ASoC: wm8962: Fix regulator notifier and beep leaks on card re-bind

wm8962 registers its regulator disable notifiers and allocates its beep
input device from the ASoC component probe, but the associated devres
cleanup is tied to the underlying I2C device.

These resources are only leaked when the sound card is unregistered and
re-registered while the I2C device stays bound. On that path the
component probe runs again and:

- re-registers the same notifier_block on the still-registered
  regulator notifier chain, which triggers

    notifier callback wm8962_regulator_event_N already registered
    WARNING: ... at kernel/notifier.c:23 notifier_chain_register

  and corrupts the chain.

- allocates and registers a new beep input device every time while
  wm8962_free_beep() only clears the pointer, leaking the previous
  input device and its sysfs/input node.

Fix both:
- Move the regulator notifier registration to wm8962_i2c_probe() so it
  runs once per I2C device bind.

- Allocate the beep device with input_allocate_device() and pair it
  with the component lifecycle: input_free_device() on registration
  failure and input_unregister_device() in wm8962_free_beep().

Signed-off-by: Chancel Liu <chancel.liu@nxp.com>
Link: https://patch.msgid.link/20260913101531.2787654-2-chancel.liu@oss.nxp.com
Signed-off-by: Mark Brown <broonie@kernel.org>

0 files changed, 0 insertions, 0 deletions