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 BC53E15AE3 for ; Wed, 9 Aug 2023 10:48:22 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 395C4C433C7; Wed, 9 Aug 2023 10:48:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1691578102; bh=ogEyB2jafn+lL0XcfemZLOnlaxUvSvCl+NBfFQsP8A8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ICtQVy5k1DaWDuCzwfu7/pqDIjXpw9c5QB0cGhmxn7/wfgy6+ufjrCGJLBqa/Pc/t GudnwZuLPzD2/dwtw7VoK2x8I9ghSBrYMFNIqmGMcqB5eWp/92MdnsOJoe9Hg4gXrM E5lqGdLwCUfOyXaRLCaLyeSTyae3Rlth1+/o3lWM= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Olivier Maignial , Miquel Raynal Subject: [PATCH 6.4 107/165] mtd: spinand: toshiba: Fix ecc_get_status Date: Wed, 9 Aug 2023 12:40:38 +0200 Message-ID: <20230809103646.293594828@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230809103642.720851262@linuxfoundation.org> References: <20230809103642.720851262@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Olivier Maignial commit 8544cda94dae6be3f1359539079c68bb731428b1 upstream. Reading ECC status is failing. tx58cxgxsxraix_ecc_get_status() is using on-stack buffer for SPINAND_GET_FEATURE_OP() output. It is not suitable for DMA needs of spi-mem. Fix this by using the spi-mem operations dedicated buffer spinand->scratchbuf. See spinand->scratchbuf: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/include/linux/mtd/spinand.h?h=v6.3#n418 spi_mem_check_op(): https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/drivers/spi/spi-mem.c?h=v6.3#n199 Fixes: 10949af1681d ("mtd: spinand: Add initial support for Toshiba TC58CVG2S0H") Cc: stable@vger.kernel.org Signed-off-by: Olivier Maignial Signed-off-by: Miquel Raynal Link: https://lore.kernel.org/linux-mtd/DB4P250MB1032553D05FBE36DEE0D311EFE23A@DB4P250MB1032.EURP250.PROD.OUTLOOK.COM Signed-off-by: Greg Kroah-Hartman --- drivers/mtd/nand/spi/toshiba.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/drivers/mtd/nand/spi/toshiba.c +++ b/drivers/mtd/nand/spi/toshiba.c @@ -73,7 +73,7 @@ static int tx58cxgxsxraix_ecc_get_status { struct nand_device *nand = spinand_to_nand(spinand); u8 mbf = 0; - struct spi_mem_op op = SPINAND_GET_FEATURE_OP(0x30, &mbf); + struct spi_mem_op op = SPINAND_GET_FEATURE_OP(0x30, spinand->scratchbuf); switch (status & STATUS_ECC_MASK) { case STATUS_ECC_NO_BITFLIPS: @@ -92,7 +92,7 @@ static int tx58cxgxsxraix_ecc_get_status if (spi_mem_exec_op(spinand->spimem, &op)) return nanddev_get_ecc_conf(nand)->strength; - mbf >>= 4; + mbf = *(spinand->scratchbuf) >> 4; if (WARN_ON(mbf > nanddev_get_ecc_conf(nand)->strength || !mbf)) return nanddev_get_ecc_conf(nand)->strength;