Pierre-Louis Bossart 64778b022e ASoC: Intel: bdw_rt286: add checks to avoid static analysis warnings
snd_soc_card_get_codec_dai() can return NULL, but that value is not
checked for, leading to false-positive static analysis warnings

sound/soc/intel/boards/bdw_rt286.c:190:16: error: dereference of NULL
‘codec_dai’ [CWE-476] [-Werror=analyzer-null-dereference]

  190 |         return snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
      |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
  ‘card_suspend_pre’: event 1
    |
    |  190 |         return snd_soc_component_set_jack(codec_dai->component, NULL, NULL);
    |      |                ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
    |      |                |
    |      |                (1) dereference of NULL ‘codec_dai’

This NULL dereference cannot happen, the codec-dai "rt286-aif1" must exists
otherwise the card would not be created. Static analysis cannot know
that however so we might as well squelch this report.

Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Reviewed-by: Rander Wang <rander.wang@intel.com>
Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Reviewed-by: Yaochun Hung <yc.hung@mediatek.com>
Link: https://lore.kernel.org/r/20230731213748.440285-7-pierre-louis.bossart@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
2023-07-31 23:22:17 +01:00
2023-07-30 23:38:02 +01:00
…
…
2023-07-30 13:23:47 -07:00
…

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.
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