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the value of mmap_len in dma_map_region may be incorrect. For example, the page size is 0x100, offset is 0xf0, mmap_len is 0x120, the map area is 0xf0~0x210. Through calculation of page align in dma_map_region, the offset will be 0x00, mmap_len will be 0x200, the map area will be 0x00~0x200, 0x200~0x210 will not be mapped.
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The text was updated successfully, but these errors were encountered: