Commit 192cb07f authored Jan 11, 2016 by John Youn Committed by Felipe Balbi Feb 03, 2016

usb: dwc2: Fix probe problem on bcm2835



Fixes an issue found on Raspberry PI platform that prevents probe. Don't
skip setting the force mode if it's already set.

Fixes: 09c96980 ("usb: dwc2: Add functions to set and clear force mode")
Tested-by: Heiko Stuebner <heiko@sntech.de>
Tested-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: John Youn <johnyoun@synopsys.com>
Reported-by: Stefan Wahren <stefan.wahren@i2se.com>
Reported-by: Remi Pommarel <repk@triplefau.lt>
Tested-by: Stefan Wahren <stefan.wahren@i2se.com>
Tested-by: Remi Pommarel <repk@triplefau.lt>
Signed-off-by: Felipe Balbi <balbi@kernel.org>

parent 03b32e4c

drivers/usb/dwc2/core.c

+0 −6

Original line number	Diff line number	Diff line
		@@ -572,12 +572,6 @@ static bool dwc2_force_mode(struct dwc2_hsotg *hsotg, bool host)
		set = host ? GUSBCFG_FORCEHOSTMODE : GUSBCFG_FORCEDEVMODE;
		clear = host ? GUSBCFG_FORCEDEVMODE : GUSBCFG_FORCEHOSTMODE;

		/*
		* If the force mode bit is already set, don't set it.
		*/
		if ((gusbcfg & set) && !(gusbcfg & clear))
		return false;

		gusbcfg &= ~clear;
		gusbcfg \|= set;
		dwc2_writel(gusbcfg, hsotg->regs + GUSBCFG);

Admin message