diff options
| author | Ohad Ben-Cohen <ohad@wizery.com> | 2011-09-02 13:32:32 -0400 |
|---|---|---|
| committer | Hiroshi DOYU <hdoyu@nvidia.com> | 2012-01-23 11:11:32 +0200 |
| commit | 9bedc101168cb42071107d55e75cf4a12275b339 (patch) | |
| tree | 0eb3551fe2abdcdff538eff56bf255c8d9baef08 /drivers/iommu/iommu.c | |
| parent | bdb194167f60d6217867c139c4e31a1361bbdf3d (diff) | |
iommu/core: use the existing IS_ALIGNED macro
Replace iommu's alignment checks with the existing IS_ALIGNED macro,
to drop a few lines of code and utilize IS_ALIGNED's type safety.
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/iommu/iommu.c')
| -rw-r--r-- | drivers/iommu/iommu.c | 9 |
1 files changed, 3 insertions, 6 deletions
diff --git a/drivers/iommu/iommu.c b/drivers/iommu/iommu.c index 6e6b6a11b3ce..e61a9bad6df3 100644 --- a/drivers/iommu/iommu.c +++ b/drivers/iommu/iommu.c @@ -16,6 +16,7 @@ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA */ +#include <linux/kernel.h> #include <linux/bug.h> #include <linux/types.h> #include <linux/module.h> @@ -97,13 +98,11 @@ EXPORT_SYMBOL_GPL(iommu_domain_has_cap); int iommu_map(struct iommu_domain *domain, unsigned long iova, phys_addr_t paddr, int gfp_order, int prot) { - unsigned long invalid_mask; size_t size; size = 0x1000UL << gfp_order; - invalid_mask = size - 1; - BUG_ON((iova | paddr) & invalid_mask); + BUG_ON(!IS_ALIGNED(iova | paddr, size)); return iommu_ops->map(domain, iova, paddr, gfp_order, prot); } @@ -111,13 +110,11 @@ EXPORT_SYMBOL_GPL(iommu_map); int iommu_unmap(struct iommu_domain *domain, unsigned long iova, int gfp_order) { - unsigned long invalid_mask; size_t size; size = 0x1000UL << gfp_order; - invalid_mask = size - 1; - BUG_ON(iova & invalid_mask); + BUG_ON(!IS_ALIGNED(iova, size)); return iommu_ops->unmap(domain, iova, gfp_order); } |