[PATCH RESEND 1/3] e1000e: fix pci-device enable-counter balance

From: Konstantin Khlebnikov
Date: Mon Feb 25 2013 - 00:19:15 EST


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>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@xxxxxxxxx>
Cc: e1000-devel@xxxxxxxxxxxxxxxxxxxxx
Cc: Jeff Kirsher <jeffrey.t.kirsher@xxxxxxxxx>
Cc: Bruce Allan <bruce.w.allan@xxxxxxxxx>
---
drivers/net/ethernet/intel/e1000e/netdev.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/intel/e1000e/netdev.c b/drivers/net/ethernet/intel/e1000e/netdev.c
index a177b8b..1799021 100644
--- a/drivers/net/ethernet/intel/e1000e/netdev.c
+++ b/drivers/net/ethernet/intel/e1000e/netdev.c
@@ -5986,7 +5986,7 @@ static int __e1000_shutdown(struct pci_dev *pdev, bool *enable_wake,
*/
e1000e_release_hw_control(adapter);

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

return 0;
}

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