From: Joerg Roedel <joerg.roedel@amd.com>
Date: Thu, 19 Jul 2012 08:56:10 +0000 (+0200)
Subject: iommu/amd: Add missing spin_lock initialization
X-Git-Tag: v3.5.1~63
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=a29c227ce9bd49ad85a202ee6603d7a41cd096fd;p=karo-tx-linux.git

iommu/amd: Add missing spin_lock initialization

commit 2c13d47a1a7ee8808796016c617aef25fd1d1925 upstream.

Add missing spin_lock initialization in
amd_iommu_bind_pasid() function and make lockdep happy
again.

Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---

diff --git a/drivers/iommu/amd_iommu_v2.c b/drivers/iommu/amd_iommu_v2.c
index 036fe9bf157e..a1f1bc876043 100644
--- a/drivers/iommu/amd_iommu_v2.c
+++ b/drivers/iommu/amd_iommu_v2.c
@@ -681,6 +681,8 @@ int amd_iommu_bind_pasid(struct pci_dev *pdev, int pasid,
 
 	atomic_set(&pasid_state->count, 1);
 	init_waitqueue_head(&pasid_state->wq);
+	spin_lock_init(&pasid_state->lock);
+
 	pasid_state->task         = task;
 	pasid_state->mm           = get_task_mm(task);
 	pasid_state->device_state = dev_state;