diff options
| author | Roger Quadros <rogerq@ti.com> | 2018-02-27 12:54:37 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-24 09:36:26 +0200 |
| commit | 30e9a1cddc4d4ef881515ff128c2c707ef81573d (patch) | |
| tree | 12987bd8204abc2340f92fe38f26deaa85b08c56 /drivers/usb/dwc3/core.c | |
| parent | f7f9187a110e58c0b9988db972a0631d06c7633f (diff) | |
usb: dwc3: prevent setting PRTCAP to OTG from debugfs
commit daaecc6541d014dca073473ec8a4120c0babbeb4 upstream.
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: <stable@vger.kernel.org> # v4.12+
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc3/core.c')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c index 3219d8157f5b..c3f3f1a89b0f 100644 --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -128,6 +128,9 @@ 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); |