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authorJohn Youn <John.Youn@synopsys.com>2016-01-12 03:32:28 +0300
committerFelipe Balbi <balbi@kernel.org>2016-02-03 21:15:49 +0300
commit192cb07f7928e8cb09a9851e6c0f7478baa3bc6d (patch)
tree487796537df91d5babf9b7c8cc8b32e50232c8da /drivers/usb/dwc2/core.c
parent03b32e4c9bd1b52fcf1e4304e7a704aa0315e398 (diff)
downloadlinux-192cb07f7928e8cb09a9851e6c0f7478baa3bc6d.tar.xz
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>
Diffstat (limited to 'drivers/usb/dwc2/core.c')
-rw-r--r--drivers/usb/dwc2/core.c6
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);