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[ Upstream commit f9f0a46141e2e39bedb4779c88380d1b5f018c14 ] When myrb_probe() fails the callback might not be set, so we need to validate the 'disable_intr' callback in myrb_cleanup() to not cause a null pointer exception. And while at it do not call myrb_cleanup() if we cannot enable the PCI device at all. Link: https://lore.kernel.org/r/20220523120244.99515-1-hare@suse.de Reported-by: Zheyu Ma <zheyuma97@gmail.com> Tested-by: Zheyu Ma <zheyuma97@gmail.com> Signed-off-by: Hannes Reinecke <hare@suse.de> Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by: Sasha Levin <sashal@kernel.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.