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Shenghao Ding b0035df56d ALSA: hda/tas2781: Fix a potential race condition that causes a NULL pointer in case no efi.get_variable exsits
A a potential race condition reported by one of my customers that leads to
a NULL pointer dereference, where the call to efi.get_variable should be
guarded with efi_rt_services_supported() to ensure that function exists.

Fixes: 4fe2385134 ("ALSA: hda/tas2781: Move and unified the calibrated-data getting function for SPI and I2C into the tas2781_hda lib")
Signed-off-by: Shenghao Ding <shenghao-ding@ti.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
History 2025-09-11 18:11:17 +02:00
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README

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 reStructuredText 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.