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Subject[PATCH 2/3] USB: host: ohci-at91: suspend: delay needed before to stop clocks
Date
In order to completely remove marginal power consumption in PM suspend,
we need to let the controller settle down before being stopped.
In ohci_hcd_at91_drv_suspend() function, one additional delay is needed before
to stop the clocks.

Reported-by: Boris Krasnovskiy <Boris.Krasnovskiy@lairdconnect.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
---
drivers/usb/host/ohci-at91.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index cb63bcd5049a..85d67fe42d59 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -628,6 +628,7 @@ ohci_hcd_at91_drv_suspend(struct device *dev)

/* flush the writes */
(void) ohci_readl (ohci, &ohci->regs->control);
+ msleep(1);
at91_stop_clock(ohci_at91);
}

--
2.17.1
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