Messages in this thread Patch in this message | | | From | Nicolas Ferre <> | Subject | [PATCH 1/3] USB: host: ohci-at91: completely shutdown the controller in at91_stop_hc() | Date | Wed, 11 Sep 2019 08:41:52 +0200 |
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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 --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, ®s->control); + usb_hcd_platform_shutdown(pdev); /* * Stop the USB clocks. -- 2.17.1
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