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[v5,01/16] swiotlb: Fix the type of index

Message ID 20210422081508.3942748-2-tientzu@chromium.org (mailing list archive)
State New, archived
Headers show
Series Restricted DMA | expand

Commit Message

Claire Chang April 22, 2021, 8:14 a.m. UTC 
Fix the type of index from unsigned int to int since find_slots() might
return -1.

Fixes: 0774983bc923 ("swiotlb: refactor swiotlb_tbl_map_single")
Signed-off-by: Claire Chang <tientzu@chromium.org>
---
 kernel/dma/swiotlb.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)
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Patch

diff --git a/kernel/dma/swiotlb.c b/kernel/dma/swiotlb.c
index 0a5b6f7e75bc..8635a57f88e9 100644
--- a/kernel/dma/swiotlb.c
+++ b/kernel/dma/swiotlb.c
@@ -499,7 +499,8 @@  phys_addr_t swiotlb_tbl_map_single(struct device *dev, phys_addr_t orig_addr,
 {
 	struct io_tlb_mem *mem = io_tlb_default_mem;
 	unsigned int offset = swiotlb_align_offset(dev, orig_addr);
-	unsigned int index, i;
+	unsigned int i;
+	int index;
 	phys_addr_t tlb_addr;
 
 	if (!mem)