From patchwork Thu Sep 6 22:38:33 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris Brezillon X-Patchwork-Id: 10591189 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DEDA7920 for ; Thu, 6 Sep 2018 22:38:58 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CD6BA2AF3B for ; Thu, 6 Sep 2018 22:38:58 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C0B292AF44; Thu, 6 Sep 2018 22:38:58 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 709232AF42 for ; Thu, 6 Sep 2018 22:38:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727640AbeIGDQh (ORCPT ); Thu, 6 Sep 2018 23:16:37 -0400 Received: from mail.bootlin.com ([62.4.15.54]:45368 "EHLO mail.bootlin.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728943AbeIGDQh (ORCPT ); Thu, 6 Sep 2018 23:16:37 -0400 Received: by mail.bootlin.com (Postfix, from userid 110) id 17FEF20877; Fri, 7 Sep 2018 00:38:56 +0200 (CEST) Received: from localhost.localdomain (91-160-177-164.subs.proxad.net [91.160.177.164]) by mail.bootlin.com (Postfix) with ESMTPSA id 77799207AD; Fri, 7 Sep 2018 00:38:55 +0200 (CEST) From: Boris Brezillon To: Boris Brezillon , Richard Weinberger , Miquel Raynal , linux-mtd@lists.infradead.org Cc: David Woodhouse , Brian Norris , Marek Vasut , Jonathan Corbet , linux-doc@vger.kernel.org, Hartley Sweeten , Ryan Mallon , Alexander Shiyan , Shawn Guo , Sascha Hauer , Fabio Estevam , NXP Linux Team , Imre Kaloz , Krzysztof Halasa , Tony Lindgren , linux-omap@vger.kernel.org, Alexander Clouter , Thomas Petazzoni , Gregory CLEMENT , Jason Cooper , Sebastian Hesselbarth , Andrew Lunn , Daniel Mack , Haojian Zhuang , Robert Jarzmik , Ralf Baechle , linux-mips@linux-mips.org, Yoshinori Sato , Rich Felker , linux-sh@vger.kernel.org, Greg Kroah-Hartman , devel@driverdev.osuosl.org Subject: [PATCH 01/19] mtd: rawnand: Leave chip->IO_ADDR_{R,W} to NULL when unused Date: Fri, 7 Sep 2018 00:38:33 +0200 Message-Id: <20180906223851.6964-2-boris.brezillon@bootlin.com> X-Mailer: git-send-email 2.14.1 In-Reply-To: <20180906223851.6964-1-boris.brezillon@bootlin.com> References: <20180906223851.6964-1-boris.brezillon@bootlin.com> Sender: linux-sh-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-sh@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP There's no point in poisoning the ->IO_ADDR_{R,W}, a NULL pointer is just as good to detect unexpected ->IO_ADDR_{R,W} usage. Signed-off-by: Boris Brezillon --- drivers/mtd/nand/raw/brcmnand/brcmnand.c | 3 --- drivers/mtd/nand/raw/socrates_nand.c | 4 ---- 2 files changed, 7 deletions(-) diff --git a/drivers/mtd/nand/raw/brcmnand/brcmnand.c b/drivers/mtd/nand/raw/brcmnand/brcmnand.c index fee40a3ce5d2..851db4a7d3e4 100644 --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c @@ -2270,9 +2270,6 @@ static int brcmnand_init_cs(struct brcmnand_host *host, struct device_node *dn) mtd->owner = THIS_MODULE; mtd->dev.parent = &pdev->dev; - chip->IO_ADDR_R = (void __iomem *)0xdeadbeef; - chip->IO_ADDR_W = (void __iomem *)0xdeadbeef; - chip->cmd_ctrl = brcmnand_cmd_ctrl; chip->cmdfunc = brcmnand_cmdfunc; chip->waitfunc = brcmnand_waitfunc; diff --git a/drivers/mtd/nand/raw/socrates_nand.c b/drivers/mtd/nand/raw/socrates_nand.c index 64ea9a014054..aa42b4ea4d23 100644 --- a/drivers/mtd/nand/raw/socrates_nand.c +++ b/drivers/mtd/nand/raw/socrates_nand.c @@ -152,10 +152,6 @@ static int socrates_nand_probe(struct platform_device *ofdev) mtd->name = "socrates_nand"; mtd->dev.parent = &ofdev->dev; - /*should never be accessed directly */ - nand_chip->IO_ADDR_R = (void *)0xdeadbeef; - nand_chip->IO_ADDR_W = (void *)0xdeadbeef; - nand_chip->cmd_ctrl = socrates_nand_cmd_ctrl; nand_chip->read_byte = socrates_nand_read_byte; nand_chip->write_buf = socrates_nand_write_buf;