From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8D98A126BF7; Tue, 29 Apr 2025 16:48:11 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745945291; cv=none; b=Q2mSwcfGahc30QwxeY0iAinxz0SgbskRDj5BLJdjEguDwZDmLal3mLnbtrMJaKYiNc04d/Ent4gQqJRQHJH+NedZm+gLEd/c4mRR5ojo4G5yE+5ePzRau/wtTO42hNDqqy3Wz9fhTWqDK6ZAqhBoITZeMdXbUJdNH+pDCxT68+8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1745945291; c=relaxed/simple; bh=aE0co5hDSQQIIlTulipBcnFkCb6slXeASCRbsWbg4ow=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=toa7RLokbKYy/BEdI+9smwMaKnANPfIpEsdmSgiomnAHr7NlhpDJerGLHLWPhvmvTQ/DWR2ycegGi2cpdMAFnKWEOE/AcvXxDwwNZfgklc3lufO3ytjagZaQkQtvS10Kczm+dloweqiHGX+qDZqrZ683OuhAK6GyvWsZvdVZOS8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=Jz2ZO8im; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="Jz2ZO8im" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AA84DC4CEE3; Tue, 29 Apr 2025 16:48:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1745945291; bh=aE0co5hDSQQIIlTulipBcnFkCb6slXeASCRbsWbg4ow=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=Jz2ZO8imVbJeyjrOWCJVdQldDUR0aw2PVCtDmKrIN+5nLb8I1Io3eYpZZt1hRRXhN NuSapaL390khu++zn3vb2Cg06ytgrY1xjQ/Qk5c/lcbl09Tc5PvG2HNdHS/T3IWVM6 X3+CAP96jU56EIPaj40vpU+hNsRHtZ3IpleLuVZQ= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Wentao Liang , Miquel Raynal Subject: [PATCH 5.4 064/179] mtd: rawnand: Add status chack in r852_ready() Date: Tue, 29 Apr 2025 18:40:05 +0200 Message-ID: <20250429161051.997324601@linuxfoundation.org> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250429161049.383278312@linuxfoundation.org> References: <20250429161049.383278312@linuxfoundation.org> User-Agent: quilt/0.68 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 5.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Wentao Liang commit b79fe1829975556854665258cf4d2476784a89db upstream. In r852_ready(), the dev get from r852_get_dev() need to be checked. An unstable device should not be ready. A proper implementation can be found in r852_read_byte(). Add a status check and return 0 when it is unstable. Fixes: 50a487e7719c ("mtd: rawnand: Pass a nand_chip object to chip->dev_ready()") Cc: stable@vger.kernel.org # v4.20+ Signed-off-by: Wentao Liang Signed-off-by: Miquel Raynal Signed-off-by: Greg Kroah-Hartman --- drivers/mtd/nand/raw/r852.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/mtd/nand/raw/r852.c +++ b/drivers/mtd/nand/raw/r852.c @@ -387,6 +387,9 @@ static int r852_wait(struct nand_chip *c static int r852_ready(struct nand_chip *chip) { struct r852_device *dev = r852_get_dev(nand_to_mtd(chip)); + if (dev->card_unstable) + return 0; + return !(r852_read_reg(dev, R852_CARD_STA) & R852_CARD_STA_BUSY); }