diff options
| author | Roy Luo <royluo@google.com> | 2023-05-04 00:01:29 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-05-13 18:57:30 +0900 |
| commit | 2f28c3c9c34742d501b623acf8ebfe3a7faed8a3 (patch) | |
| tree | 8253c13411dc11da15f54a54b892cd4c666034bb /drivers/usb/dwc3/ep0.c | |
| parent | 02be19e914b8ec5b4e355508daf640dde761d300 (diff) | |
usb: dwc3: Add error logs for unknown endpoint events
In cases where the controller somehow fails to write to event buffer
memory (e.g. due to incorrect MMU config), the driver would receive
all-zero dwc3 events. However, the abnormal event is silently dropped
as a regular ep0out event.
Add error logs when an unknown endpoint event is received to highlight
the anomaly.
Signed-off-by: Roy Luo <royluo@google.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/20230504000129.728316-1-royluo@google.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc3/ep0.c')
| -rw-r--r-- | drivers/usb/dwc3/ep0.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/dwc3/ep0.c b/drivers/usb/dwc3/ep0.c index 953b752a5052..b94243237293 100644 --- a/drivers/usb/dwc3/ep0.c +++ b/drivers/usb/dwc3/ep0.c @@ -1207,5 +1207,8 @@ void dwc3_ep0_interrupt(struct dwc3 *dwc, dep->flags &= ~DWC3_EP_TRANSFER_STARTED; } break; + default: + dev_err(dwc->dev, "unknown endpoint event %d\n", event->endpoint_event); + break; } } |