mirror of
https://github.com/Fishwaldo/Star64_linux.git
synced 2025-03-18 05:04:04 +00:00
dmaengine: stm32-dma: fix stm32_dma_get_max_width
[ Upstream commitb20fd5fa31
] buf_addr parameter of stm32_dma_set_xfer_param function is a dma_addr_t. We only need to check the remainder of buf_addr/max_width, so, no need to use do_div and extra u64 addr. Use '%' instead. Fixes:e0ebdbdcb4
("dmaengine: stm32-dma: take address into account when computing max width") Signed-off-by: Amelie Delaunay <amelie.delaunay@foss.st.com> Link: https://lore.kernel.org/r/20211011094259.315023-3-amelie.delaunay@foss.st.com Signed-off-by: Vinod Koul <vkoul@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
parent
8f242d0943
commit
60c0a155d2
1 changed files with 1 additions and 2 deletions
|
@ -270,7 +270,6 @@ static enum dma_slave_buswidth stm32_dma_get_max_width(u32 buf_len,
|
|||
u32 threshold)
|
||||
{
|
||||
enum dma_slave_buswidth max_width;
|
||||
u64 addr = buf_addr;
|
||||
|
||||
if (threshold == STM32_DMA_FIFO_THRESHOLD_FULL)
|
||||
max_width = DMA_SLAVE_BUSWIDTH_4_BYTES;
|
||||
|
@ -281,7 +280,7 @@ static enum dma_slave_buswidth stm32_dma_get_max_width(u32 buf_len,
|
|||
max_width > DMA_SLAVE_BUSWIDTH_1_BYTE)
|
||||
max_width = max_width >> 1;
|
||||
|
||||
if (do_div(addr, max_width))
|
||||
if (buf_addr % max_width)
|
||||
max_width = DMA_SLAVE_BUSWIDTH_1_BYTE;
|
||||
|
||||
return max_width;
|
||||
|
|
Loading…
Add table
Reference in a new issue