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mtd: rawnand: intel: Fix an error handling path in 'ebu_dma_start()'

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If 'dmaengine_prep_slave_single()' fails, we must undo a previous
'dma_map_single()' call, as already done in all the other error handling
paths of this function.

Fixes: 0b1039f016e8 ("mtd: rawnand: Add NAND controller support on Intel LGM SoC")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210124073955.728797-1-christophe.jaillet@wanadoo.fr
This commit is contained in:
Christophe JAILLET 2021-01-24 08:39:55 +01:00 committed by Miquel Raynal
parent 94d07f6a53
commit 073abfa7ea
1 changed files with 4 additions and 2 deletions
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6
drivers/mtd/nand/raw/intel-nand-controller.c
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@ -318,8 +318,10 @@ static int ebu_dma_start(struct ebu_nand_controller *ebu_host, u32 dir,
}
tx = dmaengine_prep_slave_single(chan, buf_dma, len, dir, flags);
if (!tx)
return -ENXIO;
if (!tx) {
ret = -ENXIO;
goto err_unmap;
}
tx->callback = callback;
tx->callback_param = ebu_host;