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Message-ID: <3efb5636-1f20-fbc9-8f0f-0047d0165a96@foss.st.com>
Date: Tue, 23 Aug 2022 09:49:37 +0200
From: Christophe Kerello <christophe.kerello@...s.st.com>
To: Jack Wang <jinpu.wang@...os.com>, <linux-kernel@...r.kernel.org>
CC: Miquel Raynal <miquel.raynal@...tlin.com>,
Richard Weinberger <richard@....at>,
Vignesh Raghavendra <vigneshr@...com>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre Torgue <alexandre.torgue@...s.st.com>,
Philipp Zabel <p.zabel@...gutronix.de>,
Cai Huoqing <cai.huoqing@...ux.dev>,
<linux-mtd@...ts.infradead.org>,
<linux-stm32@...md-mailman.stormreply.com>,
<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v1 04/19] mtd: rawnand: stm32_fmc2: Fix dma_map_sg error
check
Hi Jack,
On 8/19/22 08:07, Jack Wang wrote:
> dma_map_sg return 0 on error, in case of error return -EIO.
>
> Cc: Miquel Raynal <miquel.raynal@...tlin.com>
> Cc: Richard Weinberger <richard@....at>
> Cc: Vignesh Raghavendra <vigneshr@...com>
> Cc: Maxime Coquelin <mcoquelin.stm32@...il.com>
> Cc: Alexandre Torgue <alexandre.torgue@...s.st.com>
> Cc: Philipp Zabel <p.zabel@...gutronix.de>
> Cc: Christophe Kerello <christophe.kerello@...s.st.com>
> Cc: Cai Huoqing <cai.huoqing@...ux.dev>
> Cc: linux-mtd@...ts.infradead.org
> Cc: linux-stm32@...md-mailman.stormreply.com
> Cc: linux-arm-kernel@...ts.infradead.org
> Cc: linux-kernel@...r.kernel.org
> Signed-off-by: Jack Wang <jinpu.wang@...os.com>
> ---
> drivers/mtd/nand/raw/stm32_fmc2_nand.c | 8 +++++---
> 1 file changed, 5 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/mtd/nand/raw/stm32_fmc2_nand.c b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
> index 87c1c7dd97eb..a0c825af19fa 100644
> --- a/drivers/mtd/nand/raw/stm32_fmc2_nand.c
> +++ b/drivers/mtd/nand/raw/stm32_fmc2_nand.c
> @@ -862,8 +862,8 @@ static int stm32_fmc2_nfc_xfer(struct nand_chip *chip, const u8 *buf,
>
> ret = dma_map_sg(nfc->dev, nfc->dma_data_sg.sgl,
> eccsteps, dma_data_dir);
> - if (ret < 0)
> - return ret;
> + if (!ret)
> + return -EIO;
>
> desc_data = dmaengine_prep_slave_sg(dma_ch, nfc->dma_data_sg.sgl,
> eccsteps, dma_transfer_dir,
> @@ -893,8 +893,10 @@ static int stm32_fmc2_nfc_xfer(struct nand_chip *chip, const u8 *buf,
>
> ret = dma_map_sg(nfc->dev, nfc->dma_ecc_sg.sgl,
> eccsteps, dma_data_dir);
> - if (ret < 0)
> + if (!ret) {
> + ret = -EIO;
> goto err_unmap_data;
> + }
>
> desc_ecc = dmaengine_prep_slave_sg(nfc->dma_ecc_ch,
> nfc->dma_ecc_sg.sgl,
Reviewed-by: Christophe Kerello <christophe.kerello@...s.st.com>
Regards,
Christophe Kerello.
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