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 7ADD7321459; Tue, 26 Aug 2025 11:20:11 +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=1756207211; cv=none; b=fmXFiV7H4ouuz3kmTehLEIUbbm5o3zz7r6v+t/REn7PawIxkesbZhs47GbtnWMx5EwRgtENRVD4rENuEpslWYSGPHzv2bsC2eBoZUw+9rlbU8bai8FDjj+XCKdyC/ddlvzTXDcLPlvgJiI49sB1zI6pZeRNV69JuctmCWD08Dos= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756207211; c=relaxed/simple; bh=H0VKSfbs/N2PQdPsVE0OmRMob9ft5ggO8PUx+wnoiVY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=gw4sPiuf1an8HW46b5qJApct0RMQaqFE7X5Vqv9eEerBtpjMPXWk098PDFn3OiDrEZBTOaphCtBv+b22UdnHoqVdX7OuhoJQtrjsMR8Yslu7l6e5MhOBZC8Cg1h5pn4xTBgqsP0qenDPhEfACMb9G89uVZUmR5LNmIMPeiCgcJ4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=ySa5ycc3; 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="ySa5ycc3" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 0503AC4CEF1; Tue, 26 Aug 2025 11:20:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756207211; bh=H0VKSfbs/N2PQdPsVE0OmRMob9ft5ggO8PUx+wnoiVY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=ySa5ycc319+D9GDNPknAj17tjQqlWZ+qCGaI5CpfceBATqesSat/KPcK3FLIVu65Z rVbWRCI2FdW0M5qXdf1/+RPRCEkvaaJ5ChnilxO6ujD9Tyq9EUHnZ841+bURdReWg1 bGXoKuwag051GeynrkLxqCCno+pQZT2Cn858qpi0= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thomas Fourier , Miquel Raynal Subject: [PATCH 6.16 094/457] mtd: rawnand: renesas: Add missing check after DMA map Date: Tue, 26 Aug 2025 13:06:18 +0200 Message-ID: <20250826110939.701271599@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110937.289866482@linuxfoundation.org> References: <20250826110937.289866482@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 6.16-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thomas Fourier commit 79e441ee47949376e3bc20f085cf017b70523d0f upstream. The DMA map functions can fail and should be tested for errors. Fixes: d8701fe890ec ("mtd: rawnand: renesas: Add new NAND controller driver") Cc: stable@vger.kernel.org Signed-off-by: Thomas Fourier Signed-off-by: Miquel Raynal Signed-off-by: Greg Kroah-Hartman --- drivers/mtd/nand/raw/renesas-nand-controller.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/mtd/nand/raw/renesas-nand-controller.c +++ b/drivers/mtd/nand/raw/renesas-nand-controller.c @@ -426,6 +426,9 @@ static int rnandc_read_page_hw_ecc(struc /* Configure DMA */ dma_addr = dma_map_single(rnandc->dev, rnandc->buf, mtd->writesize, DMA_FROM_DEVICE); + if (dma_mapping_error(rnandc->dev, dma_addr)) + return -ENOMEM; + writel(dma_addr, rnandc->regs + DMA_ADDR_LOW_REG); writel(mtd->writesize, rnandc->regs + DMA_CNT_REG); writel(DMA_TLVL_MAX, rnandc->regs + DMA_TLVL_REG); @@ -606,6 +609,9 @@ static int rnandc_write_page_hw_ecc(stru /* Configure DMA */ dma_addr = dma_map_single(rnandc->dev, (void *)rnandc->buf, mtd->writesize, DMA_TO_DEVICE); + if (dma_mapping_error(rnandc->dev, dma_addr)) + return -ENOMEM; + writel(dma_addr, rnandc->regs + DMA_ADDR_LOW_REG); writel(mtd->writesize, rnandc->regs + DMA_CNT_REG); writel(DMA_TLVL_MAX, rnandc->regs + DMA_TLVL_REG);