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authorRobin Murphy <robin.murphy@arm.com>2018-03-29 14:24:52 +0300
committerJoerg Roedel <jroedel@suse.de>2018-03-29 16:19:10 +0300
commit7868805969942a424118b7da5233946e53ce69be (patch)
tree853ed7cdbd3ed4b9bcd2764d710c63ea7b92adc3 /drivers/iommu
parent1543f226335bae25e157fd1e33f43f54458d29c2 (diff)
downloadlinux-7868805969942a424118b7da5233946e53ce69be.tar.xz
iommu/io-pgtable-arm: Avoid warning with 32-bit phys_addr_t
It's not entirely unreasonable for io-pgtable-arm to be built for configurations with 32-bit phys_addr_t, where the compiler rightly raises a warning about the 36-bit shift. That particular code path should never actually *run* on those systems, but we still want it to compile cleanly, which is easily done by using an unambiguous u64 as the intermediate type instead. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/io-pgtable-arm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iommu/io-pgtable-arm.c b/drivers/iommu/io-pgtable-arm.c
index a5be4c92c5c8..47b64d3b833f 100644
--- a/drivers/iommu/io-pgtable-arm.c
+++ b/drivers/iommu/io-pgtable-arm.c
@@ -211,7 +211,7 @@ static arm_lpae_iopte paddr_to_iopte(phys_addr_t paddr,
static phys_addr_t iopte_to_paddr(arm_lpae_iopte pte,
struct arm_lpae_io_pgtable *data)
{
- phys_addr_t paddr = pte & ARM_LPAE_PTE_ADDR_MASK;
+ u64 paddr = pte & ARM_LPAE_PTE_ADDR_MASK;
if (data->pg_shift < 16)
return paddr;