From a27aa009c7908e819cdf682699f52b67982861fb Mon Sep 17 00:00:00 2001
From: Konstantin Khlebnikov <khlebnikov@openvz.org>
Date: Thu, 14 Mar 2013 18:49:37 +0400
Subject: [PATCH] --- yaml --- r: 362300 b: refs/heads/master c:
 6e0eda3c389887168455b92b6f7b48f552227067 h: refs/heads/master v: v3

---
 [refs]                         | 2 +-
 trunk/drivers/pci/pci-driver.c | 5 +++--
 2 files changed, 4 insertions(+), 3 deletions(-)

diff --git a/[refs] b/[refs]
index 63016badc32e..69ed22296e98 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: b8178f130e25c1bdac1c33e0996f1ff6e20ec08e
+refs/heads/master: 6e0eda3c389887168455b92b6f7b48f552227067
diff --git a/trunk/drivers/pci/pci-driver.c b/trunk/drivers/pci/pci-driver.c
index 1fa1e482a999..79277fb36c6b 100644
--- a/trunk/drivers/pci/pci-driver.c
+++ b/trunk/drivers/pci/pci-driver.c
@@ -390,9 +390,10 @@ static void pci_device_shutdown(struct device *dev)
 
 	/*
 	 * Turn off Bus Master bit on the device to tell it to not
-	 * continue to do DMA
+	 * continue to do DMA. Don't touch devices in D3cold or unknown states.
 	 */
-	pci_clear_master(pci_dev);
+	if (pci_dev->current_state <= PCI_D3hot)
+		pci_clear_master(pci_dev);
 }
 
 #ifdef CONFIG_PM