linux-toradex.git/include/linux/i3c, branch v6.6-rc5

i3c: Make i3c_master_unregister() return void

2023-03-21T18:25:25+00:00

The function returned zero unconditionally. Switch the return type to void
and simplify the callers accordingly.

Signed-off-by: Uwe Kleine-König 
Reviewed-by: Miquel Raynal 
Link: https://lore.kernel.org/r/20230318233311.265186-2-u.kleine-koenig@pengutronix.de
Signed-off-by: Alexandre Belloni

i3c: Correct reference to the I²C device data type

2023-03-13T13:41:04+00:00

I²C peripheral devices that are connected to the controller are
represented in the Linux kernel as objects of the struct i2c_client.
Fix this in the header file.

Signed-off-by: Andy Shevchenko 
Link: https://lore.kernel.org/r/20230302161206.38106-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Alexandre Belloni

i3c: fix device.h kernel-doc warnings

2023-02-16T12:42:22+00:00

Fix all kernel-doc warnings in :

include/linux/i3c/device.h:27: warning: contents before sections
include/linux/i3c/device.h:196: warning: Excess function parameter 'dev' description in 'dev_to_i3cdev'

Fixes: fa838c8ce537 ("i3c: move dev_to_i3cdev() to use container_of_const()")
Fixes: 3a379bbcea0a ("i3c: Add core I3C infrastructure")
Signed-off-by: Randy Dunlap 
Cc: Boris Brezillon 
Cc: Greg Kroah-Hartman 
Cc: Alexandre Belloni 
Cc: linux-i3c@lists.infradead.org
Link: https://lore.kernel.org/r/20230213070324.1564-1-rdunlap@infradead.org
Signed-off-by: Greg Kroah-Hartman

driver core: make struct device_type.uevent() take a const *

2023-01-27T12:45:36+00:00

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: Alan Stern 
Cc: Andreas Noever 
Cc: Andy Shevchenko 
Cc: Bard Liao 
Cc: Chaitanya Kulkarni 
Cc: Dan Williams 
Cc: Dmitry Torokhov 
Cc: Frank Rowand 
Cc: Ira Weiny 
Cc: Jason Gunthorpe 
Cc: Jens Axboe 
Cc: Jilin Yuan 
Cc: Jiri Slaby 
Cc: Len Brown 
Cc: Mark Gross 
Cc: "Martin K. Petersen" 
Cc: "Matthew Wilcox (Oracle)" 
Cc: Maximilian Luz 
Cc: Michael Jamet 
Cc: Ming Lei 
Cc: Pierre-Louis Bossart 
Cc: Rob Herring 
Cc: Sakari Ailus 
Cc: Sanyog Kale 
Cc: Sean Young 
Cc: Stefan Richter 
Cc: Thomas Gleixner 
Cc: Won Chung 
Cc: Yehezkel Bernat 
Acked-by: Rafael J. Wysocki 
Acked-by: Mika Westerberg  # for Thunderbolt
Acked-by: Mauro Carvalho Chehab 
Acked-by: Alexandre Belloni 
Acked-by: Heikki Krogerus 
Acked-by: Wolfram Sang 
Acked-by: Vinod Koul 
Acked-by: Hans de Goede 
Link: https://lore.kernel.org/r/20230111113018.459199-6-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman

i3c: move dev_to_i3cdev() to use container_of_const()

2023-01-27T12:45:32+00:00

The driver core is changing to pass some pointers as const, so move
dev_to_i3cdev() to use container_of_const() to handle this change.
dev_to_i3cdev() now properly keeps the const-ness of the pointer passed
into it, while as before it could be lost.

Acked-by: Alexandre Belloni 
Acked-by: Hans de Goede 
Link: https://lore.kernel.org/r/20230111113018.459199-3-gregkh@linuxfoundation.org
Signed-off-by: Greg Kroah-Hartman

i3c: export SETDASA method

2022-12-11T20:25:58+00:00

Because not all I3C drivers have the hot-join feature ready, and
especially not all I3C devices support hot-join feature, exporting
SETDASA method could be useful. With this function, the I3C controller
could perform a DAA to I3C devices when users decide to turn these I3C
devices off and on again during run-time.

Tested: This change has been tested with turnning off an I3C device and
turning on it again during run-time. The device driver calls SETDASA
method to perform DAA to the device. And communication between I3C
controller and device is set up again correctly.

Signed-off-by: Jack Chen 
Link: https://lore.kernel.org/r/20221207205059.3848851-1-zenghuchen@google.com
Signed-off-by: Alexandre Belloni

i3c: Correct the macro module_i3c_i2c_driver

2022-12-11T20:20:27+00:00

Present definition for module_i3c_i2c_driver uses only the
1st argument i.e., struct i3c_driver.
Irrespective of CONFIG_I3C being enabled/disabled,
struct i2c_driver is never passed to module_driver()

Passing struct i2c_driver as the 4th argument works.

Signed-off-by: Akshay Gupta 
Signed-off-by: Naveen Krishna Chatradhi 
Link: https://lore.kernel.org/r/20221205105413.937704-1-naveenkrishna.chatradhi@amd.com
Signed-off-by: Alexandre Belloni

Merge tag 'i3c/for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux

2022-03-30T17:36:41+00:00

Pull i3c updates from Alexandre Belloni:

 - support dynamic addition of i2c devices

* tag 'i3c/for-5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux:
  i3c: fix uninitialized variable use in i2c setup
  i3c: support dynamically added i2c devices
  i3c: remove i2c board info from i2c_dev_desc

i3c: remove i2c board info from i2c_dev_desc

2022-03-04T10:39:03+00:00

I2C board info is only required during adapter setup so there is no
requirement to keeping a pointer to it once running.  To support dynamic
device addition we can't rely on board info - user-space creation
through sysfs won't have a boardinfo.

Cc: Alexandre Belloni 
Signed-off-by: Jamie Iles 
Signed-off-by: Alexandre Belloni 
Link: https://lore.kernel.org/r/20220117174816.1963463-2-quic_jiles@quicinc.com

treewide: Replace zero-length arrays with flexible-array members

2022-02-17T13:00:39+00:00

There is a regular need in the kernel to provide a way to declare
having a dynamically sized set of trailing elements in a structure.
Kernel code should always use “flexible array members”[1] for these
cases. The older style of one-element or zero-length arrays should
no longer be used[2].

This code was transformed with the help of Coccinelle:
(next-20220214$ spatch --jobs $(getconf _NPROCESSORS_ONLN) --sp-file script.cocci --include-headers --dir . > output.patch)

@@
identifier S, member, array;
type T1, T2;
@@

struct S {
  ...
  T1 member;
  T2 array[
- 0
  ];
};

UAPI and wireless changes were intentionally excluded from this patch
and will be sent out separately.

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays

Link: https://github.com/KSPP/linux/issues/78
Reviewed-by: Kees Cook 
Signed-off-by: Gustavo A. R. Silva