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commitdc70eb868bupstream. The current code path can lead to warnings because of uninitialized device, which contains, as a consequence, uninitialized kobject. The uninitialized device is passed to of_platform_populate, which will at some point, while creating child device, try to get a reference on uninitialized parent, resulting in the following warning: kobject: '(null)' ((ptrval)): is not initialized, yet kobject_get() is being called. The warning is observed after migrating a kernel 5.10.x to 6.1.x. Reverting commit0d70af3c25("fpga: bridge: Use standard dev_release for class driver") seems to remove the warning. This commit aggregates device_initialize() and device_add() into device_register() but this new call is done AFTER of_platform_populate Fixes:0d70af3c25("fpga: bridge: Use standard dev_release for class driver") Signed-off-by: Alexis Lothoré <alexis.lothore@bootlin.com> Acked-by: Xu Yilun <yilun.xu@intel.com> Link: https://lore.kernel.org/r/20230404133102.2837535-2-alexis.lothore@bootlin.com Signed-off-by: Xu Yilun <yilun.xu@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.