diff options
| author | Tony Lindgren <tony@atomide.com> | 2021-08-10 11:17:26 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2021-08-10 15:22:19 +0300 |
| commit | 209ab223ad5b18e437289235e3bde12593b94ac4 (patch) | |
| tree | 4b8bb3fc14767ea4e3db7b2f8e0a3b3036a6e566 /drivers/spi | |
| parent | 5c842e51ac63130a1344650b0a95bdc398666947 (diff) | |
| download | linux-209ab223ad5b18e437289235e3bde12593b94ac4.tar.xz | |
spi: spi-fsl-dspi: Fix issue with uninitialized dma_slave_config
Depending on the DMA driver being used, the struct dma_slave_config may
need to be initialized to zero for the unused data.
For example, we have three DMA drivers using src_port_window_size and
dst_port_window_size. If these are left uninitialized, it can cause DMA
failures.
For spi-fsl-dspi, this is probably not currently an issue but is still
good to fix though.
Fixes: 90ba37033cb9 ("spi: spi-fsl-dspi: Add DMA support for Vybrid")
Cc: Sanchayan Maity <maitysanchayan@gmail.com>
Cc: Vladimir Oltean <vladimir.oltean@nxp.com>
Cc: Peter Ujfalusi <peter.ujfalusi@gmail.com>
Cc: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Acked-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20210810081727.19491-1-tony@atomide.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi')
| -rw-r--r-- | drivers/spi/spi-fsl-dspi.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index fb45e6af6638..fd004c9db9dc 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -530,6 +530,7 @@ static int dspi_request_dma(struct fsl_dspi *dspi, phys_addr_t phy_addr) goto err_rx_dma_buf; } + memset(&cfg, 0, sizeof(cfg)); cfg.src_addr = phy_addr + SPI_POPR; cfg.dst_addr = phy_addr + SPI_PUSHR; cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_4_BYTES; |