diff options
| author | Thinh Nguyen <Thinh.Nguyen@synopsys.com> | 2019-10-24 05:15:55 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-01-15 12:39:20 +0300 |
| commit | 2e708fa3b8987a6a76853cd4deaee990095a7b20 (patch) | |
| tree | 0062ef02bacfec9be54e9920054d8410a47ea013 /drivers | |
| parent | 1b6009ea88ec3657792c6d15e33990abf2b907b0 (diff) | |
| download | linux-2e708fa3b8987a6a76853cd4deaee990095a7b20.tar.xz | |
usb: dwc3: gadget: Clear DCTL.ULSTCHNGREQ before set
Send a no-action link state change request before the actual request
so DWC3 can send the same request whenever we call
dwc3_gadget_set_link_state().
Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index caf12fd71e73..edc478c20846 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -111,6 +111,9 @@ int dwc3_gadget_set_link_state(struct dwc3 *dwc, enum dwc3_link_state state) reg = dwc3_readl(dwc->regs, DWC3_DCTL); reg &= ~DWC3_DCTL_ULSTCHNGREQ_MASK; + /* set no action before sending new link state change */ + dwc3_writel(dwc->regs, DWC3_DCTL, reg); + /* set requested state */ reg |= DWC3_DCTL_ULSTCHNGREQ(state); dwc3_writel(dwc->regs, DWC3_DCTL, reg); |