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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 34431FA3741 for ; Mon, 31 Oct 2022 05:42:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229956AbiJaFmc (ORCPT ); Mon, 31 Oct 2022 01:42:32 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:54582 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229970AbiJaFmK (ORCPT ); Mon, 31 Oct 2022 01:42:10 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [IPv6:2604:1380:4641:c500::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id B7F81CE19 for ; Sun, 30 Oct 2022 22:41:48 -0700 (PDT) Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 582ED60FA5 for ; Mon, 31 Oct 2022 05:41:48 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6EBA9C433C1; Mon, 31 Oct 2022 05:41:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1667194907; bh=Jpo32dxHz8LwRxLY1Gok71Ixmpl2xr1dsbRzJBN/jD4=; h=Subject:To:Cc:From:Date:From; b=M/VVsMRGOzxcQNXQGnGyKKH7ZC9HDa1qpf8AWg2kvtROk4T9v4ncdolDwSvr9noGv efxAkZGQo9QVGI3Q79xy2zgwodI7FC7Wi/43Q1MLuahdmIi6ttKeTCcN201sqYEfBb gHfSwsKw7ns7JuXg+HKAddv5wjDvYyoo6YeqkHQk= Subject: FAILED: patch "[PATCH] mtd: parsers: bcm47xxpart: Fix halfblock reads" failed to apply to 4.9-stable tree To: linus.walleij@linaro.org, f.fainelli@gmail.com, miquel.raynal@bootlin.com, zajec5@gmail.com Cc: From: Date: Mon, 31 Oct 2022 06:42:36 +0100 Message-ID: <16671949566074@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org The patch below does not apply to the 4.9-stable tree. If someone wants it applied there, or to any other stable or longterm tree, then please email the backport, including the original git commit id to . Possible dependencies: 05e258c6ec66 ("mtd: parsers: bcm47xxpart: Fix halfblock reads") 4c38eded8070 ("mtd: parsers: bcm47xxpart: print correct offset on read error") thanks, greg k-h ------------------ original commit in Linus's tree ------------------ >From 05e258c6ec669d6d18c494ea03d35962d6f5b545 Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Tue, 18 Oct 2022 11:11:29 +0200 Subject: [PATCH] mtd: parsers: bcm47xxpart: Fix halfblock reads MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit There is some code in the parser that tries to read 0x8000 bytes into a block to "read in the middle" of the block. Well that only works if the block is also 0x10000 bytes all the time, else we get these parse errors as we reach the end of the flash: spi-nor spi0.0: mx25l1606e (2048 Kbytes) mtd_read error while parsing (offset: 0x200000): -22 mtd_read error while parsing (offset: 0x201000): -22 (...) Fix the code to do what I think was intended. Cc: stable@vger.kernel.org Fixes: f0501e81fbaa ("mtd: bcm47xxpart: alternative MAGIC for board_data partition") Cc: Rafał Miłecki Cc: Florian Fainelli Signed-off-by: Linus Walleij Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/20221018091129.280026-1-linus.walleij@linaro.org diff --git a/drivers/mtd/parsers/bcm47xxpart.c b/drivers/mtd/parsers/bcm47xxpart.c index 50fcf4c2174b..13daf9bffd08 100644 --- a/drivers/mtd/parsers/bcm47xxpart.c +++ b/drivers/mtd/parsers/bcm47xxpart.c @@ -233,11 +233,11 @@ static int bcm47xxpart_parse(struct mtd_info *master, } /* Read middle of the block */ - err = mtd_read(master, offset + 0x8000, 0x4, &bytes_read, + err = mtd_read(master, offset + (blocksize / 2), 0x4, &bytes_read, (uint8_t *)buf); if (err && !mtd_is_bitflip(err)) { pr_err("mtd_read error while parsing (offset: 0x%X): %d\n", - offset + 0x8000, err); + offset + (blocksize / 2), err); continue; }