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authorIngo Molnar <mingo@kernel.org>2013-04-21 10:57:33 +0200
committerIngo Molnar <mingo@kernel.org>2013-04-21 10:57:33 +0200
commit73e21ce28d8d2b75140b742b01373c3a085ecc52 (patch)
treeadd380154271f9a68be4099590f912b4ab4bed9f /drivers/pci/pci-driver.c
parentb5210b2a34bae35fc00675462333af45676d727c (diff)
parentf1923820c447e986a9da0fc6bf60c1dccdf0408e (diff)
Merge branch 'perf/urgent' into perf/core
Conflicts: arch/x86/kernel/cpu/perf_event_intel.c Merge in the latest fixes before applying new patches, resolve the conflict. Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/pci/pci-driver.c')
-rw-r--r--drivers/pci/pci-driver.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index 1fa1e482a99..79277fb36c6 100644
--- a/drivers/pci/pci-driver.c
+++ b/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