In case EP disabled pass only EPCPLT command
to be handled. In other case we could hit
Bug like below.
BUG: unable to handle kernel NULL pointer dereference at 0000000000000003
IP:
[<ffffffff81673428>] dwc3_thread_interrupt+0x11c8/0x1790
while dep->endpoint.desc is NULL.
Signed-off-by: Janusz Dziedzic <januszx.dziedzic@xxxxxxxxxxxxxxx>
---
drivers/usb/dwc3/gadget.c | 11 ++++++++---
1 file changed, 8 insertions(+), 3 deletions(-)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 6785595..d9d20b6 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2232,9 +2232,14 @@ static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
dep = dwc->eps[epnum];
- if (!(dep->flags & DWC3_EP_ENABLED) &&
- !(dep->flags & DWC3_EP_END_TRANSFER_PENDING))
- return;
+ if (!(dep->flags & DWC3_EP_ENABLED)) {
+ if (!(dep->flags & DWC3_EP_END_TRANSFER_PENDING))
+ return;
+
+ /* Handle only EPCMDCMPLT when EP disabled */
+ if (event->endpoint_event != DWC3_DEPEVT_EPCMDCMPLT)
+ return;
+ }
if (epnum == 0 || epnum == 1) {
dwc3_ep0_interrupt(dwc, event);
--
1.9.1
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