diff mbox series

[v2,1/2] dmaengine: tegra: Fix uninitialized variable usage

Message ID 20220426101913.43335-2-akhilrajeev@nvidia.com (mailing list archive)
State Accepted
Commit ac41f28053e0285f424095f631804d6eb6e9cd8e
Headers show
Series Fix uninitialized variable usage in Tegra GPCDMA | expand

Commit Message

Akhil R April 26, 2022, 10:19 a.m. UTC 
Initialize slave_bw in dma_prep*() functions as the parameter is not
set for DMA_MEM_TO_MEM case in get_transfer_param(). Though the case
may never occur, initializing it avoids warning from certain static
checkers

Fixes: ee17028009d4 ("dmaengine: tegra: Add tegra gpcdma driver")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Akhil R <akhilrajeev@nvidia.com>
---
 drivers/dma/tegra186-gpc-dma.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
diff mbox series

Patch

diff --git a/drivers/dma/tegra186-gpc-dma.c b/drivers/dma/tegra186-gpc-dma.c
index f12327732041..a0dbafa07ec9 100644
--- a/drivers/dma/tegra186-gpc-dma.c
+++ b/drivers/dma/tegra186-gpc-dma.c
@@ -985,8 +985,8 @@  tegra_dma_prep_slave_sg(struct dma_chan *dc, struct scatterlist *sgl,
 {
 	struct tegra_dma_channel *tdc = to_tegra_dma_chan(dc);
 	unsigned int max_dma_count = tdc->tdma->chip_data->max_dma_count;
+	enum dma_slave_buswidth slave_bw = DMA_SLAVE_BUSWIDTH_UNDEFINED;
 	u32 csr, mc_seq, apb_ptr = 0, mmio_seq = 0;
-	enum dma_slave_buswidth slave_bw;
 	struct tegra_dma_sg_req *sg_req;
 	struct tegra_dma_desc *dma_desc;
 	struct scatterlist *sg;
@@ -1103,12 +1103,12 @@  tegra_dma_prep_dma_cyclic(struct dma_chan *dc, dma_addr_t buf_addr, size_t buf_l
 			  size_t period_len, enum dma_transfer_direction direction,
 			  unsigned long flags)
 {
+	enum dma_slave_buswidth slave_bw = DMA_SLAVE_BUSWIDTH_UNDEFINED;
+	u32 csr, mc_seq, apb_ptr = 0, mmio_seq = 0, burst_size;
+	unsigned int max_dma_count, len, period_count, i;
 	struct tegra_dma_channel *tdc = to_tegra_dma_chan(dc);
 	struct tegra_dma_desc *dma_desc;
 	struct tegra_dma_sg_req *sg_req;
-	enum dma_slave_buswidth slave_bw;
-	u32 csr, mc_seq, apb_ptr = 0, mmio_seq = 0, burst_size;
-	unsigned int max_dma_count, len, period_count, i;
 	dma_addr_t mem = buf_addr;
 	int ret;