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authorFelipe Balbi <balbi@ti.com>2012-06-06 09:19:35 +0300
committerFelipe Balbi <balbi@ti.com>2012-06-06 11:22:32 +0300
commit3336abb5b608300550136ddab7a7101b30d45fa7 (patch)
treee3f32bae199ed50cc5a8cca8c5cc313b8e52e739 /drivers/usb/dwc3
parent1e2360eadaa33c09bb72afb14f74b6c6ab2aca66 (diff)
downloadlinux-3336abb5b608300550136ddab7a7101b30d45fa7.tar.bz2
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')
-rw-r--r--drivers/usb/dwc3/gadget.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 52d0f67e33d5..8e00756ee522 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));