| Message ID | 20210810081727.19491-2-tony@atomide.com |
|---|---|
| State | Accepted |
| Commit | 976c1de1de147bb7f4e0d87482f375221c05aeaf |
| Headers | show |
| Series | [1/2] spi: spi-fsl-dspi: Fix issue with uninitialized dma_slave_config | expand |
diff --git a/drivers/spi/spi-pic32.c b/drivers/spi/spi-pic32.c --- a/drivers/spi/spi-pic32.c +++ b/drivers/spi/spi-pic32.c @@ -361,6 +361,7 @@ static int pic32_spi_dma_config(struct pic32_spi *pic32s, u32 dma_width) struct dma_slave_config cfg; int ret; + memset(&cfg, 0, sizeof(cfg)); cfg.device_fc = true; cfg.src_addr = pic32s->dma_base + buf_offset; cfg.dst_addr = pic32s->dma_base + buf_offset;
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-pic32, this is probably not currently an issue but is still good to fix though. Fixes: 1bcb9f8ceb67 ("spi: spi-pic32: Add PIC32 SPI master driver") Cc: Purna Chandra Mandal <purna.mandal@microchip.com> Cc: Peter Ujfalusi <peter.ujfalusi@gmail.com> Cc: Vinod Koul <vkoul@kernel.org> Signed-off-by: Tony Lindgren <tony@atomide.com> --- drivers/spi/spi-pic32.c | 1 + 1 file changed, 1 insertion(+)