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: 09c96980dc72 ("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>

1 files changed, 0 insertions, 6 deletions

diff --git a/drivers/usb/dwc2/core.c b/drivers/usb/dwc2/core.c
index 1489d315f287..e991d55914db 100644
--- a/drivers/usb/dwc2/core.c
+++ b/drivers/usb/dwc2/core.c
@@ -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);