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2024-05-10 37f49e37ab4cb5d0bc4c60eb5c6d4dd57db767bb

 kernel/drivers/hid/usbhid/hiddev.c
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@@ -1,25 +1,12 @@
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+// SPDX-License-Identifier: GPL-2.0-or-later
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 /*
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  *  Copyright (c) 2001 Paul Stewart
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  *  Copyright (c) 2001 Vojtech Pavlik
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  *
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  *  HID char devices, giving access to raw HID device events.
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- *
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  */
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 /*
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License as published by
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- * the Free Software Foundation; either version 2 of the License, or
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- * (at your option) any later version.
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- *
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- * This program is distributed in the hope that it will be useful,
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- * but WITHOUT ANY WARRANTY; without even the implied warranty of
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- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
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- * GNU General Public License for more details.
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- *
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- * You should have received a copy of the GNU General Public License
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- * along with this program; if not, write to the Free Software
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- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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  *
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  * Should you need to contact me, the author, you can do so either by
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  * e-mail - mail your message to Paul Stewart <stewart@wetlogic.net>
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@@ -428,7 +415,7 @@
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 	poll_wait(file, &list->hiddev->wait, wait);
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 	if (list->head != list->tail)
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-		return EPOLLIN | EPOLLRDNORM;
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+		return EPOLLIN | EPOLLRDNORM | EPOLLOUT;
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 	if (!list->hiddev->exist)
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 		return EPOLLERR | EPOLLHUP;
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 	return 0;
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@@ -798,7 +785,6 @@
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 		break;
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 	case HIDIOCGUCODE:
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-		/* fall through */
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 	case HIDIOCGUSAGE:
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 	case HIDIOCSUSAGE:
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 	case HIDIOCGUSAGES:
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@@ -858,13 +844,6 @@
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 	return r;
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 }
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-#ifdef CONFIG_COMPAT
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-static long hiddev_compat_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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-{
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-	return hiddev_ioctl(file, cmd, (unsigned long)compat_ptr(arg));
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-}
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-#endif
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-
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 static const struct file_operations hiddev_fops = {
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 	.owner =	THIS_MODULE,
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 	.read =		hiddev_read,
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@@ -874,9 +853,7 @@
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 	.release =	hiddev_release,
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 	.unlocked_ioctl =	hiddev_ioctl,
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 	.fasync =	hiddev_fasync,
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-#ifdef CONFIG_COMPAT
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-	.compat_ioctl	= hiddev_compat_ioctl,
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-#endif
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+	.compat_ioctl	= compat_ptr_ioctl,
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 	.llseek		= noop_llseek,
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 };
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