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Commit 5d1b67af authored by qctecmdr's avatar qctecmdr Committed by Gerrit - the friendly Code Review server
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Merge "usb: f_qdss: Avoid wait_for_completion if qdss_disable is called"

parents 4c498c77 25a232e4

drivers/usb/gadget/function/f_qdss.c

+7 −3
Original line number Diff line number Diff line
@@ -2,7 +2,7 @@ 
/*

 * f_qdss.c -- QDSS function Driver

 *

 * Copyright (c) 2012-2020, The Linux Foundation. All rights reserved.

 * Copyright (c) 2012-2021, The Linux Foundation. All rights reserved.

 */



#include <linux/init.h>
@@ -899,16 +899,20 @@ void usb_qdss_close(struct usb_qdss_ch *ch) 
	qdss_log("channel:%s\n", ch->name);

	qdss = ch->priv_usb;

	qdss->qdss_close = true;

	spin_lock(&qdss->lock);

	while (!list_empty(&qdss->queued_data_pool)) {

		qreq = list_first_entry(&qdss->queued_data_pool,

				struct qdss_req, list);

		spin_unlock(&qdss->lock);

		spin_unlock_irqrestore(&channel_lock, flags);

		qdss_log("dequeue req:%pK\n", qreq->usb_req);

		usb_ep_dequeue(qdss->port.data, qreq->usb_req);

		if (!usb_ep_dequeue(qdss->port.data, qreq->usb_req))

			wait_for_completion(&qreq->write_done);

		spin_lock_irqsave(&channel_lock, flags);

		spin_lock(&qdss->lock);

	}



	spin_unlock(&qdss->lock);

	spin_unlock_irqrestore(&channel_lock, flags);

	usb_qdss_free_req(ch);

	spin_lock_irqsave(&channel_lock, flags);