This is a note to let you know that I've just added the patch titled
PCI: EHCI: Fix crash during hibernation on ASUS computers
to the 3.0-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
pci-ehci-fix-crash-during-hibernation-on-asus-computers.patch
and it can be found in the queue-3.0 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 0b68c8e2c3afaf9807eb1ebe0ccfb3b809570aa4 Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <[email protected]>
Date: Sun, 12 Aug 2012 23:26:07 +0200
Subject: PCI: EHCI: Fix crash during hibernation on ASUS computers
From: "Rafael J. Wysocki" <[email protected]>
commit 0b68c8e2c3afaf9807eb1ebe0ccfb3b809570aa4 upstream.
Commit dbf0e4c (PCI: EHCI: fix crash during suspend on ASUS
computers) added a workaround for an ASUS suspend issue related to
USB EHCI and a bug in a number of ASUS BIOSes that attempt to shut
down the EHCI controller during system suspend if its PCI command
register doesn't contain 0 at that time.
It turns out that the same workaround is necessary in the analogous
hibernation code path, so add it.
References: https://bugzilla.kernel.org/show_bug.cgi?id=45811
Reported-and-tested-by: Oleksij Rempel <[email protected]>
Signed-off-by: Rafael J. Wysocki <[email protected]>
Signed-off-by: Bjorn Helgaas <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
drivers/pci/pci-driver.c | 7 +++++++
1 file changed, 7 insertions(+)
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -936,6 +936,13 @@ static int pci_pm_poweroff_noirq(struct
if (!pci_dev->state_saved && !pci_is_bridge(pci_dev))
pci_prepare_to_sleep(pci_dev);
+ /*
+ * The reason for doing this here is the same as for the analogous code
+ * in pci_pm_suspend_noirq().
+ */
+ if (pci_dev->class == PCI_CLASS_SERIAL_USB_EHCI)
+ pci_write_config_word(pci_dev, PCI_COMMAND, 0);
+
return 0;
}
Patches currently in stable-queue which might be from [email protected] are
queue-3.0/pci-ehci-fix-crash-during-hibernation-on-asus-computers.patch
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