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=-4.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_PASS,URIBL_BLOCKED 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 8C5FAC43441 for ; Sun, 11 Nov 2018 20:38:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5A59B20869 for ; Sun, 11 Nov 2018 20:38:26 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 5A59B20869 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=decadent.org.uk 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 S1731631AbeKLG14 (ORCPT ); Mon, 12 Nov 2018 01:27:56 -0500 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:49612 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1730013AbeKLFsJ (ORCPT ); Mon, 12 Nov 2018 00:48:09 -0500 Received: from [192.168.4.242] (helo=deadeye) by shadbolt.decadent.org.uk with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1gLvsT-0000l5-5w; Sun, 11 Nov 2018 19:58:37 +0000 Received: from ben by deadeye with local (Exim 4.91) (envelope-from ) id 1gLvsQ-0001Ui-LS; Sun, 11 Nov 2018 19:58:34 +0000 Content-Type: text/plain; charset="UTF-8" Content-Disposition: inline Content-Transfer-Encoding: 8bit MIME-Version: 1.0 From: Ben Hutchings To: linux-kernel@vger.kernel.org, stable@vger.kernel.org CC: akpm@linux-foundation.org, "Cyrille Pitchen" , "Marek Vasut" , "Boris Brezillon" , "Brian Norris" , "Chris Packham" , "Tokunori Ikegami" , linux-mtd@lists.infradead.org, "Boris Brezillon" , "Richard Weinberger" , "David Woodhouse" , "Joakim Tjernlund" Date: Sun, 11 Nov 2018 19:49:05 +0000 Message-ID: X-Mailer: LinuxStableQueue (scripts by bwh) Subject: [PATCH 3.16 099/366] mtd: cfi_cmdset_0002: Change erase functions to check chip good only In-Reply-To: X-SA-Exim-Connect-IP: 192.168.4.242 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 3.16.61-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Tokunori Ikegami commit 79ca484b613041ca223f74b34608bb6f5221724b upstream. Currently the functions use to check both chip ready and good. But the chip ready is not enough to check the operation status. So change this to check the chip good instead of this. About the retry functions to make sure the error handling remain it. 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 Signed-off-by: Boris Brezillon [bwh: Backported to 3.16: adjust context] Signed-off-by: Ben Hutchings --- drivers/mtd/chips/cfi_cmdset_0002.c | 22 ++++++++++++---------- 1 file changed, 12 insertions(+), 10 deletions(-) --- a/drivers/mtd/chips/cfi_cmdset_0002.c +++ b/drivers/mtd/chips/cfi_cmdset_0002.c @@ -1955,12 +1955,13 @@ static int __xipram do_erase_chip(struct chip->erase_suspended = 0; } - if (chip_ready(map, adr)) + if (chip_good(map, adr, map_word_ff(map))) break; if (time_after(jiffies, timeo)) { printk(KERN_WARNING "MTD %s(): software timeout\n", __func__ ); + ret = -EIO; break; } @@ -1968,15 +1969,15 @@ static int __xipram do_erase_chip(struct UDELAY(map, chip, adr, 1000000/HZ); } /* Did we succeed? */ - if (!chip_good(map, adr, map_word_ff(map))) { + if (ret) { /* reset on all failures. */ map_write( map, CMD(0xF0), chip->start ); /* FIXME - should have reset delay before continuing */ - if (++retry_cnt <= MAX_RETRIES) + if (++retry_cnt <= MAX_RETRIES) { + ret = 0; goto retry; - - ret = -EIO; + } } chip->state = FL_READY; @@ -2050,7 +2051,7 @@ static int __xipram do_erase_oneblock(st chip->erase_suspended = 0; } - if (chip_ready(map, adr)) { + if (chip_good(map, adr, map_word_ff(map))) { xip_enable(map, chip, adr); break; } @@ -2059,6 +2060,7 @@ static int __xipram do_erase_oneblock(st xip_enable(map, chip, adr); printk(KERN_WARNING "MTD %s(): software timeout\n", __func__ ); + ret = -EIO; break; } @@ -2066,15 +2068,15 @@ static int __xipram do_erase_oneblock(st UDELAY(map, chip, adr, 1000000/HZ); } /* Did we succeed? */ - if (!chip_good(map, adr, map_word_ff(map))) { + if (ret) { /* reset on all failures. */ map_write( map, CMD(0xF0), chip->start ); /* FIXME - should have reset delay before continuing */ - if (++retry_cnt <= MAX_RETRIES) + if (++retry_cnt <= MAX_RETRIES) { + ret = 0; goto retry; - - ret = -EIO; + } } chip->state = FL_READY;