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commit66affb7bb0upstream. The recently added PM prepare and complete callbacks don't have the sanity check whether the card instance has been properly initialized, which may potentially lead to Oops. This patch adds the azx_is_pm_ready() call in each place appropriately like other PM callbacks. Fixes:f5dac54d9d("ALSA: hda: Separate runtime and system suspend") Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20210329113059.25035-2-tiwai@suse.de Signed-off-by: Takashi Iwai <tiwai@suse.de> 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.