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drivers: spi: rv32m1_lpspi: Fix null tx

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Initialize the dummy data transfer so spi transfer is defined even for
an undefined tx data buffer. This aligns the rv32m1 spi driver with the
mcux spi driver.

Signed-off-by: Karsten Koenig <karsten.koenig.030@gmail.com>
This commit is contained in:
Karsten Koenig 2020-06-10 18:36:15 +02:00 • committed by Ioannis Glaropoulos
commit 189ae8c890
1 changed files with 2 additions and 0 deletions
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drivers/spi/spi_rv32m1_lpspi.c
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@ -191,6 +191,8 @@ static int spi_mcux_configure(struct device *dev,
LPSPI_MasterTransferCreateHandle(base, &data->handle,
spi_mcux_master_transfer_callback, dev);
LPSPI_SetDummyData(base, 0);
data->ctx.config = spi_cfg;
spi_context_cs_configure(&data->ctx);