Commit 9c4567fa authored Sep 11, 2019 by Boris Krasnovskiy Committed by Greg Kroah-Hartman Oct 04, 2019

USB: host: ohci-at91: completely shutdown the controller in at91_stop_hc()

When removing the ohci-at91 module, the fact of not running complete shutdown
of all the ports was keeping additional analog cells consuming power for no
reason.
Doing Reset (OHCI_HCR) to HcCommandStatus register is the way to go, but using
the OHCI controller shutdown procedure is just perfect for this.

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/20190911064154.28633-2-nicolas.ferre@microchip.com

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 5d88ef9e

drivers/usb/host/ohci-at91.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -123,7 +123,7 @@ static void at91_stop_hc(struct platform_device *pdev)
		/*
		* Put the USB host controller into reset.
		*/
		writel(0, &regs->control);
		usb_hcd_platform_shutdown(pdev);

		/*
		* Stop the USB clocks.