From: Weidong Han <weidong.han@intel.com>
Date: Mon, 8 Dec 2008 03:24:12 +0000 (+0800)
Subject: Get iommu from g_iommus for deferred flush
X-Git-Tag: v3.12-rc1~16820^2~28
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=a2bb8459fe46e5aaad6637b31b5593d740097cba;p=kernel%2Fkernel-generic.git

Get iommu from g_iommus for deferred flush

deferred_flush[] uses the iommu seq_id to index, so its iommu is fixed and can get it from g_iommus.

Signed-off-by: Weidong Han <weidong.han@intel.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
---

diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c
index d2ffa7a..86b9f58 100644
--- a/drivers/pci/intel-iommu.c
+++ b/drivers/pci/intel-iommu.c
@@ -2101,10 +2101,11 @@ static void flush_unmaps(void)
 
 	/* just flush them all */
 	for (i = 0; i < g_num_of_iommus; i++) {
-		if (deferred_flush[i].next) {
-			struct intel_iommu *iommu =
-				deferred_flush[i].domain[0]->iommu;
+		struct intel_iommu *iommu = g_iommus[i];
+		if (!iommu)
+			continue;
 
+		if (deferred_flush[i].next) {
 			iommu->flush.flush_iotlb(iommu, 0, 0, 0,
 						 DMA_TLB_GLOBAL_FLUSH, 0);
 			for (j = 0; j < deferred_flush[i].next; j++) {