From: Claire Chang <tientzu@xxxxxxxxxxxx>
[ Upstream commit 95b079d8215b83b37fa59341fda92fcb9392f14a ]
Fix the type of index from unsigned int to int since find_slots() might
return -1.
Fixes: 26a7e094783d ("swiotlb: refactor swiotlb_tbl_map_single")
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Signed-off-by: Claire Chang <tientzu@xxxxxxxxxxxx>
Signed-off-by: Konrad Rzeszutek Wilk <konrad@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
kernel/dma/swiotlb.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 33a2a702b152..b897756202df 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -579,7 +579,8 @@ phys_addr_t swiotlb_tbl_map_single(struct device *dev, phys_addr_t orig_addr,
enum dma_data_direction dir, unsigned long attrs)
{
unsigned int offset = swiotlb_align_offset(dev, orig_addr);
- unsigned int index, i;
+ unsigned int i;
+ int index;
phys_addr_t tlb_addr;
if (no_iotlb_memory)
--
2.30.2
