Commit 073abfa7 authored by Christophe JAILLET's avatar Christophe JAILLET Committed by Miquel Raynal
Browse files

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



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: 0b1039f0 ("mtd: rawnand: Add NAND controller support on Intel LGM SoC")
Signed-off-by: default avatarChristophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: default avatarMiquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/linux-mtd/20210124073955.728797-1-christophe.jaillet@wanadoo.fr
parent 94d07f6a

drivers/mtd/nand/raw/intel-nand-controller.c

+4 −2
Original line number Diff line number Diff line
@@ -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;