From: Joerg Roedel <joerg.roedel@amd.com>
Date: Tue, 26 Jun 2012 14:59:34 +0000 (+0200)
Subject: iommu/irq: Use amd_iommu_irq_ops if supported
X-Git-Tag: firefly_0821_release~3680^2~1897^2^6~4
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=c18d2388170132ce015475f1fdab272b62c1e2da;p=firefly-linux-kernel-4.4.55.git

iommu/irq: Use amd_iommu_irq_ops if supported

Finally enable interrupt remapping for AMD systems.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---

diff --git a/drivers/iommu/irq_remapping.c b/drivers/iommu/irq_remapping.c
index 151690db692c..faf85d6e33fe 100644
--- a/drivers/iommu/irq_remapping.c
+++ b/drivers/iommu/irq_remapping.c
@@ -51,6 +51,11 @@ early_param("intremap", setup_irqremap);
 void __init setup_irq_remapping_ops(void)
 {
 	remap_ops = &intel_irq_remap_ops;
+
+#ifdef CONFIG_AMD_IOMMU
+	if (amd_iommu_irq_ops.prepare() == 0)
+		remap_ops = &amd_iommu_irq_ops;
+#endif
 }
 
 int irq_remapping_supported(void)