Sometimes, errors happen when kicking transfers from
__dwc3_gadget_start_isoc(). In those cases, we need to pass along the
error so gadget driver can make informed decisions.
Signed-off-by: Felipe Balbi <felipe.balbi@xxxxxxxxxxxxxxx>
---
drivers/usb/dwc3/gadget.c | 11 +++++------
1 file changed, 5 insertions(+), 6 deletions(-)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 69bf137aab37..f61a4250c883 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -1255,17 +1255,17 @@ static int __dwc3_gadget_get_frame(struct dwc3 *dwc)
return DWC3_DSTS_SOFFN(reg);
}
-static void __dwc3_gadget_start_isoc(struct dwc3_ep *dep)
+static int __dwc3_gadget_start_isoc(struct dwc3_ep *dep)
{
if (list_empty(&dep->pending_list)) {
dev_info(dep->dwc->dev, "%s: ran out of requests\n",
dep->name);
dep->flags |= DWC3_EP_PENDING_REQUEST;
- return;
+ return -EAGAIN;
}
dep->frame_number = DWC3_ALIGN_FRAME(dep);
- __dwc3_gadget_kick_transfer(dep);
+ return __dwc3_gadget_kick_transfer(dep);
}
static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
@@ -1306,8 +1306,7 @@ static int __dwc3_gadget_ep_queue(struct dwc3_ep *dep, struct dwc3_request *req)
if ((dep->flags & DWC3_EP_PENDING_REQUEST)) {
if (!(dep->flags & DWC3_EP_TRANSFER_STARTED)) {
- __dwc3_gadget_start_isoc(dep);
- return 0;
+ return __dwc3_gadget_start_isoc(dep);
}
}
}
@@ -2427,7 +2426,7 @@ static void dwc3_gadget_endpoint_transfer_not_ready(struct dwc3_ep *dep,
const struct dwc3_event_depevt *event)
{
dwc3_gadget_endpoint_frame_from_event(dep, event);
- __dwc3_gadget_start_isoc(dep);
+ (void) __dwc3_gadget_start_isoc(dep);
}
static void dwc3_endpoint_interrupt(struct dwc3 *dwc,
--
2.18.0
