diff options
| author | Ohad Ben-Cohen <ohad@wizery.com> | 2011-09-02 21:32:32 +0400 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2011-09-05 17:15:59 +0400 |
| commit | 4099818842abd98ef2b18a8ac7a2e2ad3bc3d7c2 (patch) | |
| tree | a7486a45b806b8cf42d8996e712ab4e9d31d620e /drivers/iommu | |
| parent | 403f81d8ee532c976d50a5e1051f14ec78ae8db3 (diff) | |
| download | linux-4099818842abd98ef2b18a8ac7a2e2ad3bc3d7c2.tar.xz | |
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')
| -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); } |