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2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/media/v4l2-core/v4l2-event.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * v4l2-event.c
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  *
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@@ -6,15 +7,6 @@
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  * Copyright (C) 2009--2010 Nokia Corporation.
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  *
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  * Contact: Sakari Ailus <sakari.ailus@iki.fi>
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- *
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- * This program is free software; you can redistribute it and/or
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- * modify it under the terms of the GNU General Public License
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- * version 2 as published by the Free Software Foundation.
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- *
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- * This program is distributed in the hope that it will be useful, but
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- * WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
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- * General Public License for more details.
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  */
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 #include <media/v4l2-dev.h>
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@@ -35,6 +27,7 @@
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 static int __v4l2_event_dequeue(struct v4l2_fh *fh, struct v4l2_event *event)
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 {
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 	struct v4l2_kevent *kev;
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+	struct timespec64 ts;
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 	unsigned long flags;
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 	spin_lock_irqsave(&fh->vdev->fh_lock, flags);
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@@ -52,6 +45,9 @@
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 	kev->event.pending = fh->navailable;
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 	*event = kev->event;
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+	ts = ns_to_timespec64(kev->ts);
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+	event->timestamp.tv_sec = ts.tv_sec;
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+	event->timestamp.tv_nsec = ts.tv_nsec;
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 	kev->sev->first = sev_pos(kev->sev, 1);
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 	kev->sev->in_use--;
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@@ -103,8 +99,8 @@
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 	return NULL;
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 }
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-static void __v4l2_event_queue_fh(struct v4l2_fh *fh, const struct v4l2_event *ev,
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-		const struct timespec *ts)
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+static void __v4l2_event_queue_fh(struct v4l2_fh *fh,
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+				  const struct v4l2_event *ev, u64 ts)
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 {
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 	struct v4l2_subscribed_event *sev;
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 	struct v4l2_kevent *kev;
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@@ -144,7 +140,7 @@
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 	if (copy_payload)
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 		kev->event.u = ev->u;
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 	kev->event.id = ev->id;
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-	kev->event.timestamp = *ts;
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+	kev->ts = ts;
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 	kev->event.sequence = fh->sequence;
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 	sev->in_use++;
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 	list_add_tail(&kev->list, &fh->available);
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@@ -158,17 +154,17 @@
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 {
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 	struct v4l2_fh *fh;
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 	unsigned long flags;
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-	struct timespec timestamp;
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+	u64 ts;
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 	if (vdev == NULL)
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 		return;
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-	ktime_get_ts(&timestamp);
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+	ts = ktime_get_ns();
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 	spin_lock_irqsave(&vdev->fh_lock, flags);
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 	list_for_each_entry(fh, &vdev->fh_list, list)
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-		__v4l2_event_queue_fh(fh, ev, &timestamp);
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+		__v4l2_event_queue_fh(fh, ev, ts);
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 	spin_unlock_irqrestore(&vdev->fh_lock, flags);
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 }
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@@ -177,12 +173,10 @@
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 void v4l2_event_queue_fh(struct v4l2_fh *fh, const struct v4l2_event *ev)
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 {
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 	unsigned long flags;
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-	struct timespec timestamp;
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-
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-	ktime_get_ts(&timestamp);
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+	u64 ts = ktime_get_ns();
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 	spin_lock_irqsave(&fh->vdev->fh_lock, flags);
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-	__v4l2_event_queue_fh(fh, ev, &timestamp);
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+	__v4l2_event_queue_fh(fh, ev, ts);
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 	spin_unlock_irqrestore(&fh->vdev->fh_lock, flags);
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 }
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 EXPORT_SYMBOL_GPL(v4l2_event_queue_fh);