diff mbox series

[3/5] driver core: make struct device_type.uevent() take a const *

Message ID 20221123122523.1332370-3-gregkh@linuxfoundation.org
State New
Headers show
Series None | expand

Commit Message

Greg Kroah-Hartman Nov. 23, 2022, 12:25 p.m. UTC 
The uevent() callback in struct device_type should not be modifying the
device that is passed into it, so mark it as a const * and propagate the
function signature changes out into all relevant subsystems that use
this callback.

Cc: Jens Axboe <axboe@kernel.dk>
Cc: "Rafael J. Wysocki" <rafael@kernel.org>
Cc: Len Brown <lenb@kernel.org>
Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
Cc: Wolfram Sang <wsa@kernel.org>
Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Cc: Sean Young <sean@mess.org>
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
Cc: Rob Herring <robh+dt@kernel.org>
Cc: Frank Rowand <frowand.list@gmail.com>
Cc: Maximilian Luz <luzmaximilian@gmail.com>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Mark Gross <markgross@kernel.org>
Cc: Vinod Koul <vkoul@kernel.org>
Cc: Bard Liao <yung-chuan.liao@linux.intel.com>
Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Cc: Sanyog Kale <sanyog.r.kale@intel.com>
Cc: Andreas Noever <andreas.noever@gmail.com>
Cc: Michael Jamet <michael.jamet@intel.com>
Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
Cc: Yehezkel Bernat <YehezkelShB@gmail.com>
Cc: Jiri Slaby <jirislaby@kernel.org>
Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: Chaitanya Kulkarni <kch@nvidia.com>
Cc: Ming Lei <ming.lei@redhat.com>
Cc: Jilin Yuan <yuanjilin@cdjrlc.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
Cc: Jason Gunthorpe <jgg@ziepe.ca>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ira Weiny <ira.weiny@intel.com>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Won Chung <wonchung@google.com>
Cc: alsa-devel@alsa-project.org
Cc: devicetree@vger.kernel.org
Cc: linux-acpi@vger.kernel.org
Cc: linux-block@vger.kernel.org
Cc: linux-i2c@vger.kernel.org
Cc: linux-i3c@lists.infradead.org
Cc: linux-input@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Cc: linux-media@vger.kernel.org
Cc: linux-serial@vger.kernel.org
Cc: linux-usb@vger.kernel.org
Cc: linux1394-devel@lists.sourceforge.net
Cc: platform-driver-x86@vger.kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
 block/partitions/core.c                   |  4 ++--
 drivers/acpi/device_sysfs.c               |  8 ++++----
 drivers/acpi/internal.h                   |  2 +-
 drivers/firewire/core-device.c            |  8 ++++----
 drivers/i2c/i2c-core-base.c               |  4 ++--
 drivers/i3c/device.c                      |  4 ++--
 drivers/i3c/master.c                      |  4 ++--
 drivers/input/input.c                     | 16 ++++++++--------
 drivers/media/rc/rc-main.c                |  2 +-
 drivers/of/device.c                       |  4 ++--
 drivers/platform/surface/aggregator/bus.c |  4 ++--
 drivers/soundwire/bus_type.c              |  4 ++--
 drivers/thunderbolt/switch.c              |  4 ++--
 drivers/thunderbolt/tb.h                  |  2 +-
 drivers/thunderbolt/xdomain.c             |  6 +++---
 drivers/tty/serdev/core.c                 |  2 +-
 drivers/usb/core/message.c                |  8 ++++----
 drivers/usb/core/usb.c                    |  4 ++--
 drivers/usb/phy/phy.c                     |  6 +++---
 drivers/usb/roles/class.c                 |  3 +--
 drivers/usb/typec/class.c                 |  2 +-
 include/linux/acpi.h                      |  4 ++--
 include/linux/device.h                    |  2 +-
 include/linux/firewire.h                  |  6 +++---
 include/linux/i3c/device.h                |  4 ++--
 include/linux/of_device.h                 |  4 ++--
 include/linux/soundwire/sdw_type.h        |  2 +-
 include/linux/surface_aggregator/device.h |  2 +-
 28 files changed, 62 insertions(+), 63 deletions(-)

Comments

Andy Shevchenko Nov. 23, 2022, 1:34 p.m. UTC | #1 
On Wed, Nov 23, 2022 at 02:14:31PM +0100, Maximilian Luz wrote:
> On 11/23/22 13:25, Greg Kroah-Hartman wrote:
> > The uevent() callback in struct device_type should not be modifying the
> > device that is passed into it, so mark it as a const * and propagate the
> > function signature changes out into all relevant subsystems that use
> > this callback.

[...]

> > -static inline struct ssam_device *to_ssam_device(struct device *d)
> > +static inline struct ssam_device *to_ssam_device(const struct device *d)
> >   {
> >   	return container_of(d, struct ssam_device, dev);
> >   }
> 
> I am slightly conflicted about this change as that now more or less
> implicitly drops the const. So I'm wondering if it wouldn't be better to
> either create a function specifically for const pointers or to just
> open-code it in the instance above.
> 
> I guess we could also convert this to a macro. Then at least there
> wouldn't be an explicit and potentially misleading const-conversion
> indicated in the function signature.

This is an intermediate step as far as I know since moving container_of to
recognize const is a bit noisy right now. I guess you can find a discussion
on the topic between Greg and Sakari.
Jason Gunthorpe Nov. 23, 2022, 5:29 p.m. UTC | #2 
On Wed, Nov 23, 2022 at 06:01:47PM +0100, Greg Kroah-Hartman wrote:
> On Wed, Nov 23, 2022 at 12:25:32PM -0400, Jason Gunthorpe wrote:
> > On Wed, Nov 23, 2022 at 04:37:59PM +0100, Greg Kroah-Hartman wrote:
> > > static inline struct device *__kobj_to_dev(struct kobject *kobj)
> > > {
> > >         return container_of(kobj, struct device, kobj);
> > > }
> > > 
> > > static inline const struct device *__kobj_to_dev_const(const struct kobject *kobj)
> > > {
> > >         return container_of(kobj, const struct device, kobj);
> > > }
> > > 
> > > /*
> > >  * container_of() will happily take a const * and spit back a non-const * as it
> > >  * is just doing pointer math.  But we want to be a bit more careful in the
> > >  * driver code, so manually force any const * of a kobject to also be a const *
> > >  * to a device.
> > >  */
> > > #define kobj_to_dev(kobj)                                       \
> > >         _Generic((kobj),                                        \
> > >                  const struct kobject *: __kobj_to_dev_const,   \
> > >                  struct kobject *: __kobj_to_dev)(kobj)
> > > 
> > > 
> > > Want me to do the same thing here as well?
> > 
> > It would be nice to have a shared macro code gen all of the above
> > instead of copy and pasting it. Then maybe other cases beyond struct
> > device could adopt const too..
> 
> I think I tried to create such a beast, but failed, so ended up
> open-coding it in a few places in the USB headers already.  I can try it
> again, but the redirection gets tricky (defines creating defines...)

This seems OK:

#define generic_container_of(in_type, in, out_type, out_member) \
	_Generic(in,                                        \
                  const in_type *: ((const out_type *)container_of(in, out_type, out_member)),   \
                  in_type *: ((out_type *)container_of(in, out_type, out_member)) \
		  )

#define kobj_to_dev(__kobj) \
	generic_container_of(struct kobject, __kobj, struct device, kobj)

Jason
Greg Kroah-Hartman Dec. 1, 2022, 6:43 p.m. UTC | #3 
On Wed, Nov 23, 2022 at 06:00:23PM +0000, Matthew Wilcox wrote:
> On Wed, Nov 23, 2022 at 01:55:42PM -0400, Jason Gunthorpe wrote:
> > On Wed, Nov 23, 2022 at 05:49:36PM +0000, Matthew Wilcox wrote:
> > > On Wed, Nov 23, 2022 at 01:29:56PM -0400, Jason Gunthorpe wrote:
> > > > #define generic_container_of(in_type, in, out_type, out_member) \
> > > > 	_Generic(in,                                        \
> > > >                   const in_type *: ((const out_type *)container_of(in, out_type, out_member)),   \
> > > >                   in_type *: ((out_type *)container_of(in, out_type, out_member)) \
> > > > 		  )
> > > 
> > > There's a neat trick I found in seqlock.h:
> > > 
> > > #define generic_container_of(in_t, in, out_t, m)			\
> > > 	_Generic(*(in),							\
> > > 		const in_t: ((const out_t *)container_of(in, out_t, m)), \
> > > 		in_t: ((out_t *)container_of(in, out_type, m))	\
> > > 	)
> > >
> > > and now it fits in 80 columns ;-)
> > 
> > Aside from less letters, is their another benifit to using *(in) ?
> 
> I don't think so.  It just looks nicer to me than putting the star in
> each case.  If I'd thought of it, I would have done it to page_folio(),
> but I won't change it now.

Ah, but your trick will not work, that blows up and will not build.  The
original one from Jason here does work.  _Generic is tricky...

thanks,

greg k-h
Greg Kroah-Hartman Jan. 11, 2023, 9:51 a.m. UTC | #4 
On Wed, Nov 23, 2022 at 01:38:05PM +0100, Rafael J. Wysocki wrote:
> On Wed, Nov 23, 2022 at 1:25 PM Greg Kroah-Hartman
> <gregkh@linuxfoundation.org> wrote:
> >
> > The uevent() callback in struct device_type should not be modifying the
> > device that is passed into it, so mark it as a const * and propagate the
> > function signature changes out into all relevant subsystems that use
> > this callback.
> >
> > Cc: Jens Axboe <axboe@kernel.dk>
> > Cc: "Rafael J. Wysocki" <rafael@kernel.org>
> > Cc: Len Brown <lenb@kernel.org>
> > Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
> > Cc: Wolfram Sang <wsa@kernel.org>
> > Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
> > Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> > Cc: Sean Young <sean@mess.org>
> > Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
> > Cc: Rob Herring <robh+dt@kernel.org>
> > Cc: Frank Rowand <frowand.list@gmail.com>
> > Cc: Maximilian Luz <luzmaximilian@gmail.com>
> > Cc: Hans de Goede <hdegoede@redhat.com>
> > Cc: Mark Gross <markgross@kernel.org>
> > Cc: Vinod Koul <vkoul@kernel.org>
> > Cc: Bard Liao <yung-chuan.liao@linux.intel.com>
> > Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
> > Cc: Sanyog Kale <sanyog.r.kale@intel.com>
> > Cc: Andreas Noever <andreas.noever@gmail.com>
> > Cc: Michael Jamet <michael.jamet@intel.com>
> > Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
> > Cc: Yehezkel Bernat <YehezkelShB@gmail.com>
> > Cc: Jiri Slaby <jirislaby@kernel.org>
> > Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com>
> > Cc: "Matthew Wilcox (Oracle)" <willy@infradead.org>
> > Cc: "Martin K. Petersen" <martin.petersen@oracle.com>
> > Cc: Chaitanya Kulkarni <kch@nvidia.com>
> > Cc: Ming Lei <ming.lei@redhat.com>
> > Cc: Jilin Yuan <yuanjilin@cdjrlc.com>
> > Cc: Alan Stern <stern@rowland.harvard.edu>
> > Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> > Cc: Sakari Ailus <sakari.ailus@linux.intel.com>
> > Cc: Jason Gunthorpe <jgg@ziepe.ca>
> > Cc: Thomas Gleixner <tglx@linutronix.de>
> > Cc: Ira Weiny <ira.weiny@intel.com>
> > Cc: Dan Williams <dan.j.williams@intel.com>
> > Cc: Won Chung <wonchung@google.com>
> > Cc: alsa-devel@alsa-project.org
> > Cc: devicetree@vger.kernel.org
> > Cc: linux-acpi@vger.kernel.org
> > Cc: linux-block@vger.kernel.org
> > Cc: linux-i2c@vger.kernel.org
> > Cc: linux-i3c@lists.infradead.org
> > Cc: linux-input@vger.kernel.org
> > Cc: linux-kernel@vger.kernel.org
> > Cc: linux-media@vger.kernel.org
> > Cc: linux-serial@vger.kernel.org
> > Cc: linux-usb@vger.kernel.org
> > Cc: linux1394-devel@lists.sourceforge.net
> > Cc: platform-driver-x86@vger.kernel.org
> > Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
> 
> Acked-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
> 
> (which my ACPI maintainer hat on).

thanks for the review, I'll add it to the v2 patch.

greg k-h
Greg Kroah-Hartman Jan. 11, 2023, 9:52 a.m. UTC | #5 
On Fri, Nov 25, 2022 at 11:56:18AM +0000, Mauro Carvalho Chehab wrote:
> Em Wed, 23 Nov 2022 13:25:21 +0100
> Greg Kroah-Hartman <gregkh@linuxfoundation.org> escreveu:
> 
> > The uevent() callback in struct device_type should not be modifying the
> > device that is passed into it, so mark it as a const * and propagate the
> > function signature changes out into all relevant subsystems that use
> > this callback.
> 
> Acked-by: Mauro Carvalho Chehab <mchehab@kernel.org>

Thanks for the review.
Greg Kroah-Hartman Jan. 11, 2023, 9:52 a.m. UTC | #6 
On Wed, Nov 23, 2022 at 03:56:54PM +0200, Mika Westerberg wrote:
> On Wed, Nov 23, 2022 at 01:25:21PM +0100, Greg Kroah-Hartman wrote:
> > The uevent() callback in struct device_type should not be modifying the
> > device that is passed into it, so mark it as a const * and propagate the
> > function signature changes out into all relevant subsystems that use
> > this callback.
> > 
> > Cc: Jens Axboe <axboe@kernel.dk>
> > Cc: "Rafael J. Wysocki" <rafael@kernel.org>
> > Cc: Len Brown <lenb@kernel.org>
> > Cc: Stefan Richter <stefanr@s5r6.in-berlin.de>
> > Cc: Wolfram Sang <wsa@kernel.org>
> > Cc: Alexandre Belloni <alexandre.belloni@bootlin.com>
> > Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com>
> > Cc: Sean Young <sean@mess.org>
> > Cc: Mauro Carvalho Chehab <mchehab@kernel.org>
> > Cc: Rob Herring <robh+dt@kernel.org>
> > Cc: Frank Rowand <frowand.list@gmail.com>
> > Cc: Maximilian Luz <luzmaximilian@gmail.com>
> > Cc: Hans de Goede <hdegoede@redhat.com>
> > Cc: Mark Gross <markgross@kernel.org>
> > Cc: Vinod Koul <vkoul@kernel.org>
> > Cc: Bard Liao <yung-chuan.liao@linux.intel.com>
> > Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
> > Cc: Sanyog Kale <sanyog.r.kale@intel.com>
> > Cc: Andreas Noever <andreas.noever@gmail.com>
> > Cc: Michael Jamet <michael.jamet@intel.com>
> > Cc: Mika Westerberg <mika.westerberg@linux.intel.com>
> 
> Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com> # for Thunderbolt

Thanks for the review.
diff mbox series

Patch

diff --git a/block/partitions/core.c b/block/partitions/core.c
index b8112f52d388..7b8ef6296abd 100644
--- a/block/partitions/core.c
+++ b/block/partitions/core.c
@@ -254,9 +254,9 @@  static void part_release(struct device *dev)
 	iput(dev_to_bdev(dev)->bd_inode);
 }
 
-static int part_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int part_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
-	struct block_device *part = dev_to_bdev(dev);
+	const struct block_device *part = dev_to_bdev(dev);
 
 	add_uevent_var(env, "PARTN=%u", part->bd_partno);
 	if (part->bd_meta_info && part->bd_meta_info->volname[0])
diff --git a/drivers/acpi/device_sysfs.c b/drivers/acpi/device_sysfs.c
index 120873dad2cc..daff2c0c5c52 100644
--- a/drivers/acpi/device_sysfs.c
+++ b/drivers/acpi/device_sysfs.c
@@ -133,7 +133,7 @@  static void acpi_hide_nondev_subnodes(struct acpi_device_data *data)
  *         -EINVAL: output error
  *         -ENOMEM: output is truncated
  */
-static int create_pnp_modalias(struct acpi_device *acpi_dev, char *modalias,
+static int create_pnp_modalias(const struct acpi_device *acpi_dev, char *modalias,
 			       int size)
 {
 	int len;
@@ -191,7 +191,7 @@  static int create_pnp_modalias(struct acpi_device *acpi_dev, char *modalias,
  * only be called for devices having ACPI_DT_NAMESPACE_HID in their list of
  * ACPI/PNP IDs.
  */
-static int create_of_modalias(struct acpi_device *acpi_dev, char *modalias,
+static int create_of_modalias(const struct acpi_device *acpi_dev, char *modalias,
 			      int size)
 {
 	struct acpi_buffer buf = { ACPI_ALLOCATE_BUFFER };
@@ -239,7 +239,7 @@  static int create_of_modalias(struct acpi_device *acpi_dev, char *modalias,
 	return len;
 }
 
-int __acpi_device_uevent_modalias(struct acpi_device *adev,
+int __acpi_device_uevent_modalias(const struct acpi_device *adev,
 				  struct kobj_uevent_env *env)
 {
 	int len;
@@ -277,7 +277,7 @@  int __acpi_device_uevent_modalias(struct acpi_device *adev,
  * Because other buses do not support ACPI HIDs & CIDs, e.g. for a device with
  * hid:IBM0001 and cid:ACPI0001 you get: "acpi:IBM0001:ACPI0001".
  */
-int acpi_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env)
+int acpi_device_uevent_modalias(const struct device *dev, struct kobj_uevent_env *env)
 {
 	return __acpi_device_uevent_modalias(acpi_companion_match(dev), env);
 }
diff --git a/drivers/acpi/internal.h b/drivers/acpi/internal.h
index 219c02df9a08..d422884eb3d0 100644
--- a/drivers/acpi/internal.h
+++ b/drivers/acpi/internal.h
@@ -120,7 +120,7 @@  int acpi_bus_register_early_device(int type);
                      Device Matching and Notification
    -------------------------------------------------------------------------- */
 struct acpi_device *acpi_companion_match(const struct device *dev);
-int __acpi_device_uevent_modalias(struct acpi_device *adev,
+int __acpi_device_uevent_modalias(const struct acpi_device *adev,
 				  struct kobj_uevent_env *env);
 
 /* --------------------------------------------------------------------------
diff --git a/drivers/firewire/core-device.c b/drivers/firewire/core-device.c
index adddd8c45d0c..aa597cda0d88 100644
--- a/drivers/firewire/core-device.c
+++ b/drivers/firewire/core-device.c
@@ -133,7 +133,7 @@  static void get_ids(const u32 *directory, int *id)
 	}
 }
 
-static void get_modalias_ids(struct fw_unit *unit, int *id)
+static void get_modalias_ids(const struct fw_unit *unit, int *id)
 {
 	get_ids(&fw_parent_device(unit)->config_rom[5], id);
 	get_ids(unit->directory, id);
@@ -195,7 +195,7 @@  static void fw_unit_remove(struct device *dev)
 	driver->remove(fw_unit(dev));
 }
 
-static int get_modalias(struct fw_unit *unit, char *buffer, size_t buffer_size)
+static int get_modalias(const struct fw_unit *unit, char *buffer, size_t buffer_size)
 {
 	int id[] = {0, 0, 0, 0};
 
@@ -206,9 +206,9 @@  static int get_modalias(struct fw_unit *unit, char *buffer, size_t buffer_size)
 			id[0], id[1], id[2], id[3]);
 }
 
-static int fw_unit_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int fw_unit_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
-	struct fw_unit *unit = fw_unit(dev);
+	const struct fw_unit *unit = fw_unit(dev);
 	char modalias[64];
 
 	get_modalias(unit, modalias, sizeof(modalias));
diff --git a/drivers/i2c/i2c-core-base.c b/drivers/i2c/i2c-core-base.c
index b4edf10e8fd0..fb16e33e52c6 100644
--- a/drivers/i2c/i2c-core-base.c
+++ b/drivers/i2c/i2c-core-base.c
@@ -136,9 +136,9 @@  static int i2c_device_match(struct device *dev, struct device_driver *drv)
 	return 0;
 }
 
-static int i2c_device_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int i2c_device_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
-	struct i2c_client *client = to_i2c_client(dev);
+	const struct i2c_client *client = to_i2c_client(dev);
 	int rc;
 
 	rc = of_device_uevent_modalias(dev, env);
diff --git a/drivers/i3c/device.c b/drivers/i3c/device.c
index e92d3e9a52bd..05f8ab762e34 100644
--- a/drivers/i3c/device.c
+++ b/drivers/i3c/device.c
@@ -58,7 +58,7 @@  EXPORT_SYMBOL_GPL(i3c_device_do_priv_xfers);
  *
  * Retrieve I3C dev info.
  */
-void i3c_device_get_info(struct i3c_device *dev,
+void i3c_device_get_info(const struct i3c_device *dev,
 			 struct i3c_device_info *info)
 {
 	if (!info)
@@ -194,7 +194,7 @@  EXPORT_SYMBOL_GPL(i3cdev_to_dev);
  *
  * Return: a pointer to an I3C device object.
  */
-struct i3c_device *dev_to_i3cdev(struct device *dev)
+struct i3c_device *dev_to_i3cdev(const struct device *dev)
 {
 	return container_of(dev, struct i3c_device, dev);
 }
diff --git a/drivers/i3c/master.c b/drivers/i3c/master.c
index 351c81a929a6..bf1a2b2f34c4 100644
--- a/drivers/i3c/master.c
+++ b/drivers/i3c/master.c
@@ -273,9 +273,9 @@  static struct attribute *i3c_device_attrs[] = {
 };
 ATTRIBUTE_GROUPS(i3c_device);
 
-static int i3c_device_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int i3c_device_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
-	struct i3c_device *i3cdev = dev_to_i3cdev(dev);
+	const struct i3c_device *i3cdev = dev_to_i3cdev(dev);
 	struct i3c_device_info devinfo;
 	u16 manuf, part, ext;
 
diff --git a/drivers/input/input.c b/drivers/input/input.c
index 50597165dc54..a612afffa196 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1371,7 +1371,7 @@  INPUT_DEV_STRING_ATTR_SHOW(phys);
 INPUT_DEV_STRING_ATTR_SHOW(uniq);
 
 static int input_print_modalias_bits(char *buf, int size,
-				     char name, unsigned long *bm,
+				     char name, const unsigned long *bm,
 				     unsigned int min_bit, unsigned int max_bit)
 {
 	int len = 0, i;
@@ -1383,7 +1383,7 @@  static int input_print_modalias_bits(char *buf, int size,
 	return len;
 }
 
-static int input_print_modalias(char *buf, int size, struct input_dev *id,
+static int input_print_modalias(char *buf, int size, const struct input_dev *id,
 				int add_cr)
 {
 	int len;
@@ -1431,7 +1431,7 @@  static ssize_t input_dev_show_modalias(struct device *dev,
 }
 static DEVICE_ATTR(modalias, S_IRUGO, input_dev_show_modalias, NULL);
 
-static int input_print_bitmap(char *buf, int buf_size, unsigned long *bitmap,
+static int input_print_bitmap(char *buf, int buf_size, const unsigned long *bitmap,
 			      int max, int add_cr);
 
 static ssize_t input_dev_show_properties(struct device *dev,
@@ -1523,7 +1523,7 @@  static const struct attribute_group input_dev_id_attr_group = {
 	.attrs	= input_dev_id_attrs,
 };
 
-static int input_print_bitmap(char *buf, int buf_size, unsigned long *bitmap,
+static int input_print_bitmap(char *buf, int buf_size, const unsigned long *bitmap,
 			      int max, int add_cr)
 {
 	int i;
@@ -1620,7 +1620,7 @@  static void input_dev_release(struct device *device)
  * device bitfields.
  */
 static int input_add_uevent_bm_var(struct kobj_uevent_env *env,
-				   const char *name, unsigned long *bitmap, int max)
+				   const char *name, const unsigned long *bitmap, int max)
 {
 	int len;
 
@@ -1638,7 +1638,7 @@  static int input_add_uevent_bm_var(struct kobj_uevent_env *env,
 }
 
 static int input_add_uevent_modalias_var(struct kobj_uevent_env *env,
-					 struct input_dev *dev)
+					 const struct input_dev *dev)
 {
 	int len;
 
@@ -1676,9 +1676,9 @@  static int input_add_uevent_modalias_var(struct kobj_uevent_env *env,
 			return err;					\
 	} while (0)
 
-static int input_dev_uevent(struct device *device, struct kobj_uevent_env *env)
+static int input_dev_uevent(const struct device *device, struct kobj_uevent_env *env)
 {
-	struct input_dev *dev = to_input_dev(device);
+	const struct input_dev *dev = to_input_dev(device);
 
 	INPUT_ADD_HOTPLUG_VAR("PRODUCT=%x/%x/%x/%x",
 				dev->id.bustype, dev->id.vendor,
diff --git a/drivers/media/rc/rc-main.c b/drivers/media/rc/rc-main.c
index 527d9324742b..6bdad6341844 100644
--- a/drivers/media/rc/rc-main.c
+++ b/drivers/media/rc/rc-main.c
@@ -1614,7 +1614,7 @@  static void rc_dev_release(struct device *device)
 	kfree(dev);
 }
 
-static int rc_dev_uevent(struct device *device, struct kobj_uevent_env *env)
+static int rc_dev_uevent(const struct device *device, struct kobj_uevent_env *env)
 {
 	struct rc_dev *dev = to_rc_dev(device);
 	int ret = 0;
diff --git a/drivers/of/device.c b/drivers/of/device.c
index c674a13c3055..dda51b7ce597 100644
--- a/drivers/of/device.c
+++ b/drivers/of/device.c
@@ -248,7 +248,7 @@  const void *of_device_get_match_data(const struct device *dev)
 }
 EXPORT_SYMBOL(of_device_get_match_data);
 
-static ssize_t of_device_get_modalias(struct device *dev, char *str, ssize_t len)
+static ssize_t of_device_get_modalias(const struct device *dev, char *str, ssize_t len)
 {
 	const char *compat;
 	char *c;
@@ -372,7 +372,7 @@  void of_device_uevent(const struct device *dev, struct kobj_uevent_env *env)
 	mutex_unlock(&of_mutex);
 }
 
-int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env)
+int of_device_uevent_modalias(const struct device *dev, struct kobj_uevent_env *env)
 {
 	int sl;
 
diff --git a/drivers/platform/surface/aggregator/bus.c b/drivers/platform/surface/aggregator/bus.c
index de539938896e..407eb55050a6 100644
--- a/drivers/platform/surface/aggregator/bus.c
+++ b/drivers/platform/surface/aggregator/bus.c
@@ -35,9 +35,9 @@  static struct attribute *ssam_device_attrs[] = {
 };
 ATTRIBUTE_GROUPS(ssam_device);
 
-static int ssam_device_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int ssam_device_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
-	struct ssam_device *sdev = to_ssam_device(dev);
+	const struct ssam_device *sdev = to_ssam_device(dev);
 
 	return add_uevent_var(env, "MODALIAS=ssam:d%02Xc%02Xt%02Xi%02Xf%02X",
 			      sdev->uid.domain, sdev->uid.category,
diff --git a/drivers/soundwire/bus_type.c b/drivers/soundwire/bus_type.c
index 04b3529f8929..26c9a0a85d49 100644
--- a/drivers/soundwire/bus_type.c
+++ b/drivers/soundwire/bus_type.c
@@ -58,9 +58,9 @@  int sdw_slave_modalias(const struct sdw_slave *slave, char *buf, size_t size)
 			slave->id.sdw_version, slave->id.class_id);
 }
 
-int sdw_slave_uevent(struct device *dev, struct kobj_uevent_env *env)
+int sdw_slave_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
-	struct sdw_slave *slave = dev_to_sdw_dev(dev);
+	const struct sdw_slave *slave = dev_to_sdw_dev(dev);
 	char modalias[32];
 
 	sdw_slave_modalias(slave, modalias, sizeof(modalias));
diff --git a/drivers/thunderbolt/switch.c b/drivers/thunderbolt/switch.c
index 60da5c23ccaf..2f4ef156b210 100644
--- a/drivers/thunderbolt/switch.c
+++ b/drivers/thunderbolt/switch.c
@@ -2175,9 +2175,9 @@  static void tb_switch_release(struct device *dev)
 	kfree(sw);
 }
 
-static int tb_switch_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int tb_switch_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
-	struct tb_switch *sw = tb_to_switch(dev);
+	const struct tb_switch *sw = tb_to_switch(dev);
 	const char *type;
 
 	if (sw->config.thunderbolt_version == USB4_VERSION_1_0) {
diff --git a/drivers/thunderbolt/tb.h b/drivers/thunderbolt/tb.h
index f9786976f5ec..909da0a98134 100644
--- a/drivers/thunderbolt/tb.h
+++ b/drivers/thunderbolt/tb.h
@@ -815,7 +815,7 @@  static inline bool tb_is_switch(const struct device *dev)
 	return dev->type == &tb_switch_type;
 }
 
-static inline struct tb_switch *tb_to_switch(struct device *dev)
+static inline struct tb_switch *tb_to_switch(const struct device *dev)
 {
 	if (tb_is_switch(dev))
 		return container_of(dev, struct tb_switch, dev);
diff --git a/drivers/thunderbolt/xdomain.c b/drivers/thunderbolt/xdomain.c
index f00b2f62d8e3..aeb40a384bea 100644
--- a/drivers/thunderbolt/xdomain.c
+++ b/drivers/thunderbolt/xdomain.c
@@ -881,7 +881,7 @@  static ssize_t key_show(struct device *dev, struct device_attribute *attr,
 }
 static DEVICE_ATTR_RO(key);
 
-static int get_modalias(struct tb_service *svc, char *buf, size_t size)
+static int get_modalias(const struct tb_service *svc, char *buf, size_t size)
 {
 	return snprintf(buf, size, "tbsvc:k%sp%08Xv%08Xr%08X", svc->key,
 			svc->prtcid, svc->prtcvers, svc->prtcrevs);
@@ -953,9 +953,9 @@  static const struct attribute_group *tb_service_attr_groups[] = {
 	NULL,
 };
 
-static int tb_service_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int tb_service_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
-	struct tb_service *svc = container_of(dev, struct tb_service, dev);
+	const struct tb_service *svc = container_of(dev, struct tb_service, dev);
 	char modalias[64];
 
 	get_modalias(svc, modalias, sizeof(modalias));
diff --git a/drivers/tty/serdev/core.c b/drivers/tty/serdev/core.c
index 0180e1e4e75d..aa80de3a8194 100644
--- a/drivers/tty/serdev/core.c
+++ b/drivers/tty/serdev/core.c
@@ -42,7 +42,7 @@  static struct attribute *serdev_device_attrs[] = {
 };
 ATTRIBUTE_GROUPS(serdev_device);
 
-static int serdev_device_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int serdev_device_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
 	int rc;
 
diff --git a/drivers/usb/core/message.c b/drivers/usb/core/message.c
index 4d59d927ae3e..c397574a6570 100644
--- a/drivers/usb/core/message.c
+++ b/drivers/usb/core/message.c
@@ -1818,11 +1818,11 @@  void usb_authorize_interface(struct usb_interface *intf)
 	}
 }
 
-static int usb_if_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int usb_if_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
-	struct usb_device *usb_dev;
-	struct usb_interface *intf;
-	struct usb_host_interface *alt;
+	const struct usb_device *usb_dev;
+	const struct usb_interface *intf;
+	const struct usb_host_interface *alt;
 
 	intf = to_usb_interface(dev);
 	usb_dev = interface_to_usbdev(intf);
diff --git a/drivers/usb/core/usb.c b/drivers/usb/core/usb.c
index 11b15d7b357a..8527c06b65e6 100644
--- a/drivers/usb/core/usb.c
+++ b/drivers/usb/core/usb.c
@@ -423,9 +423,9 @@  static void usb_release_dev(struct device *dev)
 	kfree(udev);
 }
 
-static int usb_dev_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int usb_dev_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
-	struct usb_device *usb_dev;
+	const struct usb_device *usb_dev;
 
 	usb_dev = to_usb_device(dev);
 
diff --git a/drivers/usb/phy/phy.c b/drivers/usb/phy/phy.c
index 1b24492bb4e5..4b468bde19cf 100644
--- a/drivers/usb/phy/phy.c
+++ b/drivers/usb/phy/phy.c
@@ -80,7 +80,7 @@  static struct usb_phy *__of_usb_find_phy(struct device_node *node)
 	return ERR_PTR(-EPROBE_DEFER);
 }
 
-static struct usb_phy *__device_to_usb_phy(struct device *dev)
+static struct usb_phy *__device_to_usb_phy(const struct device *dev)
 {
 	struct usb_phy *usb_phy;
 
@@ -145,9 +145,9 @@  static void usb_phy_notify_charger_work(struct work_struct *work)
 	kobject_uevent(&usb_phy->dev->kobj, KOBJ_CHANGE);
 }
 
-static int usb_phy_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int usb_phy_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
-	struct usb_phy *usb_phy;
+	const struct usb_phy *usb_phy;
 	char uchger_state[50] = { 0 };
 	char uchger_type[50] = { 0 };
 	unsigned long flags;
diff --git a/drivers/usb/roles/class.c b/drivers/usb/roles/class.c
index a3575a5a18ce..3708fb70b693 100644
--- a/drivers/usb/roles/class.c
+++ b/drivers/usb/roles/class.c
@@ -271,8 +271,7 @@  static const struct attribute_group *usb_role_switch_groups[] = {
 	NULL,
 };
 
-static int
-usb_role_switch_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int usb_role_switch_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
 	int ret;
 
diff --git a/drivers/usb/typec/class.c b/drivers/usb/typec/class.c
index bd5e5dd70431..8e2b2077f262 100644
--- a/drivers/usb/typec/class.c
+++ b/drivers/usb/typec/class.c
@@ -1718,7 +1718,7 @@  static const struct attribute_group *typec_groups[] = {
 	NULL
 };
 
-static int typec_uevent(struct device *dev, struct kobj_uevent_env *env)
+static int typec_uevent(const struct device *dev, struct kobj_uevent_env *env)
 {
 	int ret;
 
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 3015235d65e3..fc956c3f8324 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -722,7 +722,7 @@  const struct acpi_device_id *acpi_match_device(const struct acpi_device_id *ids,
 const void *acpi_device_get_match_data(const struct device *dev);
 extern bool acpi_driver_match_device(struct device *dev,
 				     const struct device_driver *drv);
-int acpi_device_uevent_modalias(struct device *, struct kobj_uevent_env *);
+int acpi_device_uevent_modalias(const struct device *, struct kobj_uevent_env *);
 int acpi_device_modalias(struct device *, char *, int);
 
 struct platform_device *acpi_create_platform_device(struct acpi_device *,
@@ -957,7 +957,7 @@  static inline union acpi_object *acpi_evaluate_dsm(acpi_handle handle,
 	return NULL;
 }
 
-static inline int acpi_device_uevent_modalias(struct device *dev,
+static inline int acpi_device_uevent_modalias(const struct device *dev,
 				struct kobj_uevent_env *env)
 {
 	return -ENODEV;
diff --git a/include/linux/device.h b/include/linux/device.h
index 84ae52de6746..46093bae6905 100644
--- a/include/linux/device.h
+++ b/include/linux/device.h
@@ -88,7 +88,7 @@  int subsys_virtual_register(struct bus_type *subsys,
 struct device_type {
 	const char *name;
 	const struct attribute_group **groups;
-	int (*uevent)(struct device *dev, struct kobj_uevent_env *env);
+	int (*uevent)(const struct device *dev, struct kobj_uevent_env *env);
 	char *(*devnode)(struct device *dev, umode_t *mode,
 			 kuid_t *uid, kgid_t *gid);
 	void (*release)(struct device *dev);
diff --git a/include/linux/firewire.h b/include/linux/firewire.h
index 980019053e54..4c882d57df02 100644
--- a/include/linux/firewire.h
+++ b/include/linux/firewire.h
@@ -208,7 +208,7 @@  struct fw_device {
 	struct fw_attribute_group attribute_group;
 };
 
-static inline struct fw_device *fw_device(struct device *dev)
+static inline struct fw_device *fw_device(const struct device *dev)
 {
 	return container_of(dev, struct fw_device, device);
 }
@@ -229,7 +229,7 @@  struct fw_unit {
 	struct fw_attribute_group attribute_group;
 };
 
-static inline struct fw_unit *fw_unit(struct device *dev)
+static inline struct fw_unit *fw_unit(const struct device *dev)
 {
 	return container_of(dev, struct fw_unit, device);
 }
@@ -246,7 +246,7 @@  static inline void fw_unit_put(struct fw_unit *unit)
 	put_device(&unit->device);
 }
 
-static inline struct fw_device *fw_parent_device(struct fw_unit *unit)
+static inline struct fw_device *fw_parent_device(const struct fw_unit *unit)
 {
 	return fw_device(unit->device.parent);
 }
diff --git a/include/linux/i3c/device.h b/include/linux/i3c/device.h
index 8242e13e7b0b..cda61c1d6d60 100644
--- a/include/linux/i3c/device.h
+++ b/include/linux/i3c/device.h
@@ -186,7 +186,7 @@  static inline struct i3c_driver *drv_to_i3cdrv(struct device_driver *drv)
 }
 
 struct device *i3cdev_to_dev(struct i3c_device *i3cdev);
-struct i3c_device *dev_to_i3cdev(struct device *dev);
+struct i3c_device *dev_to_i3cdev(const struct device *dev);
 
 const struct i3c_device_id *
 i3c_device_match_id(struct i3c_device *i3cdev,
@@ -293,7 +293,7 @@  int i3c_device_do_priv_xfers(struct i3c_device *dev,
 			     struct i3c_priv_xfer *xfers,
 			     int nxfers);
 
-void i3c_device_get_info(struct i3c_device *dev, struct i3c_device_info *info);
+void i3c_device_get_info(const struct i3c_device *dev, struct i3c_device_info *info);
 
 struct i3c_ibi_payload {
 	unsigned int len;
diff --git a/include/linux/of_device.h b/include/linux/of_device.h
index ab7d557d541d..f4b57614979d 100644
--- a/include/linux/of_device.h
+++ b/include/linux/of_device.h
@@ -36,7 +36,7 @@  extern ssize_t of_device_modalias(struct device *dev, char *str, ssize_t len);
 extern int of_device_request_module(struct device *dev);
 
 extern void of_device_uevent(const struct device *dev, struct kobj_uevent_env *env);
-extern int of_device_uevent_modalias(struct device *dev, struct kobj_uevent_env *env);
+extern int of_device_uevent_modalias(const struct device *dev, struct kobj_uevent_env *env);
 
 static inline struct device_node *of_cpu_device_node_get(int cpu)
 {
@@ -83,7 +83,7 @@  static inline int of_device_request_module(struct device *dev)
 	return -ENODEV;
 }
 
-static inline int of_device_uevent_modalias(struct device *dev,
+static inline int of_device_uevent_modalias(const struct device *dev,
 				   struct kobj_uevent_env *env)
 {
 	return -ENODEV;
diff --git a/include/linux/soundwire/sdw_type.h b/include/linux/soundwire/sdw_type.h
index 52eb66cd11bc..d8c27f1e5559 100644
--- a/include/linux/soundwire/sdw_type.h
+++ b/include/linux/soundwire/sdw_type.h
@@ -21,7 +21,7 @@  static inline int is_sdw_slave(const struct device *dev)
 int __sdw_register_driver(struct sdw_driver *drv, struct module *owner);
 void sdw_unregister_driver(struct sdw_driver *drv);
 
-int sdw_slave_uevent(struct device *dev, struct kobj_uevent_env *env);
+int sdw_slave_uevent(const struct device *dev, struct kobj_uevent_env *env);
 
 /**
  * module_sdw_driver() - Helper macro for registering a Soundwire driver
diff --git a/include/linux/surface_aggregator/device.h b/include/linux/surface_aggregator/device.h
index 46c45d1b6368..a5dff729edb7 100644
--- a/include/linux/surface_aggregator/device.h
+++ b/include/linux/surface_aggregator/device.h
@@ -229,7 +229,7 @@  static inline bool is_ssam_device(struct device *d)
  * Return: Returns a pointer to the &struct ssam_device wrapping the given
  * device @d.
  */
-static inline struct ssam_device *to_ssam_device(struct device *d)
+static inline struct ssam_device *to_ssam_device(const struct device *d)
 {
 	return container_of(d, struct ssam_device, dev);
 }