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 7351EC3527A for ; Mon, 21 Feb 2022 10:03:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1354129AbiBUKC5 (ORCPT ); Mon, 21 Feb 2022 05:02:57 -0500 Received: from mxb-00190b01.gslb.pphosted.com ([23.128.96.19]:50492 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1352440AbiBUJzP (ORCPT ); Mon, 21 Feb 2022 04:55:15 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 8190438BDD; Mon, 21 Feb 2022 01:24:17 -0800 (PST) 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 ams.source.kernel.org (Postfix) with ESMTPS id 19FB0B80EC9; Mon, 21 Feb 2022 09:24:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 5940DC340E9; Mon, 21 Feb 2022 09:24:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1645435454; bh=cpdzsA5c5JM7G2P5UtQuYbH2avba+bmbzjIUFc05maI=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=JyQMMjFi6zyz4eM8uNKHwLRlLUKrkHNNma3nvyC/ge+5BlzgF7EkSSrpOEHN+nM8z G+2ciSZor7szCXeD3DrsTgCgLnsTS/ycs3/LVbNyflEyKZH+s8C2pUPYZ69enPkW1k WMHgeB4xNcLrEgRcoK0SxUGH1Ezva7MCQg6wF47A= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, david regan , Florian Fainelli , Miquel Raynal Subject: [PATCH 5.16 169/227] mtd: rawnand: brcmnand: Fixed incorrect sub-page ECC status Date: Mon, 21 Feb 2022 09:49:48 +0100 Message-Id: <20220221084940.437727857@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220221084934.836145070@linuxfoundation.org> References: <20220221084934.836145070@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: david regan commit 36415a7964711822e63695ea67fede63979054d9 upstream. The brcmnand driver contains a bug in which if a page (example 2k byte) is read from the parallel/ONFI NAND and within that page a subpage (512 byte) has correctable errors which is followed by a subpage with uncorrectable errors, the page read will return the wrong status of correctable (as opposed to the actual status of uncorrectable.) The bug is in function brcmnand_read_by_pio where there is a check for uncorrectable bits which will be preempted if a previous status for correctable bits is detected. The fix is to stop checking for bad bits only if we already have a bad bits status. Fixes: 27c5b17cd1b1 ("mtd: nand: add NAND driver "library" for Broadcom STB NAND controller") Signed-off-by: david regan Reviewed-by: Florian Fainelli Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/trinity-478e0c09-9134-40e8-8f8c-31c371225eda-1643237024774@3c-app-mailcom-lxa02 Signed-off-by: Greg Kroah-Hartman --- drivers/mtd/nand/raw/brcmnand/brcmnand.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mtd/nand/raw/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/raw/brcmnand/brcmnand.c @@ -2106,7 +2106,7 @@ static int brcmnand_read_by_pio(struct m mtd->oobsize / trans, host->hwcfg.sector_size_1k); - if (!ret) { + if (ret != -EBADMSG) { *err_addr = brcmnand_get_uncorrecc_addr(ctrl); if (*err_addr)