From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 2F649C6778A for ; Sun, 1 Jul 2018 16:17:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id DEE41250BE for ; Sun, 1 Jul 2018 16:17:15 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DEE41250BE Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=linuxfoundation.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933673AbeGAQRO (ORCPT ); Sun, 1 Jul 2018 12:17:14 -0400 Received: from mail.linuxfoundation.org ([140.211.169.12]:60970 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753289AbeGAQRL (ORCPT ); Sun, 1 Jul 2018 12:17:11 -0400 Received: from localhost (LFbn-1-12247-202.w90-92.abo.wanadoo.fr [90.92.61.202]) by mail.linuxfoundation.org (Postfix) with ESMTPSA id 7FEF849B; Sun, 1 Jul 2018 16:17:10 +0000 (UTC) From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Tokunori Ikegami , Joakim Tjernlund , Chris Packham , Brian Norris , David Woodhouse , Boris Brezillon , Marek Vasut , Richard Weinberger , Cyrille Pitchen , linux-mtd@lists.infradead.org, Boris Brezillon Subject: [PATCH 4.4 052/105] mtd: cfi_cmdset_0002: Change write buffer to check correct value Date: Sun, 1 Jul 2018 18:02:02 +0200 Message-Id: <20180701153153.235749272@linuxfoundation.org> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180701153149.382300170@linuxfoundation.org> References: <20180701153149.382300170@linuxfoundation.org> User-Agent: quilt/0.65 X-stable: review MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Tokunori Ikegami commit dfeae1073583dc35c33b32150e18b7048bbb37e6 upstream. For the word write it is checked if the chip has the correct value. But it is not checked for the write buffer as only checked if ready. To make sure for the write buffer change to check the value. It is enough as this patch is only checking the last written word. Since it is described by data sheets to check the operation status. Signed-off-by: Tokunori Ikegami Reviewed-by: Joakim Tjernlund Cc: Chris Packham Cc: Brian Norris Cc: David Woodhouse Cc: Boris Brezillon Cc: Marek Vasut Cc: Richard Weinberger Cc: Cyrille Pitchen Cc: linux-mtd@lists.infradead.org Cc: stable@vger.kernel.org Signed-off-by: Boris Brezillon Signed-off-by: Greg Kroah-Hartman --- drivers/mtd/chips/cfi_cmdset_0002.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -1878,7 +1878,7 @@ static int __xipram do_write_buffer(stru if (time_after(jiffies, timeo) && !chip_ready(map, adr)) break; - if (chip_ready(map, adr)) { + if (chip_good(map, adr, datum)) { xip_enable(map, chip, adr); goto op_done; }