4fb1251925
When the Apple Magic Trackpad 2 is connected over USB it registers four hid_device report descriptors, however, the driver only handles the one with type HID_TYPE_USBMOUSE and ignores the other three, thus, no driver data is attached to them. When the device is disconnected, the remove callback is called for the four hid_device report descriptors, crashing when the driver data is NULL. Check that the driver data is not NULL before using it in the remove callback. Signed-off-by: José Expósito <jose.exposito89@gmail.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
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.