From 4099818842abd98ef2b18a8ac7a2e2ad3bc3d7c2 Mon Sep 17 00:00:00 2001 From: Ohad Ben-Cohen Date: Fri, 2 Sep 2011 13:32:32 -0400 Subject: [PATCH] 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 Signed-off-by: Joerg Roedel --- drivers/iommu/iommu.c | 9 +++------ 1 file 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 #include #include #include @@ -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); } -- 2.34.1