ASoC: codecs: pm4125: Fix potential conflict when probing two devices

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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>

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Krzysztof Kozlowski 2025-10-23 11:02:50 +02:00 • committed by Mark Brown

parent 123cd174a3

commit fd94857a93

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sound/soc/codecs/pm4125.c

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