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charset=us-ascii Content-Disposition: inline tree: git://git.infradead.org/users/hch/dma-mapping for-next head: 66772d621cbea3d8acfeda4ba1f411030798d26f commit: 8bf4d7154d4c0d281666e5595a843be89147d352 [9/10] page_pool: check for DMA sync shortcut earlier config: riscv-defconfig (https://download.01.org/0day-ci/archive/20240508/202405080101.0mPUjuAp-lkp@intel.com/config) compiler: clang version 19.0.0git (https://github.com/llvm/llvm-project 0ab4458df0688955620b72cc2c72a32dffad3615) reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240508/202405080101.0mPUjuAp-lkp@intel.com/reproduce) If you fix the issue in a separate patch/commit (i.e. not just a new version of the same patch/commit), kindly add following tags | Reported-by: kernel test robot | Closes: https://lore.kernel.org/oe-kbuild-all/202405080101.0mPUjuAp-lkp@intel.com/ All errors (new ones prefixed by >>): In file included from net/core/page_pool.c:13: In file included from include/net/page_pool/helpers.h:55: In file included from include/net/page_pool/types.h:7: In file included from include/linux/ptr_ring.h:26: In file included from include/linux/mm.h:2210: include/linux/vmstat.h:522:36: warning: arithmetic between different enumeration types ('enum node_stat_item' and 'enum lru_list') [-Wenum-enum-conversion] 522 | return node_stat_name(NR_LRU_BASE + lru) + 3; // skip "nr_" | ~~~~~~~~~~~ ^ ~~~ >> net/core/page_pool.c:406:47: error: passing 'const struct page *' to parameter of type 'struct page *' discards qualifiers [-Werror,-Wincompatible-pointer-types-discards-qualifiers] 406 | dma_addr_t dma_addr = page_pool_get_dma_addr(page); | ^~~~ include/net/page_pool/helpers.h:373:62: note: passing argument to parameter 'page' here 373 | static inline dma_addr_t page_pool_get_dma_addr(struct page *page) | ^ 1 warning and 1 error generated. vim +406 net/core/page_pool.c ff7d6b27f894f1 Jesper Dangaard Brouer 2018-04-17 400 8bf4d7154d4c0d Alexander Lobakin 2024-05-07 401 static void __page_pool_dma_sync_for_device(const struct page_pool *pool, 8bf4d7154d4c0d Alexander Lobakin 2024-05-07 402 const struct page *page, 8bf4d7154d4c0d Alexander Lobakin 2024-05-07 403 u32 dma_sync_size) e68bc75691cc3d Lorenzo Bianconi 2019-11-20 404 { 8bf4d7154d4c0d Alexander Lobakin 2024-05-07 405 #if defined(CONFIG_HAS_DMA) && defined(CONFIG_DMA_NEED_SYNC) 9ddb3c14afba8b Matthew Wilcox (Oracle 2021-05-14 @406) dma_addr_t dma_addr = page_pool_get_dma_addr(page); 9ddb3c14afba8b Matthew Wilcox (Oracle 2021-05-14 407) e68bc75691cc3d Lorenzo Bianconi 2019-11-20 408 dma_sync_size = min(dma_sync_size, pool->p.max_len); 8bf4d7154d4c0d Alexander Lobakin 2024-05-07 409 __dma_sync_single_for_device(pool->p.dev, dma_addr + pool->p.offset, 8bf4d7154d4c0d Alexander Lobakin 2024-05-07 410 dma_sync_size, pool->p.dma_dir); 8bf4d7154d4c0d Alexander Lobakin 2024-05-07 411 #endif 8bf4d7154d4c0d Alexander Lobakin 2024-05-07 412 } 8bf4d7154d4c0d Alexander Lobakin 2024-05-07 413 :::::: The code at line 406 was first introduced by commit :::::: 9ddb3c14afba8bc5950ed297f02d4ae05ff35cd1 mm: fix struct page layout on 32-bit systems :::::: TO: Matthew Wilcox (Oracle) :::::: CC: Linus Torvalds -- 0-DAY CI Kernel Test Service https://github.com/intel/lkp-tests/wiki