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spi: sh-msiof: Fix DMA transfer size check

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[ Upstream commit 36735783fdb599c94b9c86824583df367c65900b ]

DMA supports 32-bit words only,
even if BITLEN1 of SITMDR2 register is 16bit.

Fixes: b0d0ce8b6b ("spi: sh-msiof: Add DMA support")
Signed-off-by: Hiromitsu Yamasaki <hiromitsu.yamasaki.ym@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: Dirk Behme <dirk.behme@de.bosch.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Hiromitsu Yamasaki 2017-11-02 10:32:36 +01:00 committed by Greg Kroah-Hartman
parent a96c19f5ba
commit b6ca48b5cd
1 changed files with 1 additions and 1 deletions
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2
drivers/spi/spi-sh-msiof.c
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@ -863,7 +863,7 @@ static int sh_msiof_transfer_one(struct spi_master *master,
break;
copy32 = copy_bswap32;
} else if (bits <= 16) {
if (l & 1)
if (l & 3)
break;
copy32 = copy_wswap32;
} else {