From daaecc6541d014dca073473ec8a4120c0babbeb4 Mon Sep 17 00:00:00 2001 From: Roger Quadros Date: Tue, 27 Feb 2018 12:54:37 +0200 Subject: usb: dwc3: prevent setting PRTCAP to OTG from debugfs We don't support PRTCAP == OTG yet, so prevent user from setting it via debugfs. Fixes: 41ce1456e1db ("usb: dwc3: core: make dwc3_set_mode() work properly") Cc: # v4.12+ Signed-off-by: Roger Quadros Signed-off-by: Felipe Balbi --- drivers/usb/dwc3/core.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/usb/dwc3') diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index f1d838a4acd6..b014c87a7319 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -119,6 +119,9 @@ static void __dwc3_set_mode(struct work_struct *work) if (dwc->dr_mode != USB_DR_MODE_OTG) return; + if (dwc->desired_dr_role == DWC3_GCTL_PRTCAP_OTG) + return; + switch (dwc->current_dr_role) { case DWC3_GCTL_PRTCAP_HOST: dwc3_host_exit(dwc); -- cgit v1.2.1