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spi: imx: Nothing to do in setupxfer when transfer is NULL

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When the spi_transfer given in spi_imx_setupxfer is NULL then
we have nothing to do. Bail out early in this case so that
we do not have to test for t != NULL multiple times later.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Sascha Hauer 2017-06-02 07:37:59 +02:00 committed by Mark Brown
parent 09b3ed2d59
commit abb1ff195a
1 changed files with 5 additions and 5 deletions
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10
drivers/spi/spi-imx.c
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@ -217,9 +217,6 @@ static bool spi_imx_can_dma(struct spi_master *master, struct spi_device *spi,
if (!master->dma_rx)
return false;
if (!transfer)
return false;
bpw = transfer->bits_per_word;
if (!bpw)
bpw = spi->bits_per_word;
@ -895,8 +892,11 @@ static int spi_imx_setupxfer(struct spi_device *spi,
struct spi_imx_config config;
int ret;
config.bpw = t ? t->bits_per_word : spi->bits_per_word;
config.speed_hz = t ? t->speed_hz : spi->max_speed_hz;
if (!t)
return 0;
config.bpw = t->bits_per_word;
config.speed_hz = t->speed_hz;
if (!config.speed_hz)
config.speed_hz = spi->max_speed_hz;