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The struct snd_soc_pcm_runtime has a flex array of snd_soc_component objects at its end, and the size is kept in num_components field. We can add __counted_by() annotation for compiler's assistance to catch array overflows. A slight additional change is the assignment of rtd->components[]; the array counter has to be incremented at first for avoiding false-positive reports from compilers. Also, the allocation size of snd_soc_pcm_runtime is cleaned up with the standard struct_size() helper, too. Signed-off-by: Takashi Iwai <tiwai@suse.de> Link: https://patch.msgid.link/20240726155237.21961-1-tiwai@suse.de Signed-off-by: Mark Brown <broonie@kernel.org>