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mtd: rawnand: marvell: Fix error handle regarding dma_map_sg 

dma_map_sg return 0 on error, in case of error return -EIO,
also add the dma_unmap_sg as rollback on the following error.

Cc: Miquel Raynal <miquel.raynal@bootlin.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com>
Cc: Alexandre Torgue <alexandre.torgue@foss.st.com>
Cc: Philipp Zabel <p.zabel@pengutronix.de>
Cc: Christophe Kerello <christophe.kerello@foss.st.com>
Cc: Cai Huoqing <cai.huoqing@linux.dev>
Cc: linux-mtd@lists.infradead.org
Cc: linux-stm32@st-md-mailman.stormreply.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: linux-kernel@vger.kernel.org

Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20220819060801.10443-6-jinpu.wang@ionos.com
This commit is contained in:
Jack Wang 2022-08-19 08:07:47 +02:00 committed by Miquel Raynal
parent 43b81c2a3e
commit 40c9ba0dec
1 changed files with 7 additions and 1 deletions
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8
drivers/mtd/nand/raw/marvell_nand.c
View File

@ -865,13 +865,19 @@ static int marvell_nfc_xfer_data_dma(struct marvell_nfc *nfc,
marvell_nfc_enable_dma(nfc);
/* Prepare the DMA transfer */
sg_init_one(&sg, nfc->dma_buf, dma_len);
dma_map_sg(nfc->dma_chan->device->dev, &sg, 1, direction);
ret = dma_map_sg(nfc->dma_chan->device->dev, &sg, 1, direction);
if (!ret) {
dev_err(nfc->dev, "Could not map DMA S/G list\n");
return -ENXIO;
}
tx = dmaengine_prep_slave_sg(nfc->dma_chan, &sg, 1,
direction == DMA_FROM_DEVICE ?
DMA_DEV_TO_MEM : DMA_MEM_TO_DEV,
DMA_PREP_INTERRUPT);
if (!tx) {
dev_err(nfc->dev, "Could not prepare DMA S/G list\n");
dma_unmap_sg(nfc->dma_chan->device->dev, &sg, 1, direction);
return -ENXIO;
}