel.org To: =?utf-8?B?UmFmYcWCIE1pxYJlY2tp?= Cc: "linux-mtd@lists.infradead.org" , Dmitry Torokhov , Anatol Pomazao , Ray Jui , Corneliu Doban , Jonathan Richardson , Florian Fainelli , bcm-kernel-feedback-list@broadcom.com, "devicetree@vger.kernel.org" , Linux Kernel Mailing List , Kevin Cernekee , sbranden@broadcom.com List-Id: devicetree@vger.kernel.org On Sat, Mar 07, 2015 at 02:21:26PM +0100, Rafa=C5=82 Mi=C5=82ecki wrote= : > On 7 March 2015 at 02:18, Brian Norris = wrote: > > + /* NAND register range */ > > + res =3D platform_get_resource(pdev, IORESOURCE_MEM, 0); > > + ctrl->nand_base =3D devm_ioremap_resource(dev, res); > > + if (!ctrl->nand_base) > > + return -ENODEV; >=20 > 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). >=20 > Hint: devm_ioremap_resource does never return NULL Thanks, fixed in 3 places. I expect you've figured out your problem here by now. Brian