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spi: spi-fsl-dspi: Avoid NULL pointer in dspi_slave_abort for non-DMA mode 

The driver does not create the dspi->dma structure unless operating in
DSPI_DMA_MODE, so it makes sense to check for that.

Fixes: f4b323905d ("spi: Introduce dspi_slave_abort() function for NXP's dspi SPI driver")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Michael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20200318001603.9650-8-olteanv@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Vladimir Oltean 2020-03-18 02:15:58 +02:00 committed by Mark Brown
parent 4f5ee75ea1
commit 3d6224e63b
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 4 additions and 2 deletions
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6
drivers/spi/spi-fsl-dspi.c
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@ -1192,8 +1192,10 @@ static int dspi_slave_abort(struct spi_master *master)
* Terminate all pending DMA transactions for the SPI working
* in SLAVE mode.
*/
dmaengine_terminate_sync(dspi->dma->chan_rx);
dmaengine_terminate_sync(dspi->dma->chan_tx);
if (dspi->devtype_data->trans_mode == DSPI_DMA_MODE) {
dmaengine_terminate_sync(dspi->dma->chan_rx);
dmaengine_terminate_sync(dspi->dma->chan_tx);
}
/* Clear the internal DSPI RX and TX FIFO buffers */
regmap_update_bits(dspi->regmap, SPI_MCR,