From: Baoquan He Date: Tue, 20 Sep 2016 01:05:34 +0000 (+0800) Subject: iommu/amd: No need to wait iommu completion if no dte irq entry change X-Git-Tag: v4.9-rc1~44^2~1 X-Git-Url: https://git.kernel.dk/?a=commitdiff_plain;h=09284b9c4a80299b25b913c976dcaced09cc12f4;p=linux-block.git iommu/amd: No need to wait iommu completion if no dte irq entry change 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 Signed-off-by: Joerg Roedel --- diff --git a/drivers/iommu/amd_iommu.c b/drivers/iommu/amd_iommu.c index b5b117b44026..a2479d0df292 100644 --- a/drivers/iommu/amd_iommu.c +++ b/drivers/iommu/amd_iommu.c @@ -3634,7 +3634,7 @@ 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]; @@ -3648,7 +3648,7 @@ 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); @@ -3661,7 +3661,7 @@ static struct irq_remap_table *get_irq_table(u16 devid, bool ioapic) if (!table->table) { kfree(table); table = NULL; - goto out; + goto out_unlock; } if (!AMD_IOMMU_GUEST_IR_GA(amd_iommu_guest_ir))