From: Tony Lindgren Date: Tue, 10 Aug 2021 08:17:27 +0000 (+0300) Subject: spi: spi-pic32: Fix issue with uninitialized dma_slave_config X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=2598ed42f77178c425ebf65642f177e44be2328f;p=GitHub%2FLineageOS%2FG12%2Fandroid_kernel_amlogic_linux-4.9.git spi: spi-pic32: Fix issue with uninitialized dma_slave_config [ Upstream commit 976c1de1de147bb7f4e0d87482f375221c05aeaf ] 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 Cc: Peter Ujfalusi Cc: Vinod Koul Signed-off-by: Tony Lindgren Link: https://lore.kernel.org/r/20210810081727.19491-2-tony@atomide.com Signed-off-by: Mark Brown Signed-off-by: Sasha Levin --- diff --git a/drivers/spi/spi-pic32.c b/drivers/spi/spi-pic32.c index 9a97ad973c41..021dddf484e5 100644 --- a/drivers/spi/spi-pic32.c +++ b/drivers/spi/spi-pic32.c @@ -369,6 +369,7 @@ 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;