netdev - [net 1/3] e1000e: fix pci-device enable-counter balance

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <1362654925-26088-2-git-send-email-jeffrey.t.kirsher@intel.com>
Date:	Thu,  7 Mar 2013 03:15:23 -0800
From:	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
To:	davem@...emloft.net
Cc:	Konstantin Khlebnikov <khlebnikov@...nvz.org>,
	netdev@...r.kernel.org, gospo@...hat.com, sassmann@...hat.com,
	Bruce Allan <bruce.w.allan@...el.com>,
	Stable <stable@...nel.org>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>
Subject: [net 1/3] e1000e: fix pci-device enable-counter balance

From: Konstantin Khlebnikov <khlebnikov@...nvz.org>

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

Cc: Bruce Allan <bruce.w.allan@...el.com>
CC: Stable <stable@...nel.org>
Signed-off-by: Konstantin Khlebnikov <khlebnikov@...nvz.org>
Acked-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Tested-by: Borislav Petkov <bp@...e.de>
Tested-by: Aaron Brown <aaron.f.brown@...el.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@...el.com>
---
 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;
 }
-- 
1.7.11.7

--
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html