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authorTomasz Figa <tomasz.figa@gmail.com>2013-08-11 02:33:28 +0200
committerMark Brown <broonie@linaro.org>2013-08-11 14:06:30 +0100
commitb1a8e78d173081c303bea88e92a1e1423befca63 (patch)
tree6d4b0b1207a78c9525d18d56e7c80055f7dd738c /drivers/spi/spi-s3c64xx.c
parentspi: s3c64xx: fix casting warning (diff)
downloadlinux-dev-b1a8e78d173081c303bea88e92a1e1423befca63.tar.xz
linux-dev-b1a8e78d173081c303bea88e92a1e1423befca63.zip
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>
Diffstat (limited to 'drivers/spi/spi-s3c64xx.c')
-rw-r--r--drivers/spi/spi-s3c64xx.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/spi/spi-s3c64xx.c b/drivers/spi/spi-s3c64xx.c
index c9d0b1273be9..d67384b3c318 100644
--- a/drivers/spi/spi-s3c64xx.c
+++ b/drivers/spi/spi-s3c64xx.c
@@ -392,6 +392,8 @@ static void prepare_dma(struct s3c64xx_spi_dma_data *dma,
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);