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authorDavid Brownell <david-b@pacbell.net>2008-04-02 13:40:20 -0700
committerGreg Kroah-Hartman <gregkh@suse.de>2008-04-02 15:06:08 -0700
commitcdc647a9b75741659bfc6acc44a6b3a646ad53bf (patch)
treee5484d020ede1094bc4efd6299b2d14b475c522f
parent49115b7cb1483a14c557666b61fe81d3c23780d6 (diff)
USB: another ehci_iaa_watchdog fix
This patch, suggested by Alan Stern, fixes the hung USB issues on my notebook from suspend/resume cycles. It does so by eliminating some confusion about the internal state machine associated with unlinking from the EHCI async schedule ring, which caused a recent regression: http://bugzilla.kernel.org/show_bug.cgi?id=10345 Signed-off-by: Mark Lord <mlord@pobox.com> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
-rw-r--r--drivers/usb/host/ehci-hub.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/usb/host/ehci-hub.c b/drivers/usb/host/ehci-hub.c
index 40e8240b785..4e065e556e4 100644
--- a/drivers/usb/host/ehci-hub.c
+++ b/drivers/usb/host/ehci-hub.c
@@ -135,8 +135,6 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
hcd->state = HC_STATE_QUIESCING;
}
ehci->command = ehci_readl(ehci, &ehci->regs->command);
- if (ehci->reclaim)
- end_unlink_async(ehci);
ehci_work(ehci);
/* Unlike other USB host controller types, EHCI doesn't have
@@ -180,6 +178,9 @@ static int ehci_bus_suspend (struct usb_hcd *hcd)
ehci_halt (ehci);
hcd->state = HC_STATE_SUSPENDED;
+ if (ehci->reclaim)
+ end_unlink_async(ehci);
+
/* allow remote wakeup */
mask = INTR_MASK;
if (!device_may_wakeup(&hcd->self.root_hub->dev))