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USB: ohci-at91 refcount fix for irq wake enables 

The attached patch fixes the unbalanced calls to enable_irq_wake() and
disable_irq_wake() in the AT91 USB Host driver.

It should resolve these kernel messages:
  Unbalanced IRQ x wake disable
  BUG: warning at kernel/irq/manage.c:167/set_irq_wake()

(The original code was debugged before a bug in the genirq wakeup irq
logic was fixed by adding the IRQ wake enable/disable refcounting.
Not all code yet uses the bugfixed model.)

Signed-off-by: Andrew Victor <andrew@sanpeople.com>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
hifive-unleashed-5.1
Marc Pignat 2007-01-09 14:00:11 -08:00 committed by Greg Kroah-Hartman
parent f3f4906516
commit 6dde896e4e
1 changed files with 5 additions and 3 deletions
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8
drivers/usb/host/ohci-at91.c
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@ -170,7 +170,6 @@ static int usb_hcd_at91_remove(struct usb_hcd *hcd,
at91_stop_hc(pdev);
iounmap(hcd->regs);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
disable_irq_wake(hcd->irq);
clk_put(fclk);
clk_put(iclk);
@ -271,8 +270,6 @@ ohci_hcd_at91_drv_suspend(struct platform_device *pdev, pm_message_t mesg)
if (device_may_wakeup(&pdev->dev))
enable_irq_wake(hcd->irq);
else
disable_irq_wake(hcd->irq);
/*
* The integrated transceivers seem unable to notice disconnect,
@ -293,6 +290,11 @@ ohci_hcd_at91_drv_suspend(struct platform_device *pdev, pm_message_t mesg)
static int ohci_hcd_at91_drv_resume(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
if (device_may_wakeup(&pdev->dev))
disable_irq_wake(hcd->irq);
if (!clocked) {
clk_enable(iclk);
clk_enable(fclk);