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ee494cf377
Currently v4l2_device_register_subdev_nodes() does not initialize the dev_parent field of the video_device structs it creates for subdevices being registered. This leads to __video_register_device() falling back to the parent device of associated v4l2_device struct, which often does not match the physical device the subdevice is registered for. Due to the problem above, the links between real devices and v4l-subdev nodes cannot be obtained from sysfs, which might be confusing for the userspace trying to identify the hardware. Fix this by initializing the dev_parent field of the video_device struct with the value of dev field of the v4l2_subdev struct. In case of subdevices without a parent struct device, the field will be NULL and the old behavior will be preserved by the semantics of __video_register_device(). Signed-off-by: Tomasz Figa <tfiga@chromium.org> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> |
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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.