This is a clean up. In get_irq_table() only if DTE entry is changed iommu_completion_wait() need be called. Otherwise no need to do it.
Signed-off-by: Baoquan He <b...@redhat.com> --- drivers/iommu/amd_iommu.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index a9f78c2..461c2fe 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3581,7 +3581,7 @@ static struct irq_remap_table *get_irq_table(u16 devid, bool ioapic) table = irq_lookup_table[devid]; if (table) - goto out; + goto out_unlock; alias = amd_iommu_alias_table[devid]; table = irq_lookup_table[alias]; @@ -3595,7 +3595,7 @@ static struct irq_remap_table *get_irq_table(u16 devid, bool ioapic) /* Nothing there yet, allocate new irq remapping table */ table = kzalloc(sizeof(*table), GFP_ATOMIC); if (!table) - goto out; + goto out_unlock; /* Initialize table spin-lock */ spin_lock_init(&table->lock); @@ -3608,7 +3608,7 @@ static struct irq_remap_table *get_irq_table(u16 devid, bool ioapic) if (!table->table) { kfree(table); table = NULL; - goto out; + goto out_unlock; } memset(table->table, 0, MAX_IRQS_PER_TABLE * sizeof(u32)); -- 2.5.5