diff options
| author | Felipe Balbi <balbi@ti.com> | 2012-06-06 06:19:35 (GMT) |
|---|---|---|
| committer | Felipe Balbi <balbi@ti.com> | 2012-06-06 08:22:32 (GMT) |
| commit | 3336abb5b608300550136ddab7a7101b30d45fa7 (patch) | |
| tree | e3f32bae199ed50cc5a8cca8c5cc313b8e52e739 /drivers/usb/dwc3/gadget.c | |
| parent | 1e2360eadaa33c09bb72afb14f74b6c6ab2aca66 (diff) | |
| download | linux-fsl-qoriq-3336abb5b608300550136ddab7a7101b30d45fa7.tar.xz | |
usb: dwc3: gadget: ignore endpoint IRQs when endpoint is disabled
By the time we're disabling the endpoint, HW
could already have posted more events to our
event buffer. In that case, we will receive
endpoint events for a disabled endpoint.
In order to protect ourselves from that situation,
we simply ignore endpoint interrupts whenever
the endpoint is disabled.
Tested-by: Pratyush Anand <pratyush.anand@st.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Diffstat (limited to 'drivers/usb/dwc3/gadget.c')
| -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 52d0f67..8e00756 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -1768,6 +1768,9 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc, dep = dwc->eps[epnum]; + if (!(dep->flags & DWC3_EP_ENABLED)) + return; + dev_vdbg(dwc->dev, "%s: %s\n", dep->name, dwc3_ep_event_string(event->endpoint_event)); |