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/Linux-v5.15/arch/arm/mm/
Ddma-mapping.c1168 u32 bitmap_index; in __free_iova() local
1173 bitmap_index = (u32) (addr - mapping->base) / (u32) mapping_size; in __free_iova()
1174 BUG_ON(addr < mapping->base || bitmap_index > mapping->extensions); in __free_iova()
1176 bitmap_base = mapping->base + mapping_size * bitmap_index; in __free_iova()
1192 bitmap_clear(mapping->bitmaps[bitmap_index], start, count); in __free_iova()