diff options
| author | Felipe Balbi <balbi@ti.com> | 2014-04-16 10:30:33 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-06-30 20:11:53 -0700 |
| commit | 0d8b12fce9dc5fcb05adeae1e39924b746a68685 (patch) | |
| tree | a59d314a5eaabd145fa9aa507e89ecb6c1cbed1a /drivers | |
| parent | 2e739000204f883d8708d2855d57a051c9da66db (diff) | |
| download | lwn-0d8b12fce9dc5fcb05adeae1e39924b746a68685.tar.gz lwn-0d8b12fce9dc5fcb05adeae1e39924b746a68685.zip | |
usb: dwc3: gadget: clear stall when disabling endpoint
commit 687ef9817df7ed960d14575b9033dde3d04631fe upstream.
so it seems like DWC3 IP doesn't clear stalls
automatically when we disable an endpoint, because
of that, we _must_ make sure stalls are cleared
before clearing the proper bit in DALEPENA register.
Reported-by: Johannes Stezenbach <js@sig21.net>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/dwc3/gadget.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 2da0a5a2803a..09e9619ae381 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -586,6 +586,10 @@ static int __dwc3_gadget_ep_disable(struct dwc3_ep *dep) dwc3_remove_requests(dwc, dep); + /* make sure HW endpoint isn't stalled */ + if (dep->flags & DWC3_EP_STALL) + __dwc3_gadget_ep_set_halt(dep, 0); + reg = dwc3_readl(dwc->regs, DWC3_DALEPENA); reg &= ~DWC3_DALEPENA_EP(dep->number); dwc3_writel(dwc->regs, DWC3_DALEPENA, reg); |