linux-kernel - [PATCH v5 0/4] Export APIs to copy device properties & more

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Date:   Thu,  2 Feb 2017 17:41:24 -0800
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>
Cc:     linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>,
        Mika Westerberg <mika.westerberg@...ux.intel.com>,
        Hans de Goede <hdegoede@...hat.com>,
        Wolfram Sang <wsa@...-dreams.de>
Subject: [PATCH v5 0/4] Export APIs to copy device properties & more

Hi,

Here is the refreshed series exporting APIs to copy statically declared
device properties. The reason is that we want to augment ACPI-based devices
with properties, and drivers usually have a largish DMI table for multiple
models, so it is desirable to mark everything as __initdata/__initconst,
and then copy only the entry matching the device we are running on and
discard the rest.

The last patch is not really about device property APIs, but rather
allowing users to attach properties to i2c_board_info, and have them
attached to instantiated device(s). The reason it is included is because it
depends on device_add_properties() taking const pointer, which is patch #1.

If it seems useful I hope Rafael and Wolfram would figure a way to merge it
:) and ideally give me a stable branch as I have more patches to
platform/chrome and Atmel touchscreen driver depending on them.

v5:
- reshuffle order of patches so that "constness" ones are first
- factor out property_entry_free_data() and make sure we call it for
  properties already successfully copied when property_entry_copy_data()
  in property_entries_dup() fails
- dropped old Acks as patches changed enough

v4:
- do not clobber retrun value of property_copy_string_array() with -ENOMEM

v3:
- fix memory leak in property_copy_string_array() pointed out by Mika
  Westerberg

v2:
- addressed Andy's comments
- added property_entries_free()
- added patch to allow constify values of property arrays
- added i2c patch allowing to attach property to devices via board info

v1:
- initial posting

Dmitry Torokhov (4):
  device property: allow to constify properties
  device property: constify property arrays values
  device property: export code duplicating array of property entries
  i2c: allow specify device properties in i2c_board_info

 drivers/base/property.c  | 229 ++++++++++++++++++++++++++++++-----------------
 drivers/i2c/i2c-core.c   |  16 +++-
 include/linux/i2c.h      |   3 +
 include/linux/property.h |  19 ++--
 4 files changed, 177 insertions(+), 90 deletions(-)

-- 
Dmitry