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spi: lpspi: Add the missing NULL check 

The spi_transfer *t will be used in one transfer whatever. If t is NULL,
there has no need to try sending data, so add an error return here.

Signed-off-by: Clark Wang <xiaoning.wang@nxp.com>
Acked-by: Fugang Duan <Fugang.duan@nxp.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Clark Wang 2019-03-06 06:30:47 +00:00 committed by Mark Brown
parent 09c04466ce
commit 578465ea2b
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GPG Key ID: 24D68B725D5487D0
1 changed files with 5 additions and 2 deletions
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7
drivers/spi/spi-fsl-lpspi.c
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@ -438,9 +438,12 @@ static int fsl_lpspi_setup_transfer(struct spi_controller *controller,
struct fsl_lpspi_data *fsl_lpspi =
spi_controller_get_devdata(spi->controller);
if (t == NULL)
return -EINVAL;
fsl_lpspi->config.mode = spi->mode;
fsl_lpspi->config.bpw = t ? t->bits_per_word : spi->bits_per_word;
fsl_lpspi->config.speed_hz = t ? t->speed_hz : spi->max_speed_hz;
fsl_lpspi->config.bpw = t->bits_per_word;
fsl_lpspi->config.speed_hz = t->speed_hz;
fsl_lpspi->config.chip_select = spi->chip_select;
if (!fsl_lpspi->config.speed_hz)