When system has stpped the gadget, we should avoid queuing any requests which will cause tranfer failed. Thus adding some disconnect checking to avoid this situation. Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxx> --- Changes since v2: - Move disconnect checking into dwc3_send_gadget_ep_cmd(). - Rename completion name and issue complete() at one place. - Move completion initialization into dwc3_gadget_init(). Changes since v1: - Split into 2 separate ptaches. - Choose complete mechanism instead of polling. --- drivers/usb/dwc3/gadget.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 1783406..ca2ae5b 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -241,6 +241,9 @@ int dwc3_send_gadget_ep_cmd(struct dwc3_ep *dep, unsigned cmd, int susphy = false; int ret = -EINVAL; + if (!dwc->pullups_connected) + return -ESHUTDOWN; + /* * Synopsys Databook 2.60a states, on section 6.3.2.5.[1-8], that if * we're issuing an endpoint command, we must check if -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
