spi: s3c64xx: Zero dma_slave_config struct in prepare_dma()
Not all fields of dma_slave_config struct are being initialized by
prepare_dma() function, leaving those which are not in undefined state,
which can confuse DMA drivers using them.
This patch adds call to memset() to zero the struct before initializing
a subset of its fields.
Signed-off-by: Tomasz Figa <tomasz.figa@gmail.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index c9d0b12..d67384b 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -392,6 +392,8 @@
struct scatterlist sg;
struct dma_async_tx_descriptor *desc;
+ memset(&config, 0, sizeof(config));
+
if (dma->direction == DMA_DEV_TO_MEM) {
sdd = container_of((void *)dma,
struct s3c64xx_spi_driver_data, rx_dma);