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| author | Robin Murphy <robin.murphy@arm.com> | 2018-03-29 12:24:52 +0100 |
|---|---|---|
| committer | Joerg Roedel <jroedel@suse.de> | 2018-03-29 15:19:10 +0200 |
| commit | 7868805969942a424118b7da5233946e53ce69be (patch) | |
| tree | 853ed7cdbd3ed4b9bcd2764d710c63ea7b92adc3 /drivers/iommu | |
| parent | 1543f226335bae25e157fd1e33f43f54458d29c2 (diff) | |
| download | linux-7868805969942a424118b7da5233946e53ce69be.tar.gz linux-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.c | 2 |
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; |