---

yaml --- r: 109969 b: refs/heads/master c: 7e4f88d h: refs/heads/master i: 109967: 6603599 v: v3
git-mirror · Sep 18, 2008 · 9856bfd · 9856bfd
1 parent 601f425
commit 9856bfd
Show file tree

Hide file tree

Showing 2 changed files with 9 additions and 5 deletions.
diff --git a/[refs] b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: ee2fa7435b6dddf1ca119f298ad0100cf50c0397
+refs/heads/master: 7e4f88da7bf1887563f70bd5edbbd0479e31dc12
diff --git a/trunk/arch/x86/kernel/amd_iommu.c b/trunk/arch/x86/kernel/amd_iommu.c
@@ -101,21 +101,23 @@ static int iommu_queue_command(struct amd_iommu *iommu, struct iommu_cmd *cmd)
  */
 static int iommu_completion_wait(struct amd_iommu *iommu)
 {
-	int ret, ready = 0;
+	int ret = 0, ready = 0;
 	unsigned status = 0;
 	struct iommu_cmd cmd;
-	unsigned long i = 0;
+	unsigned long flags, i = 0;
 
 	memset(&cmd, 0, sizeof(cmd));
 	cmd.data[0] = CMD_COMPL_WAIT_INT_MASK;
 	CMD_SET_TYPE(&cmd, CMD_COMPL_WAIT);
 
 	iommu->need_sync = 0;
 
-	ret = iommu_queue_command(iommu, &cmd);
+	spin_lock_irqsave(&iommu->lock, flags);
+
+	ret = __iommu_queue_command(iommu, &cmd);
 
 	if (ret)
-		return ret;
+		goto out;
 
 	while (!ready && (i < EXIT_LOOP_COUNT)) {
 		++i;
@@ -130,6 +132,8 @@ static int iommu_completion_wait(struct amd_iommu *iommu)
 
 	if (unlikely((i == EXIT_LOOP_COUNT) && printk_ratelimit()))
 		printk(KERN_WARNING "AMD IOMMU: Completion wait loop failed\n");
+out:
+	spin_unlock_irqrestore(&iommu->lock, flags);
 
 	return 0;
 }