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authorJiang Liu <jiang.liu@linux.intel.com>2014-07-11 10:19:33 +0400
committerJoerg Roedel <jroedel@suse.de>2014-07-23 18:04:47 +0400
commit2a41ccee2fdc39df5bdcf5819ed3c0b4a62aea43 (patch)
tree3e013968eaccfa9afb7cf0edb10c148922fb5f10 /drivers/iommu
parent8594d83261d14754288ef00993f0971131ff08eb (diff)
downloadlinux-2a41ccee2fdc39df5bdcf5819ed3c0b4a62aea43.tar.xz
iommu/vt-d: Change iommu_enable/disable_translation to return void
Simplify error handling path by changing iommu_{enable|disable}_translation to return void. Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com> Signed-off-by: Joerg Roedel <jroedel@suse.de>
Diffstat (limited to 'drivers/iommu')
-rw-r--r--drivers/iommu/intel-iommu.c18
1 files changed, 5 insertions, 13 deletions
diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 5d7383775bf1..0ba078bc0f32 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -1389,7 +1389,7 @@ static void iommu_disable_protect_mem_regions(struct intel_iommu *iommu)
raw_spin_unlock_irqrestore(&iommu->register_lock, flags);
}
-static int iommu_enable_translation(struct intel_iommu *iommu)
+static void iommu_enable_translation(struct intel_iommu *iommu)
{
u32 sts;
unsigned long flags;
@@ -1403,10 +1403,9 @@ static int iommu_enable_translation(struct intel_iommu *iommu)
readl, (sts & DMA_GSTS_TES), sts);
raw_spin_unlock_irqrestore(&iommu->register_lock, flags);
- return 0;
}
-static int iommu_disable_translation(struct intel_iommu *iommu)
+static void iommu_disable_translation(struct intel_iommu *iommu)
{
u32 sts;
unsigned long flag;
@@ -1420,7 +1419,6 @@ static int iommu_disable_translation(struct intel_iommu *iommu)
readl, (!(sts & DMA_GSTS_TES)), sts);
raw_spin_unlock_irqrestore(&iommu->register_lock, flag);
- return 0;
}
@@ -2860,11 +2858,7 @@ static int __init init_dmars(void)
iommu->flush.flush_context(iommu, 0, 0, 0, DMA_CCMD_GLOBAL_INVL);
iommu->flush.flush_iotlb(iommu, 0, 0, 0, DMA_TLB_GLOBAL_FLUSH);
-
- ret = iommu_enable_translation(iommu);
- if (ret)
- goto free_iommu;
-
+ iommu_enable_translation(iommu);
iommu_disable_protect_mem_regions(iommu);
}
@@ -3578,10 +3572,8 @@ static int init_iommu_hw(void)
iommu->flush.flush_context(iommu, 0, 0, 0,
DMA_CCMD_GLOBAL_INVL);
- iommu->flush.flush_iotlb(iommu, 0, 0, 0,
- DMA_TLB_GLOBAL_FLUSH);
- if (iommu_enable_translation(iommu))
- return 1;
+ iommu->flush.flush_iotlb(iommu, 0, 0, 0, DMA_TLB_GLOBAL_FLUSH);
+ iommu_enable_translation(iommu);
iommu_disable_protect_mem_regions(iommu);
}