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clang-16 started warning about incompatible function pointers here:

sound/pci/aw2/aw2-alsa.c:363:11: error: cast from 'void (*)(struct snd_pcm_substream *)' to 'snd_aw2_saa7146_it_cb' (aka 'void (*)(void *)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
  363 |                                                     (snd_aw2_saa7146_it_cb)
      |                                                     ^~~~~~~~~~~~~~~~~~~~~~~
  364 |                                                     snd_pcm_period_elapsed,
      |                                                     ~~~~~~~~~~~~~~~~~~~~~~
sound/pci/aw2/aw2-alsa.c:392:10: error: cast from 'void (*)(struct snd_pcm_substream *)' to 'snd_aw2_saa7146_it_cb' (aka 'void (*)(void *)') converts to incompatible function type [-Werror,-Wcast-function-type-strict]
  392 |                                                    (snd_aw2_saa7146_it_cb)
      |                                               ...