x86, AMD IOMMU: remove unnecessary code from the iommu_enable function

This code removes a leftover from the iommu_enable function. The ctrl variable
is assigned but never used.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Cc: iommu@lists.linux-foundation.org
Cc: bhavna.sarathy@amd.com
Cc: robert.richter@amd.com
Cc: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/kernel/amd_iommu_init.c b/arch/x86/kernel/amd_iommu_init.c
index c970fac6fdc602999166935e0b3de885e090eb66..2a13e430437dc5f1e05793aa995df4befcbc8938 100644 (file)
--- a/arch/x86/kernel/amd_iommu_init.c
+++ b/arch/x86/kernel/amd_iommu_init.c
@@ -169,14 +169,11 @@ static void __init iommu_feature_disable(struct amd_iommu *iommu, u8 bit)
 
 void __init iommu_enable(struct amd_iommu *iommu)
 {
-       u32 ctrl;
-
        printk(KERN_INFO "AMD IOMMU: Enabling IOMMU at ");
        print_devid(iommu->devid, 0);
        printk(" cap 0x%hx\n", iommu->cap_ptr);
 
        iommu_feature_enable(iommu, CONTROL_IOMMU_EN);
-       ctrl = readl(iommu->mmio_base + MMIO_CONTROL_OFFSET);
 }
 
 static u8 * __init iommu_map_mmio_space(u64 address)