[ 15/21] e1000e: fix pci-device enable-counter balance

From: Greg Kroah-Hartman
Date: Tue Mar 12 2013 - 18:45:42 EST


3.0-stable review patch. If anyone has any objections, please let me know.

------------------

From: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx>

commit 4e0855dff094b0d56d6b5b271e0ce7851cc1e063 upstream.

This patch removes redundant and unbalanced pci_disable_device() from
__e1000_shutdown(). pci_clear_master() is enough, device can go into
suspended state with elevated enable_cnt.

Bug was introduced in commit 23606cf5d1192c2b17912cb2ef6e62f9b11de133
("e1000e / PCI / PM: Add basic runtime PM support (rev. 4)") in v2.6.35

Signed-off-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxx>
Cc: Bruce Allan <bruce.w.allan@xxxxxxxxx>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Tested-by: Borislav Petkov <bp@xxxxxxx>
Tested-by: Aaron Brown <aaron.f.brown@xxxxxxxxx>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@xxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/net/e1000e/netdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/net/e1000e/netdev.c
+++ b/drivers/net/e1000e/netdev.c
@@ -5330,7 +5330,7 @@ static int __e1000_shutdown(struct pci_d
*/
e1000e_release_hw_control(adapter);

- pci_disable_device(pdev);
+ pci_clear_master(pdev);

return 0;
}


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