diff mbox series

[1/3] USB: host: ohci-at91: completely shutdown the controller in at91_stop_hc()

Message ID 20190911064154.28633-2-nicolas.ferre@microchip.com (mailing list archive)
State Mainlined
Commit 9c4567fa0a44e3733f49f93a2197d9907b836d4a
Headers show
Series USB: host: ohci-at91: tailor power consumption | expand

Commit Message

Nicolas Ferre Sept. 11, 2019, 6:41 a.m. UTC 
From: Boris Krasnovskiy <Boris.Krasnovskiy@lairdconnect.com>

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>
---
 drivers/usb/host/ohci-at91.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
diff mbox series

Patch

diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c
index fc35a7993b7b..cb63bcd5049a 100644
--- a/drivers/usb/host/ohci-at91.c
+++ b/drivers/usb/host/ohci-at91.c
@@ -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.