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.w...@linaro.org>
---
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
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