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USB: host: ohci-at91: resume: balance the clock start call 

There is a clock enable counter run away problem in resume ohci_at91. Code
enables clock that was never disabled in case of non wakeup interface. That
would make clock unstoppable in future.
Use proper alternative to start clocks only if they were stopped before.

Signed-off-by: Boris Krasnovskiy <Boris.Krasnovskiy@lairdconnect.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Link: https://lore.kernel.org/r/20190911064154.28633-4-nicolas.ferre@microchip.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Boris Krasnovskiy 2019-09-11 08:41:54 +02:00 committed by Greg Kroah-Hartman
parent a3bf4d6816
commit 87e8dfa6f7
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/host/ohci-at91.c
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@ -643,8 +643,8 @@ ohci_hcd_at91_drv_resume(struct device *dev)
if (ohci_at91->wakeup)
disable_irq_wake(hcd->irq);
at91_start_clock(ohci_at91);
else
at91_start_clock(ohci_at91);
ohci_resume(hcd, false);