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 7873E2BEC45; Tue, 26 Aug 2025 13:46:01 +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=1756215961; cv=none; b=kOE5U1kwKACc+qOxmfamvxexe/eErKE4/Y8dG3vLFZIE60Gplbq3FS4/XwolECAGLV4lTj9caRxXU3tp305G4EIDXuJCZ70n5Nbd/o114zbLRpdey9aMxsdohv54emqcE/HqDLunsrIsils4CxsFu+D0bp2nNvPSEOeUVE3jJJU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756215961; c=relaxed/simple; bh=wta2yrMAt+L0+OoNtNno8Bz3q2wDbwbg8piUkN9ssB4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=ov8RsWAG8Y6o2GXbxBI636pKB3+pn2/FmrJVDu/Gv/8vxFZxbpkfDTXUk7550F0uhg4ufMPdJeOfS22y0vOHtsjV1dl/C2fp3A1VnRETDC7zkf1hMwOhnRaGnOBL3T9g2okt5VLgOZo5qQRGTV+WFxpop/ospJ4OUGn+HUR34rk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=MBfR4sNP; 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="MBfR4sNP" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 012FDC4CEF1; Tue, 26 Aug 2025 13:46:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1756215961; bh=wta2yrMAt+L0+OoNtNno8Bz3q2wDbwbg8piUkN9ssB4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MBfR4sNPPnFYB9Tth7kKSFOzkD05RisK5Ve/yYiwyaOwiyycLaFpBR5UQn9sRRu5c hMvmefJ8xWDaFD7vnZgj2jKMw4Hy3PD3vk1hB3z0bd231m/qxsMlAO4c8C3+7JtEm3 jDfPjKkJyzox87E8AMizhXlQdATLQlxfPENQ8Fxw= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Thomas Fourier , Miquel Raynal , Sasha Levin Subject: [PATCH 5.15 200/644] mtd: rawnand: rockchip: Add missing check after DMA map Date: Tue, 26 Aug 2025 13:04:51 +0200 Message-ID: <20250826110951.397470482@linuxfoundation.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250826110946.507083938@linuxfoundation.org> References: <20250826110946.507083938@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 5.15-stable review patch. If anyone has any objections, please let me know. ------------------ From: Thomas Fourier [ Upstream commit 3b36f86dc47261828f96f826077131a35dd825fd ] The DMA map functions can fail and should be tested for errors. Fixes: 058e0e847d54 ("mtd: rawnand: rockchip: NFC driver for RK3308, RK2928 and others") Signed-off-by: Thomas Fourier Signed-off-by: Miquel Raynal Signed-off-by: Sasha Levin --- drivers/mtd/nand/raw/rockchip-nand-controller.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/mtd/nand/raw/rockchip-nand-controller.c b/drivers/mtd/nand/raw/rockchip-nand-controller.c index f45c85a1a5a3..76721a3b3e33 100644 --- a/drivers/mtd/nand/raw/rockchip-nand-controller.c +++ b/drivers/mtd/nand/raw/rockchip-nand-controller.c @@ -657,9 +657,16 @@ static int rk_nfc_write_page_hwecc(struct nand_chip *chip, const u8 *buf, dma_data = dma_map_single(nfc->dev, (void *)nfc->page_buf, mtd->writesize, DMA_TO_DEVICE); + if (dma_mapping_error(nfc->dev, dma_data)) + return -ENOMEM; + dma_oob = dma_map_single(nfc->dev, nfc->oob_buf, ecc->steps * oob_step, DMA_TO_DEVICE); + if (dma_mapping_error(nfc->dev, dma_oob)) { + dma_unmap_single(nfc->dev, dma_data, mtd->writesize, DMA_TO_DEVICE); + return -ENOMEM; + } reinit_completion(&nfc->done); writel(INT_DMA, nfc->regs + nfc->cfg->int_en_off); @@ -773,9 +780,17 @@ static int rk_nfc_read_page_hwecc(struct nand_chip *chip, u8 *buf, int oob_on, dma_data = dma_map_single(nfc->dev, nfc->page_buf, mtd->writesize, DMA_FROM_DEVICE); + if (dma_mapping_error(nfc->dev, dma_data)) + return -ENOMEM; + dma_oob = dma_map_single(nfc->dev, nfc->oob_buf, ecc->steps * oob_step, DMA_FROM_DEVICE); + if (dma_mapping_error(nfc->dev, dma_oob)) { + dma_unmap_single(nfc->dev, dma_data, mtd->writesize, + DMA_FROM_DEVICE); + return -ENOMEM; + } /* * The first blocks (4, 8 or 16 depending on the device) -- 2.39.5