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 A73EEC433F5 for ; Mon, 28 Feb 2022 17:25:58 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233850AbiB1R0f (ORCPT ); Mon, 28 Feb 2022 12:26:35 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:42886 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233602AbiB1R0Z (ORCPT ); Mon, 28 Feb 2022 12:26:25 -0500 Received: from ams.source.kernel.org (ams.source.kernel.org [145.40.68.75]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 29FFF75E6B; Mon, 28 Feb 2022 09:25:46 -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 CD25DB815A5; Mon, 28 Feb 2022 17:25:44 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 11042C340F4; Mon, 28 Feb 2022 17:25:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1646069143; bh=Vv7wFnUGlLa3rURQC2K9jde3PYf5CPhS7IZInxX0iB0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=mYck5cBhKsgarVNK0pTvm2l+/iT7xQl5uEjfKIuvR/78zCOOtEcL+TzMQKdGCFHhF nkScTEPDTtu0uT66ddNWeQq6DQ+4DstVN0DCmnYDj1d0g+HlT7lZ0LW5Dl+fjm6SbJ SyE1aW8qd48oMSJopETavQkRTC34SyR/OMgtCxok= 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 4.9 01/29] mtd: rawnand: brcmnand: Fixed incorrect sub-page ECC status Date: Mon, 28 Feb 2022 18:23:28 +0100 Message-Id: <20220228172141.922269337@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220228172141.744228435@linuxfoundation.org> References: <20220228172141.744228435@linuxfoundation.org> User-Agent: quilt/0.66 X-stable: review X-Patchwork-Hint: ignore 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 [florian: make patch apply to 4.14, file was renamed] Signed-off-by: Florian Fainelli Signed-off-by: Greg Kroah-Hartman --- drivers/mtd/nand/brcmnand/brcmnand.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- a/drivers/mtd/nand/brcmnand/brcmnand.c +++ b/drivers/mtd/nand/brcmnand/brcmnand.c @@ -1637,7 +1637,7 @@ static int brcmnand_read_by_pio(struct m mtd->oobsize / trans, host->hwcfg.sector_size_1k); - if (!ret) { + if (ret != -EBADMSG) { *err_addr = brcmnand_read_reg(ctrl, BRCMNAND_UNCORR_ADDR) | ((u64)(brcmnand_read_reg(ctrl,