| Message ID | 20190911064154.28633-3-nicolas.ferre@microchip.com (mailing list archive) |
|---|---|
| State | Mainlined |
| Commit | a3bf4d6816556baa9a503c9232eb7e3f018ff8dc |
| Headers | show |
| Series | USB: host: ohci-at91: tailor power consumption | expand |
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); }
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(+)