From: Neal Liu <neal_liu@aspeedtech.com>
To: Felipe Balbi <balbi@kernel.org>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
Joel Stanley <joel@jms.id.au>, Andrew Jeffery <andrew@aj.id.au>,
Cai Huoqing <caihuoqing@baidu.com>,
Tao Ren <rentao.bupt@gmail.com>,
Julia Lawall <julia.lawall@inria.fr>,
"kernel test robot" <lkp@intel.com>,
Sasha Levin <sashal@kernel.org>, <linux-usb@vger.kernel.org>,
<linux-kernel@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-aspeed@lists.ozlabs.org>, <benh@kernel.crashing.org>
Cc: Neal Liu <neal_liu@aspeedtech.com>, <BMC-SW@aspeedtech.com>
Subject: [PATCH v3 2/4] usb: aspeed-vhub: fix remote wakeup failure in iKVM use case
Date: Wed, 8 Dec 2021 18:05:43 +0800 [thread overview]
Message-ID: <20211208100545.1441397-3-neal_liu@aspeedtech.com> (raw)
In-Reply-To: <20211208100545.1441397-1-neal_liu@aspeedtech.com>
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
next prev parent reply other threads:[~2021-12-08 10:06 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-08 10:05 [PATCH v3 0/4] Refactor Aspeed USB vhub driver Neal Liu
2021-12-08 10:05 ` [PATCH v3 1/4] usb: aspeed-vhub: add qualifier descriptor Neal Liu
2021-12-09 0:04 ` Benjamin Herrenschmidt
2021-12-08 10:05 ` Neal Liu [this message]
2021-12-09 0:05 ` [PATCH v3 2/4] usb: aspeed-vhub: fix remote wakeup failure in iKVM use case Benjamin Herrenschmidt
2021-12-09 2:37 ` Neal Liu
2021-12-14 2:35 ` Benjamin Herrenschmidt
2021-12-20 2:22 ` Neal Liu
2021-12-27 2:07 ` Neal Liu
2022-01-10 6:29 ` Neal Liu
2021-12-13 14:01 ` Greg Kroah-Hartman
2021-12-08 10:05 ` [PATCH v3 3/4] usb: aspeed-vhub: fix ep0 OUT ack received wrong length issue Neal Liu
2021-12-08 10:05 ` [PATCH v3 4/4] usb: aspeed-vhub: support test mode feature Neal Liu
2021-12-09 0:06 ` Benjamin Herrenschmidt
2021-12-08 12:21 ` [PATCH v3 0/4] Refactor Aspeed USB vhub driver Greg Kroah-Hartman
2021-12-09 2:39 ` Neal Liu
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