Initialize slave_bw and remove unused switch case in
get_transfer_param()
Fixes: ee17028009d4 ("dmaengine: tegra: Add tegra gpcdma driver")
Reported-by: Dan Carpenter <[email protected]>
Signed-off-by: Akhil R <[email protected]>
---
drivers/dma/tegra186-gpc-dma.c | 12 ++++--------
1 file changed, 4 insertions(+), 8 deletions(-)
diff --git a/drivers/dma/tegra186-gpc-dma.c b/drivers/dma/tegra186-gpc-dma.c
index f12327732041..6b8d34165176 100644
--- a/drivers/dma/tegra186-gpc-dma.c
+++ b/drivers/dma/tegra186-gpc-dma.c
@@ -830,10 +830,6 @@ static int get_transfer_param(struct tegra_dma_channel *tdc,
*slave_bw = tdc->dma_sconfig.src_addr_width;
*csr = TEGRA_GPCDMA_CSR_DMA_IO2MEM_FC;
return 0;
- case DMA_MEM_TO_MEM:
- *burst_size = tdc->dma_sconfig.src_addr_width;
- *csr = TEGRA_GPCDMA_CSR_DMA_MEM2MEM;
- return 0;
default:
dev_err(tdc2dev(tdc), "DMA direction is not supported\n");
}
@@ -985,8 +981,8 @@ 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 +1099,12 @@ 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;
--
2.17.1