This fixes warning reported from sparse:
gwshan@gwshan:~/sandbox/l$ make C=2 CF=-D__CHECK_ENDIAN__ \
arch/powerpc/platforms/powernv/pci.o
arch/powerpc/platforms/powernv/pci.c:740:18: \
warning: cast from restricted __be64
arch/powerpc/platforms/powernv/pci.c:740:18: \
warning: cast to restricted __be64
arch/powerpc/platforms/powernv/pci.c:740:18: \
warning: cast from restricted __be64
arch/powerpc/platforms/powernv/pci.c:740:18: \
warning: cast to restricted __be64
Cc: Alexey Kardashevskiy <[email protected]>
Fixes: 802a345183c0 ("powerpc/powernv/ioda: Fix endianness when reading TCEs")
Signed-off-by: Gavin Shan <[email protected]>
---
arch/powerpc/platforms/powernv/pci.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/arch/powerpc/platforms/powernv/pci.c
b/arch/powerpc/platforms/powernv/pci.c
index 9a26a57..4e385f9 100644
--- a/arch/powerpc/platforms/powernv/pci.c
+++ b/arch/powerpc/platforms/powernv/pci.c
@@ -737,7 +737,9 @@ int pnv_tce_xchg(struct iommu_table *tbl, long index,
if (newtce & TCE_PCI_WRITE)
newtce |= TCE_PCI_READ;
- oldtce = be64_to_cpu(xchg(pnv_tce(tbl, idx), cpu_to_be64(newtce)));
+ oldtce = be64_to_cpu((__force __be64)xchg(
+ (unsigned long *)pnv_tce(tbl, idx),
+ (__force unsigned long)cpu_to_be64(newtce)));
*hpa = oldtce & ~(TCE_PCI_READ | TCE_PCI_WRITE);
*direction = iommu_tce_direction(oldtce);
--
2.1.0
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