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audio: fix cache invalidation in audio_stream_invalidate #10272

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audio: fix cache invalidation in audio_stream_invalidate #10272

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6 changes: 3 additions & 3 deletions src/include/sof/audio/audio_stream.h
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Original file line number Diff line number Diff line change
Expand Up @@ -733,10 +733,10 @@ static inline void audio_stream_invalidate(struct audio_stream *buffer, uint32_t
tail_size = bytes - head_size;
}

dcache_invalidate_region((__sparse_force void __sparse_cache *)buffer->r_ptr, head_size);
sys_cache_data_flush_range((__sparse_force void __sparse_cache *)buffer->r_ptr, head_size);
if (tail_size)
dcache_invalidate_region((__sparse_force void __sparse_cache *)buffer->addr,
tail_size);
sys_cache_data_flush_range((__sparse_force void __sparse_cache *)buffer->addr,
Comment on lines +736 to +738

Copilot AI Sep 30, 2025

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The function name is audio_stream_invalidate() but the implementation uses sys_cache_data_flush_range() instead of sys_cache_data_invd_range(). For cache invalidation, you should use sys_cache_data_invd_range() which invalidates cache lines without writing back dirty data, whereas flush_range() writes back and then invalidates.

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tail_size);
}

/**
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