Hi Huan,

kernel test robot noticed the following build warnings:

[auto build test WARNING on 931a3b3bccc96e7708c82b30b2b5fa82dfd04890]

url: https://github.com/intel-lab-lkp/linux/commits/Huan-Yang/dma-buf-heaps-Intro... base: 931a3b3bccc96e7708c82b30b2b5fa82dfd04890 patch link: https://lore.kernel.org/r/20240730075755.10941-4-link%40vivo.com patch subject: [PATCH v2 3/5] dma-buf: heaps: support alloc async read file config: xtensa-allyesconfig (https://download.01.org/0day-ci/archive/20240731/202407312202.LhLTLEhX-lkp@i...) compiler: xtensa-linux-gcc (GCC) 14.1.0 reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240731/202407312202.LhLTLEhX-lkp@i...)

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 lkp@intel.com | Closes: https://lore.kernel.org/oe-kbuild-all/202407312202.LhLTLEhX-lkp@intel.com/

All warnings (new ones prefixed by >>):

drivers/dma-buf/dma-heap.c:45: warning: Function parameter or struct member 'priv' not described in 'dma_heap' drivers/dma-buf/dma-heap.c:45: warning: Function parameter or struct member 'heap_devt' not described in 'dma_heap' drivers/dma-buf/dma-heap.c:45: warning: Function parameter or struct member 'list' not described in 'dma_heap' drivers/dma-buf/dma-heap.c:45: warning: Function parameter or struct member 'heap_cdev' not described in 'dma_heap'

...

drivers/dma-buf/dma-heap.c:158: warning: Function parameter or struct member 'lock' not described in 'dma_heap_file_control'

drivers/dma-buf/dma-heap.c:482: warning: expecting prototype for Trigger sync file read, read into dma(). Prototype was for dma_heap_read_file_sync() instead

vim +158 drivers/dma-buf/dma-heap.c

133 134 /** 135 * struct dma_heap_file_control - global control of dma_heap file read. 136 * @works: @dma_heap_file_work's list head. 137 * 138 * @threadwq: wait queue for @work_thread, if commit work, @work_thread 139 * wakeup and read this work's file contains. 140 * 141 * @workwq: used for main thread wait for file read end, if allocation 142 * end before file read. @dma_heap_file_task ref effect this. 143 * 144 * @work_thread: file read kthread. the dma_heap_file_task work's consumer. 145 * 146 * @heap_fwork_cachep: @dma_heap_file_work's cachep, it's alloc/free frequently. 147 * 148 * @nr_work: global number of how many work committed. 149 */ 150 struct dma_heap_file_control { 151 struct list_head works; 152 spinlock_t lock; // only lock for @works. 153 wait_queue_head_t threadwq; 154 wait_queue_head_t workwq; 155 struct task_struct *work_thread; 156 struct kmem_cache *heap_fwork_cachep; 157 atomic_t nr_work;

158 };

159