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usb: dwc2: Fix probe problem on bcm2835

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

Fixes: 09c96980dc ("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>
This commit is contained in:
John Youn 2016-01-11 16:32:28 -08:00 committed by Felipe Balbi
parent 03b32e4c9b
commit 192cb07f79
1 changed files with 0 additions and 6 deletions
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6
drivers/usb/dwc2/core.c
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@ -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);