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authorPaul Bolle <pebolle@tiscali.nl>2013-07-20 20:05:05 +0200
committerDan Williams <djbw@fb.com>2013-08-23 00:21:44 -0700
commite6a5fa63407bfc5b7b13e850a0a67e4db8c00ce7 (patch)
treeeecbc5158592733598d06048cc518196b1fa4a75
parentc4d27c4d024f5440497106bb2ae15e9e60f7099c (diff)
downloadop-kernel-dev-e6a5fa63407bfc5b7b13e850a0a67e4db8c00ce7.zip
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ioatdma: silence GCC warnings
Building dma_v3.o triggers a GCC warning: drivers/dma/ioat/dma_v3.c: In function ‘__ioat3_prep_pq16_lock’: drivers/dma/ioat/dma_v3.c:264:11: warning: array subscript is below array bounds [-Warray-bounds] drivers/dma/ioat/dma_v3.c:264:11: warning: array subscript is below array bounds [-Warray-bounds] This warning is caused by pq16_set_src(). It uses "int idx" as an index to an eight element array. Changing "idx" to "unsigned" silences this warning. Apparently GCC can then determine that "idx" will never be negative. Signed-off-by: Paul Bolle <pebolle@tiscali.nl> Acked-by: Dave Jiang <dave.jiang@intel.com> Signed-off-by: Dan Williams <djbw@fb.com>
-rw-r--r--drivers/dma/ioat/dma_v3.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/dma/ioat/dma_v3.c b/drivers/dma/ioat/dma_v3.c
index c94e0d2..d8ececaf 100644
--- a/drivers/dma/ioat/dma_v3.c
+++ b/drivers/dma/ioat/dma_v3.c
@@ -251,7 +251,7 @@ static bool is_bwd_noraid(struct pci_dev *pdev)
}
static void pq16_set_src(struct ioat_raw_descriptor *desc[3],
- dma_addr_t addr, u32 offset, u8 coef, int idx)
+ dma_addr_t addr, u32 offset, u8 coef, unsigned idx)
{
struct ioat_pq_descriptor *pq = (struct ioat_pq_descriptor *)desc[0];
struct ioat_pq16a_descriptor *pq16 =
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