[android-common:android15-6.6 1/1] drivers/dma-buf/dma-buf.c:363: warning: Function parameter or member 'name' not described in 'dma_buf_set_name'

[android-common:android15-6.6 1/1] drivers/dma-buf/dma-buf.c:363: warning: Function parameter or member 'name' not described in 'dma_buf_set_name'

[kernel test robot]

tree:   https://android.googlesource.com/kernel/common android15-6.6
head:   36e33448be90aea3d2e98da271b35aac511b8dc6
commit: 05811b07b50aa107b805735f20c9029b40e9a7d9 [1/1] ANDROID: dma-buf: support users to change dma_buf.name
config: x86_64-randconfig-002-20260325 (https://download.01.org/0day-ci/archive/20260325/202603251337.2IY8IHC5-lkp@intel.com/config)
compiler: gcc-14 (Debian 14.2.0-19) 14.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260325/202603251337.2IY8IHC5-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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202603251337.2IY8IHC5-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/dma-buf/dma-buf.c:363: warning: Function parameter or member 'name' not described in 'dma_buf_set_name'
   drivers/dma-buf/dma-buf.c:363: warning: Excess function parameter 'buf' description in 'dma_buf_set_name'


vim +363 drivers/dma-buf/dma-buf.c

   348	
   349	/**
   350	 * dma_buf_set_name - Set a name to a specific dma_buf to track the usage.
   351	 * It could support changing the name of the dma-buf if the same
   352	 * piece of memory is used for multiple purpose between different devices.
   353	 *
   354	 * @dmabuf: [in]     dmabuf buffer that will be renamed.
   355	 * @buf:    [in]     A piece of userspace memory that contains the name of
   356	 *                   the dma-buf.
   357	 *
   358	 * Returns 0 on success. If the dma-buf buffer is already attached to
   359	 * devices, return -EBUSY.
   360	 *
   361	 */
   362	long dma_buf_set_name(struct dma_buf *dmabuf, const char *name)
 > 363	{
   364		char *buf = kstrndup(name, DMA_BUF_NAME_LEN, GFP_KERNEL);
   365		if (!buf)
   366			return -ENOMEM;
   367	
   368		_dma_buf_set_name(dmabuf, buf);
   369	
   370		return 0;
   371	}
   372	EXPORT_SYMBOL_GPL(dma_buf_set_name);
   373	

-- 
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki

[android-common:android15-6.6 1/1] drivers/dma-buf/dma-buf.c:363: warning: Function parameter or member 'name' not described in 'dma_buf_set_name'

[kernel test robot]

Hi Guangming,

FYI, the error/warning still remains.

tree:   https://android.googlesource.com/kernel/common android15-6.6
head:   60cf931c5a95dacbbd86483d5d0978e80a756ccd
commit: 05811b07b50aa107b805735f20c9029b40e9a7d9 [1/1] ANDROID: dma-buf: support users to change dma_buf.name
config: arm-randconfig-1001-20261020 (https://download.01.org/0day-ci/archive/20261024/202610242048.rON5p0DA-lkp@intel.com/config)
compiler: clang version 20.1.8 (https://github.com/llvm/llvm-project 87f0227cb60147a26a1eeb4fb06e3b505e9c7261)
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20261024/202610242048.rON5p0DA-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 <lkp@intel.com>
| Closes: https://lore.kernel.org/oe-kbuild-all/202610242048.rON5p0DA-lkp@intel.com/

All warnings (new ones prefixed by >>):

>> drivers/dma-buf/dma-buf.c:363: warning: Function parameter or member 'name' not described in 'dma_buf_set_name'
   drivers/dma-buf/dma-buf.c:363: warning: Excess function parameter 'buf' description in 'dma_buf_set_name'


vim +363 drivers/dma-buf/dma-buf.c

   348	
   349	/**
   350	 * dma_buf_set_name - Set a name to a specific dma_buf to track the usage.
   351	 * It could support changing the name of the dma-buf if the same
   352	 * piece of memory is used for multiple purpose between different devices.
   353	 *
   354	 * @dmabuf: [in]     dmabuf buffer that will be renamed.
   355	 * @buf:    [in]     A piece of userspace memory that contains the name of
   356	 *                   the dma-buf.
   357	 *
   358	 * Returns 0 on success. If the dma-buf buffer is already attached to
   359	 * devices, return -EBUSY.
   360	 *
   361	 */
   362	long dma_buf_set_name(struct dma_buf *dmabuf, const char *name)
 > 363	{
   364		char *buf = kstrndup(name, DMA_BUF_NAME_LEN, GFP_KERNEL);
   365		if (!buf)
   366			return -ENOMEM;
   367	
   368		_dma_buf_set_name(dmabuf, buf);
   369	
   370		return 0;
   371	}
   372	EXPORT_SYMBOL_GPL(dma_buf_set_name);
   373	

--
0-DAY CI Kernel Test Service
https://github.com/intel/lkp-tests/wiki