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drivers: spi: Fixing null-pointer dereference in stm32

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Fixes #21935

Signed-off-by: David D <a8961713@gmail.com>
This commit is contained in:
David D 2020-01-16 07:18:19 +02:00 • committed by Anas Nashif
commit b96525c82c
1 changed files with 2 additions and 2 deletions
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4
drivers/spi/spi_ll_stm32.c
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@ -96,14 +96,14 @@ static void spi_stm32_shift_m(SPI_TypeDef *spi, struct spi_stm32_data *data)
#endif #endif
if (SPI_WORD_SIZE_GET(data->ctx.config->operation) == 8) { if (SPI_WORD_SIZE_GET(data->ctx.config->operation) == 8) {
if (spi_context_tx_on(&data->ctx)) { if (spi_context_tx_buf_on(&data->ctx)) {
tx_frame = UNALIGNED_GET((u8_t *)(data->ctx.tx_buf)); tx_frame = UNALIGNED_GET((u8_t *)(data->ctx.tx_buf));
} }
LL_SPI_TransmitData8(spi, tx_frame); LL_SPI_TransmitData8(spi, tx_frame);
/* The update is ignored if TX is off. */ /* The update is ignored if TX is off. */
spi_context_update_tx(&data->ctx, 1, 1); spi_context_update_tx(&data->ctx, 1, 1);
} else { } else {
if (spi_context_tx_on(&data->ctx)) { if (spi_context_tx_buf_on(&data->ctx)) {
tx_frame = UNALIGNED_GET((u16_t *)(data->ctx.tx_buf)); tx_frame = UNALIGNED_GET((u16_t *)(data->ctx.tx_buf));
} }
LL_SPI_TransmitData16(spi, tx_frame); LL_SPI_TransmitData16(spi, tx_frame);