Re: [PATCH 2/3] accel/qaic: Add fifo size debugfs

[kernel test robot <lkp@xxxxxxxxx>]

Hi Jeffrey,

kernel test robot noticed the following build warnings:

[auto build test WARNING on drm-misc/drm-misc-next]
[also build test WARNING on next-20240312]
[cannot apply to linus/master v6.8]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch#_base_tree_information]

url:    https://github.com/intel-lab-lkp/linux/commits/Jeffrey-Hugo/accel-qaic-Add-bootlog-debugfs/20240312-010045
base:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next
patch link:    https://lore.kernel.org/r/20240311165826.1728693-3-quic_jhugo%40quicinc.com
patch subject: [PATCH 2/3] accel/qaic: Add fifo size debugfs
config: microblaze-allmodconfig (https://download.01.org/0day-ci/archive/20240312/202403121628.x2PPKBRx-lkp@xxxxxxxxx/config)
compiler: microblaze-linux-gcc (GCC) 13.2.0
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20240312/202403121628.x2PPKBRx-lkp@xxxxxxxxx/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@xxxxxxxxx>
| Closes: https://lore.kernel.org/oe-kbuild-all/202403121628.x2PPKBRx-lkp@xxxxxxxxx/

All warnings (new ones prefixed by >>):

   drivers/accel/qaic/qaic_debugfs.c: In function 'qaic_debugfs_init':
>> drivers/accel/qaic/qaic_debugfs.c:112:55: warning: '%03u' directive output may be truncated writing between 3 and 10 bytes into a region of size 6 [-Wformat-truncation=]
     112 |                 snprintf(name, QAIC_DBC_DIR_NAME, "dbc%03u", i);
         |                                                       ^~~~
   drivers/accel/qaic/qaic_debugfs.c:112:51: note: directive argument in the range [0, 4294967294]
     112 |                 snprintf(name, QAIC_DBC_DIR_NAME, "dbc%03u", i);
         |                                                   ^~~~~~~~~
   drivers/accel/qaic/qaic_debugfs.c:112:17: note: 'snprintf' output between 7 and 14 bytes into a destination of size 9
     112 |                 snprintf(name, QAIC_DBC_DIR_NAME, "dbc%03u", i);
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +112 drivers/accel/qaic/qaic_debugfs.c

    99	
   100	void qaic_debugfs_init(struct qaic_drm_device *qddev)
   101	{
   102		struct qaic_device *qdev = qddev->qdev;
   103		struct dentry *debugfs_root;
   104		struct dentry *debugfs_dir;
   105		char name[QAIC_DBC_DIR_NAME];
   106		u32 i;
   107	
   108		debugfs_root = to_drm(qddev)->debugfs_root;
   109	
   110		debugfs_create_file("bootlog", 0400, debugfs_root, qdev, &bootlog_fops);
   111		for (i = 0; i < qdev->num_dbc; ++i) {
 > 112			snprintf(name, QAIC_DBC_DIR_NAME, "dbc%03u", i);
   113			debugfs_dir = debugfs_create_dir(name, debugfs_root);
   114			debugfs_create_file("fifo_size", 0400, debugfs_dir, &qdev->dbc[i], &fifo_size_fops);
   115		}
   116	}
   117	

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