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spi: fsl-espi: improve return value handling in fsl_espi_bufs

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Return a proper status code from fsl_espi_bufs instead of returning
the number of remaining words and let the caller evaluate it.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Heiner Kallweit 2016-09-07 22:52:43 +02:00 committed by Mark Brown
parent 809b1e017b
commit 84ccfc371f
1 changed files with 1 additions and 4 deletions
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5
drivers/spi/spi-fsl-espi.c
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@ -258,7 +258,7 @@ static int fsl_espi_bufs(struct spi_device *spi, struct spi_transfer *t)
/* disable rx ints */
mpc8xxx_spi_write_reg(&reg_base->mask, 0);
return mpc8xxx_spi->count;
return mpc8xxx_spi->count > 0 ? -EMSGSIZE : 0;
}
static int fsl_espi_do_trans(struct spi_message *m, struct spi_transfer *trans)
@ -288,9 +288,6 @@ static int fsl_espi_do_trans(struct spi_message *m, struct spi_transfer *trans)
if (trans->len)
ret = fsl_espi_bufs(spi, trans);
if (ret)
ret = -EMSGSIZE;
if (trans->delay_usecs)
udelay(trans->delay_usecs);