[PATCH v3 2/4] usb: aspeed-vhub: fix remote wakeup failure in iKVM use case
From: Neal Liu <neal_liu@aspeedtech.com>
Date: 2021-12-08 10:06:03
Also in:
linux-arm-kernel, linux-usb, lkml
Subsystem:
the rest, usb subsystem · Maintainers:
Linus Torvalds, Greg Kroah-Hartman
Signaling remote wakeup if an emulated USB device has any activity if the device is allowed by host. Signed-off-by: Neal Liu <neal_liu@aspeedtech.com> --- drivers/usb/gadget/udc/aspeed-vhub/epn.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/drivers/usb/gadget/udc/aspeed-vhub/epn.c b/drivers/usb/gadget/udc/aspeed-vhub/epn.c
index 917892ca8753..ccc239b5cc17 100644
--- a/drivers/usb/gadget/udc/aspeed-vhub/epn.c
+++ b/drivers/usb/gadget/udc/aspeed-vhub/epn.c@@ -381,6 +381,11 @@ static int ast_vhub_epn_queue(struct usb_ep* u_ep, struct usb_request *u_req, } else u_req->dma = 0; + if (ep->dev->wakeup_en) { + EPVDBG(ep, "Wakeup host first\n"); + ast_vhub_hub_wake_all(vhub); + } + EPVDBG(ep, "enqueue req @%p\n", req); EPVDBG(ep, " l=%d dma=0x%x zero=%d noshort=%d noirq=%d is_in=%d\n", u_req->length, (u32)u_req->dma, u_req->zero,
--
2.25.1