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Qualcomm PM4125 codec is always a single device on the board, however
nothing stops board designers to have two of them, thus same device
driver could probe twice.
Device driver is not ready for that case, because it allocates
statically 'struct regmap_irq_chip' as non-const and stores during
component bind in 'irq_drv_data' member a pointer to per-probe state
container ('struct pm4125_priv').
Second component bind would overwrite the 'irq_drv_data' from previous
device probe, so interrupts would be executed in wrong context.
The fix makes use of currently unused 'struct pm4125_priv' member
'pm4125_regmap_irq_chip', but renames it to a shorter name.
Fixes: 8ad5294849 ("ASoC: codecs: add new pm4125 audio codec driver")
Cc: stable@vger.kernel.org
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://patch.msgid.link/20251023-asoc-regmap-irq-chip-v1-1-17ad32680913@linaro.org
Signed-off-by: Mark Brown <broonie@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 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.