Merge tag 'input-for-v6.14-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input

88e969fc · Linus Torvalds <[email protected]> · 2025-01-22 12:12:42 -08:00

Pull input updates from Dmitry Torokhov:

 - more conversions to the guard notation in the input core

 - a fix for NXP BBNSM power key driver to clean up wake IRQ after
   unbinding

 - several new vendor/device ID pairs added to xpad game controller
   driver

 - several drivers switched to using str_enable_disable and similar
   helpers instead of open-coding

 - add mapping for F23 to atkbd driver so that MS "Copilot" key shortcut
   works out of the box (if userspace is ready to handle it)

 - evbug input handler has been removed (debugging through evdev is
   strongly preferred to dumping all events into the kernel log).

* tag 'input-for-v6.14-rc0' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (22 commits)
  Input: synaptics - fix crash when enabling pass-through port
  Input: atkbd - map F23 key to support default copilot shortcut
  Input: xpad - add support for Nacon Evol-X Xbox One Controller
  Input: xpad - add unofficial Xbox 360 wireless receiver clone
  Input: xpad - add support for wooting two he (arm)
  Input: xpad - improve name of 8BitDo controller 2dc8:3106
  Input: xpad - add QH Electronics VID/PID
  Input: joystick - use str_off_on() helper in sw_connect()
  Input: Use str_enable_disable-like helpers
  Input: use guard notation in input core
  Input: poller - convert locking to guard notation
  Input: mt - make use of __free() cleanup facility
  Input: mt - convert locking to guard notation
  Input: ff-memless - make use of __free() cleanup facility
  Input: ff-memless - convert locking to guard notation
  Input: ff-core - make use of __free() cleanup facility
  Input: ff-core - convert locking to guard notation
  Input: remove evbug driver
  Input: mma8450 - add chip ID check in probe
  Input: bbnsm_pwrkey - add remove hook
  ...

Commit: 88e969fc18a25ab3ffe554a1c2e8e45c8ade6d3e
Parents: 27c02784 · 25768de5

Merge commit. Changes below are compared with the first parent: 27c02784.

Changes

22 files changed · +275 −468

File	Status	Add	Del	Content
drivers/input/Kconfig	modified	+0	−14	View file
drivers/input/Makefile	modified	+0	−1	View file
drivers/input/evbug.c	deleted	+0	−100	View before deletion
drivers/input/ff-core.c	modified	+36	−55	View file
drivers/input/ff-memless.c	modified	+6	−12	View file
drivers/input/input-mt.c	modified	+12	−22	View file
drivers/input/input-poller.c	modified	+1	−3	View file
drivers/input/input.c	modified	+131	−208	View file
drivers/input/joystick/sidewinder.c	modified	+2	−1	View file
drivers/input/joystick/xpad.c	modified	+8	−1	View file
drivers/input/keyboard/atkbd.c	modified	+1	−1	View file
drivers/input/keyboard/dlink-dir685-touchkeys.c	modified	+2	−1	View file
drivers/input/keyboard/lm8323.c	modified	+2	−1	View file
drivers/input/misc/max77693-haptic.c	modified	+2	−1	View file
drivers/input/misc/mma8450.c	modified	+15	−1	View file
drivers/input/misc/nxp-bbnsm-pwrkey.c	modified	+8	−0	View file
drivers/input/misc/regulator-haptic.c	modified	+2	−1	View file
drivers/input/mouse/elan_i2c_core.c	modified	+2	−1	View file
drivers/input/mouse/synaptics.c	modified	+42	−14	View file
drivers/input/mouse/synaptics.h	modified	+1	−0	View file
drivers/input/touchscreen/egalax_ts.c	modified	+2	−1	View file
include/linux/platform_data/keyscan-davinci.h	deleted	+0	−29	View before deletion

Only the first 600 diff lines are shown. Download the complete patch.

drivers/input/Kconfig

View file

diff --git a/drivers/input/Kconfig b/drivers/input/Kconfig
index 3bdbd34..88ecdf5 100644
--- a/drivers/input/Kconfig
+++ b/drivers/input/Kconfig
@@ -152,20 +152,6 @@ config INPUT_EVDEV
 	  To compile this driver as a module, choose M here: the
 	  module will be called evdev.
 
-config INPUT_EVBUG
-	tristate "Event debugging"
-	help
-	  Say Y here if you have a problem with the input subsystem and
-	  want all events (keypresses, mouse movements), to be output to
-	  the system log. While this is useful for debugging, it's also
-	  a security threat - your keypresses include your passwords, of
-	  course.
-
-	  If unsure, say N.
-
-	  To compile this driver as a module, choose M here: the
-	  module will be called evbug.
-
 config INPUT_KUNIT_TEST
 	tristate "KUnit tests for Input" if !KUNIT_ALL_TESTS
 	depends on INPUT && KUNIT

drivers/input/Makefile

View file

diff --git a/drivers/input/Makefile b/drivers/input/Makefile
index c787532..930b64d 100644
--- a/drivers/input/Makefile
+++ b/drivers/input/Makefile
@@ -18,7 +18,6 @@ obj-$(CONFIG_INPUT_LEDS)	+= input-leds.o
 obj-$(CONFIG_INPUT_MOUSEDEV)	+= mousedev.o
 obj-$(CONFIG_INPUT_JOYDEV)	+= joydev.o
 obj-$(CONFIG_INPUT_EVDEV)	+= evdev.o
-obj-$(CONFIG_INPUT_EVBUG)	+= evbug.o
 
 obj-$(CONFIG_INPUT_KEYBOARD)	+= keyboard/
 obj-$(CONFIG_INPUT_MOUSE)	+= mouse/

drivers/input/evbug.c

View before deletion

diff --git a/drivers/input/evbug.c b/drivers/input/evbug.c
deleted file mode 100644
index e47bdf9..0000000
--- a/drivers/input/evbug.c
+++ /dev/null
@@ -1,100 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-or-later
-/*
- *  Copyright (c) 1999-2001 Vojtech Pavlik
- */
-
-/*
- *  Input driver event debug module - dumps all events into syslog
- */
-
-#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
-
-#include <linux/slab.h>
-#include <linux/module.h>
-#include <linux/input.h>
-#include <linux/init.h>
-#include <linux/device.h>
-
-MODULE_AUTHOR("Vojtech Pavlik <[email protected]>");
-MODULE_DESCRIPTION("Input driver event debug module");
-MODULE_LICENSE("GPL");
-
-static void evbug_event(struct input_handle *handle, unsigned int type, unsigned int code, int value)
-{
-	printk(KERN_DEBUG pr_fmt("Event. Dev: %s, Type: %d, Code: %d, Value: %d\n"),
-	       dev_name(&handle->dev->dev), type, code, value);
-}
-
-static int evbug_connect(struct input_handler *handler, struct input_dev *dev,
-			 const struct input_device_id *id)
-{
-	struct input_handle *handle;
-	int error;
-
-	handle = kzalloc(sizeof(struct input_handle), GFP_KERNEL);
-	if (!handle)
-		return -ENOMEM;
-
-	handle->dev = dev;
-	handle->handler = handler;
-	handle->name = "evbug";
-
-	error = input_register_handle(handle);
-	if (error)
-		goto err_free_handle;
-
-	error = input_open_device(handle);
-	if (error)
-		goto err_unregister_handle;
-
-	printk(KERN_DEBUG pr_fmt("Connected device: %s (%s at %s)\n"),
-	       dev_name(&dev->dev),
-	       dev->name ?: "unknown",
-	       dev->phys ?: "unknown");
-
-	return 0;
-
- err_unregister_handle:
-	input_unregister_handle(handle);
- err_free_handle:
-	kfree(handle);
-	return error;
-}
-
-static void evbug_disconnect(struct input_handle *handle)
-{
-	printk(KERN_DEBUG pr_fmt("Disconnected device: %s\n"),
-	       dev_name(&handle->dev->dev));
-
-	input_close_device(handle);
-	input_unregister_handle(handle);
-	kfree(handle);
-}
-
-static const struct input_device_id evbug_ids[] = {
-	{ .driver_info = 1 },	/* Matches all devices */
-	{ },			/* Terminating zero entry */
-};
-
-MODULE_DEVICE_TABLE(input, evbug_ids);
-
-static struct input_handler evbug_handler = {
-	.event =	evbug_event,
-	.connect =	evbug_connect,
-	.disconnect =	evbug_disconnect,
-	.name =		"evbug",
-	.id_table =	evbug_ids,
-};
-
-static int __init evbug_init(void)
-{
-	return input_register_handler(&evbug_handler);
-}
-
-static void __exit evbug_exit(void)
-{
-	input_unregister_handler(&evbug_handler);
-}
-
-module_init(evbug_init);
-module_exit(evbug_exit);

drivers/input/ff-core.c

View file

diff --git a/drivers/input/ff-core.c b/drivers/input/ff-core.c
index 609a5f0..b527308 100644
--- a/drivers/input/ff-core.c
+++ b/drivers/input/ff-core.c
@@ -93,7 +93,7 @@ int input_ff_upload(struct input_dev *dev, struct ff_effect *effect,
 {
 	struct ff_device *ff = dev->ff;
 	struct ff_effect *old;
-	int ret = 0;
+	int error;
 	int id;
 
 	if (!test_bit(EV_FF, dev->evbit))
@@ -114,22 +114,20 @@ int input_ff_upload(struct input_dev *dev, struct ff_effect *effect,
 	}
 
 	if (!test_bit(effect->type, ff->ffbit)) {
-		ret = compat_effect(ff, effect);
-		if (ret)
-			return ret;
+		error = compat_effect(ff, effect);
+		if (error)
+			return error;
 	}
 
-	mutex_lock(&ff->mutex);
+	guard(mutex)(&ff->mutex);
 
 	if (effect->id == -1) {
 		for (id = 0; id < ff->max_effects; id++)
 			if (!ff->effect_owners[id])
 				break;
 
-		if (id >= ff->max_effects) {
-			ret = -ENOSPC;
-			goto out;
-		}
+		if (id >= ff->max_effects)
+			return -ENOSPC;
 
 		effect->id = id;
 		old = NULL;
@@ -137,30 +135,26 @@ int input_ff_upload(struct input_dev *dev, struct ff_effect *effect,
 	} else {
 		id = effect->id;
 
-		ret = check_effect_access(ff, id, file);
-		if (ret)
-			goto out;
+		error = check_effect_access(ff, id, file);
+		if (error)
+			return error;
 
 		old = &ff->effects[id];
 
-		if (!check_effects_compatible(effect, old)) {
-			ret = -EINVAL;
-			goto out;
-		}
+		if (!check_effects_compatible(effect, old))
+			return -EINVAL;
 	}
 
-	ret = ff->upload(dev, effect, old);
-	if (ret)
-		goto out;
+	error = ff->upload(dev, effect, old);
+	if (error)
+		return error;
 
-	spin_lock_irq(&dev->event_lock);
-	ff->effects[id] = *effect;
-	ff->effect_owners[id] = file;
-	spin_unlock_irq(&dev->event_lock);
+	scoped_guard(spinlock_irq, &dev->event_lock) {
+		ff->effects[id] = *effect;
+		ff->effect_owners[id] = file;
+	}
 
- out:
-	mutex_unlock(&ff->mutex);
-	return ret;
+	return 0;
 }
 EXPORT_SYMBOL_GPL(input_ff_upload);
 
@@ -178,17 +172,16 @@ static int erase_effect(struct input_dev *dev, int effect_id,
 	if (error)
 		return error;
 
-	spin_lock_irq(&dev->event_lock);
-	ff->playback(dev, effect_id, 0);
-	ff->effect_owners[effect_id] = NULL;
-	spin_unlock_irq(&dev->event_lock);
+	scoped_guard(spinlock_irq, &dev->event_lock) {
+		ff->playback(dev, effect_id, 0);
+		ff->effect_owners[effect_id] = NULL;
+	}
 
 	if (ff->erase) {
 		error = ff->erase(dev, effect_id);
 		if (error) {
-			spin_lock_irq(&dev->event_lock);
-			ff->effect_owners[effect_id] = file;
-			spin_unlock_irq(&dev->event_lock);
+			scoped_guard(spinlock_irq, &dev->event_lock)
+				ff->effect_owners[effect_id] = file;
 
 			return error;
 		}
@@ -210,16 +203,12 @@ static int erase_effect(struct input_dev *dev, int effect_id,
 int input_ff_erase(struct input_dev *dev, int effect_id, struct file *file)
 {
 	struct ff_device *ff = dev->ff;
-	int ret;
 
 	if (!test_bit(EV_FF, dev->evbit))
 		return -ENOSYS;
 
-	mutex_lock(&ff->mutex);
-	ret = erase_effect(dev, effect_id, file);
-	mutex_unlock(&ff->mutex);
-
-	return ret;
+	guard(mutex)(&ff->mutex);
+	return erase_effect(dev, effect_id, file);
 }
 EXPORT_SYMBOL_GPL(input_ff_erase);
 
@@ -239,13 +228,11 @@ int input_ff_flush(struct input_dev *dev, struct file *file)
 
 	dev_dbg(&dev->dev, "flushing now\n");
 
-	mutex_lock(&ff->mutex);
+	guard(mutex)(&ff->mutex);
 
 	for (i = 0; i < ff->max_effects; i++)
 		erase_effect(dev, i, file);
 
-	mutex_unlock(&ff->mutex);
-
 	return 0;
 }
 EXPORT_SYMBOL_GPL(input_ff_flush);
@@ -303,8 +290,6 @@ EXPORT_SYMBOL_GPL(input_ff_event);
  */
 int input_ff_create(struct input_dev *dev, unsigned int max_effects)
 {
-	struct ff_device *ff;
-	size_t ff_dev_size;
 	int i;
 
 	if (!max_effects) {
@@ -317,25 +302,19 @@ int input_ff_create(struct input_dev *dev, unsigned int max_effects)
 		return -EINVAL;
 	}
 
-	ff_dev_size = struct_size(ff, effect_owners, max_effects);
-	if (ff_dev_size == SIZE_MAX) /* overflow */
-		return -EINVAL;
-
-	ff = kzalloc(ff_dev_size, GFP_KERNEL);
+	struct ff_device *ff __free(kfree) =
+		kzalloc(struct_size(ff, effect_owners, max_effects),
+			GFP_KERNEL);
 	if (!ff)
 		return -ENOMEM;
 
-	ff->effects = kcalloc(max_effects, sizeof(struct ff_effect),
-			      GFP_KERNEL);
-	if (!ff->effects) {
-		kfree(ff);
+	ff->effects = kcalloc(max_effects, sizeof(*ff->effects), GFP_KERNEL);
+	if (!ff->effects)
 		return -ENOMEM;
-	}
 
 	ff->max_effects = max_effects;
 	mutex_init(&ff->mutex);
 
-	dev->ff = ff;
 	dev->flush = input_ff_flush;
 	dev->event = input_ff_event;
 	__set_bit(EV_FF, dev->evbit);
@@ -348,6 +327,8 @@ int input_ff_create(struct input_dev *dev, unsigned int max_effects)
 	if (test_bit(FF_PERIODIC, ff->ffbit))
 		__set_bit(FF_RUMBLE, dev->ffbit);
 
+	dev->ff = no_free_ptr(ff);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(input_ff_create);

drivers/input/ff-memless.c

View file

diff --git a/drivers/input/ff-memless.c b/drivers/input/ff-memless.c
index c321cda..e9120ba 100644
--- a/drivers/input/ff-memless.c
+++ b/drivers/input/ff-memless.c
@@ -401,13 +401,11 @@ static void ml_effect_timer(struct timer_list *t)
 {
 	struct ml_device *ml = from_timer(ml, t, timer);
 	struct input_dev *dev = ml->dev;
-	unsigned long flags;
 
 	pr_debug("timer: updating effects\n");
 
-	spin_lock_irqsave(&dev->event_lock, flags);
+	guard(spinlock_irqsave)(&dev->event_lock);
 	ml_play_effects(ml);
-	spin_unlock_irqrestore(&dev->event_lock, flags);
 }
 
 /*
@@ -465,7 +463,7 @@ static int ml_ff_upload(struct input_dev *dev,
 	struct ml_device *ml = dev->ff->private;
 	struct ml_effect_state *state = &ml->states[effect->id];
 
-	spin_lock_irq(&dev->event_lock);
+	guard(spinlock_irq)(&dev->event_lock);
 
 	if (test_bit(FF_EFFECT_STARTED, &state->flags)) {
 		__clear_bit(FF_EFFECT_PLAYING, &state->flags);
@@ -477,8 +475,6 @@ static int ml_ff_upload(struct input_dev *dev,
 		ml_schedule_timer(ml);
 	}
 
-	spin_unlock_irq(&dev->event_lock);
-
 	return 0;
 }
 
@@ -507,12 +503,11 @@ static void ml_ff_destroy(struct ff_device *ff)
 int input_ff_create_memless(struct input_dev *dev, void *data,
 		int (*play_effect)(struct input_dev *, void *, struct ff_effect *))
 {
-	struct ml_device *ml;
 	struct ff_device *ff;
 	int error;
 	int i;
 
-	ml = kzalloc(sizeof(struct ml_device), GFP_KERNEL);
+	struct ml_device *ml __free(kfree) = kzalloc(sizeof(*ml), GFP_KERNEL);
 	if (!ml)
 		return -ENOMEM;
 
@@ -525,13 +520,10 @@ int input_ff_create_memless(struct input_dev *dev, void *data,
 	set_bit(FF_GAIN, dev->ffbit);
 
 	error = input_ff_create(dev, FF_MEMLESS_EFFECTS);
-	if (error) {
-		kfree(ml);
+	if (error)
 		return error;
-	}
 
 	ff = dev->ff;
-	ff->private = ml;
 	ff->upload = ml_ff_upload;
 	ff->playback = ml_ff_playback;
 	ff->set_gain = ml_ff_set_gain;
@@ -548,6 +540,8 @@ int input_ff_create_memless(struct input_dev *dev, void *data,
 	for (i = 0; i < FF_MEMLESS_EFFECTS; i++)
 		ml->states[i].effect = &ff->effects[i];
 
+	ff->private = no_free_ptr(ml);
+
 	return 0;
 }
 EXPORT_SYMBOL_GPL(input_ff_create_memless);

drivers/input/input-mt.c

View file

diff --git a/drivers/input/input-mt.c b/drivers/input/input-mt.c
index 6b04a67..337006d 100644
--- a/drivers/input/input-mt.c
+++ b/drivers/input/input-mt.c
@@ -39,20 +39,20 @@ static void copy_abs(struct input_dev *dev, unsigned int dst, unsigned int src)
 int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots,
 			unsigned int flags)
 {
-	struct input_mt *mt = dev->mt;
-	int i;
-
 	if (!num_slots)
 		return 0;
-	if (mt)
-		return mt->num_slots != num_slots ? -EINVAL : 0;
+
+	if (dev->mt)
+		return dev->mt->num_slots != num_slots ? -EINVAL : 0;
+
 	/* Arbitrary limit for avoiding too large memory allocation. */
 	if (num_slots > 1024)
 		return -EINVAL;
 
-	mt = kzalloc(struct_size(mt, slots, num_slots), GFP_KERNEL);
+	struct input_mt *mt __free(kfree) =
+			kzalloc(struct_size(mt, slots, num_slots), GFP_KERNEL);
 	if (!mt)
-		goto err_mem;
+		return -ENOMEM;
 
 	mt->num_slots = num_slots;
 	mt->flags = flags;
@@ -86,21 +86,18 @@ int input_mt_init_slots(struct input_dev *dev, unsigned int num_slots,
 		unsigned int n2 = num_slots * num_slots;
 		mt->red = kcalloc(n2, sizeof(*mt->red), GFP_KERNEL);
 		if (!mt->red)
-			goto err_mem;
+			return -ENOMEM;
 	}
 
 	/* Mark slots as 'inactive' */
-	for (i = 0; i < num_slots; i++)
+	for (unsigned int i = 0; i < num_slots; i++)
 		input_mt_set_value(&mt->slots[i], ABS_MT_TRACKING_ID, -1);
 
 	/* Mark slots as 'unused' */
 	mt->frame = 1;
 
-	dev->mt = mt;
+	dev->mt = no_free_ptr(mt);
 	return 0;
-err_mem:
-	kfree(mt);
-	return -ENOMEM;
 }
 EXPORT_SYMBOL(input_mt_init_slots);
 
@@ -285,14 +282,10 @@ void input_mt_drop_unused(struct input_dev *dev)
 	struct input_mt *mt = dev->mt;
 
 	if (mt) {
-		unsigned long flags;
-
-		spin_lock_irqsave(&dev->event_lock, flags);
+		guard(spinlock_irqsave)(&dev->event_lock);
 
 		__input_mt_drop_unused(dev, mt);
 		mt->frame++;
-
-		spin_unlock_irqrestore(&dev->event_lock, flags);
 	}
 }
 EXPORT_SYMBOL(input_mt_drop_unused);
@@ -339,11 +332,8 @@ void input_mt_sync_frame(struct input_dev *dev)
 		return;
 
 	if (mt->flags & INPUT_MT_DROP_UNUSED) {
-		unsigned long flags;
-
-		spin_lock_irqsave(&dev->event_lock, flags);
+		guard(spinlock_irqsave)(&dev->event_lock);
 		__input_mt_drop_unused(dev, mt);
-		spin_unlock_irqrestore(&dev->event_lock, flags);
 	}
 
 	if ((mt->flags & INPUT_MT_POINTER) && !(mt->flags & INPUT_MT_SEMI_MT))

drivers/input/input-poller.c

View file

diff --git a/drivers/input/input-poller.c b/drivers/input/input-poller.c
index 688e3cb..9c57713 100644
--- a/drivers/input/input-poller.c
+++ b/drivers/input/input-poller.c
@@ -162,7 +162,7 @@ static ssize_t input_dev_set_poll_interval(struct device *dev,
 	if (interval > poller->poll_interval_max)
 		return -EINVAL;
 
-	mutex_lock(&input->mutex);
+	guard(mutex)(&input->mutex);
 
 	poller->poll_interval = interval;
 
@@ -172,8 +172,6 @@ static ssize_t input_dev_set_poll_interval(struct device *dev,
 			input_dev_poller_queue_work(poller);
 	}
 
-	mutex_unlock(&input->mutex);
-
 	return count;
 }
 

drivers/input/input.c

View file

diff --git a/drivers/input/input.c b/drivers/input/input.c
index 7f0477e..c9e3ac6 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -115,23 +115,23 @@ static void input_pass_values(struct input_dev *dev,
 
 	lockdep_assert_held(&dev->event_lock);
 
-	rcu_read_lock();
+	scoped_guard(rcu) {
+		handle = rcu_dereference(dev->grab);
+		if (handle) {
+			count = handle->handle_events(handle, vals, count);
+			break;
+		}
 
-	handle = rcu_dereference(dev->grab);
-	if (handle) {
-		count = handle->handle_events(handle, vals, count);
-	} else {
-		list_for_each_entry_rcu(handle, &dev->h_list, d_node)
+		list_for_each_entry_rcu(handle, &dev->h_list, d_node) {
 			if (handle->open) {
 				count = handle->handle_events(handle, vals,
 							      count);
 				if (!count)
 					break;
 			}
+		}
 	}
 
-	rcu_read_unlock();
-
 	/* trigger auto repeat for key events */
 	if (test_bit(EV_REP, dev->evbit) && test_bit(EV_KEY, dev->evbit)) {
 		for (v = vals; v != vals + count; v++) {
@@ -390,13 +390,9 @@ void input_handle_event(struct input_dev *dev,
 void input_event(struct input_dev *dev,
 		 unsigned int type, unsigned int code, int value)
 {
-	unsigned long flags;
-
 	if (is_event_supported(type, dev->evbit, EV_MAX)) {
-
-		spin_lock_irqsave(&dev->event_lock, flags);
+		guard(spinlock_irqsave)(&dev->event_lock);
 		input_handle_event(dev, type, code, value);
-		spin_unlock_irqrestore(&dev->event_lock, flags);
 	}
 }
 EXPORT_SYMBOL(input_event);
@@ -417,18 +413,15 @@ void input_inject_event(struct input_handle *handle,
 {
 	struct input_dev *dev = handle->dev;
 	struct input_handle *grab;
-	unsigned long flags;
 
 	if (is_event_supported(type, dev->evbit, EV_MAX)) {
-		spin_lock_irqsave(&dev->event_lock, flags);
+		guard(spinlock_irqsave)(&dev->event_lock);
+		guard(rcu)();
 
-		rcu_read_lock();
 		grab = rcu_dereference(dev->grab);
 		if (!grab || grab == handle)
 			input_handle_event(dev, type, code, value);
-		rcu_read_unlock();
 
-		spin_unlock_irqrestore(&dev->event_lock, flags);
 	}
 }
 EXPORT_SYMBOL(input_inject_event);
@@ -526,22 +519,15 @@ EXPORT_SYMBOL(input_copy_abs);
 int input_grab_device(struct input_handle *handle)
 {
 	struct input_dev *dev = handle->dev;
-	int retval;
 
-	retval = mutex_lock_interruptible(&dev->mutex);
-	if (retval)
-		return retval;