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AMD IOMMU: remove unnecessary cast to u64 in the init code 

The ctrl variable is only u32 and readl also returns a 32 bit value. So
the cast to u64 is pointless. Remove it with this patch.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Joerg Roedel 2008-09-17 16:45:59 +02:00 committed by Ingo Molnar
parent d58befd3a0
commit 199d0d5012
1 changed files with 1 additions and 1 deletions
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2
arch/x86/kernel/amd_iommu_init.c
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@ -235,7 +235,7 @@ static void __init iommu_feature_disable(struct amd_iommu *iommu, u8 bit)
{
u32 ctrl;
ctrl = (u64)readl(iommu->mmio_base + MMIO_CONTROL_OFFSET);
ctrl = readl(iommu->mmio_base + MMIO_CONTROL_OFFSET);
ctrl &= ~(1 << bit);
writel(ctrl, iommu->mmio_base + MMIO_CONTROL_OFFSET);
}