[zen:7.2/zen-sauce 4/26] drivers/firmware/cirrus/cs_dsp.c:491:17: warning: '%s' directive argument is null

[kernel test robot <lkp@intel.com>]

tree:   https://github.com/zen-kernel/zen-kernel 7.2/zen-sauce
head:   299e73098bef8870b60c6ce830084457d222b0f5
commit: 4552ae443b368caad94ec1a5dfb1e92047dc62a6 [4/26] ZEN: Restore CONFIG_OPTIMIZE_FOR_PERFORMANCE_O3
config: m68k-randconfig-r112-20260829 (https://download.01.org/0day-ci/archive/20260830/202608301541.XDEvwalU-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 11.5.0
sparse: v0.6.5-rc1
reproduce (this is a W=1 build): (https://download.01.org/0day-ci/archive/20260830/202608301541.XDEvwalU-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/202608301541.XDEvwalU-lkp@intel.com/

All warnings (new ones prefixed by >>):

   drivers/firmware/cirrus/cs_dsp.c: In function 'cs_dsp_debugfs_read_controls_show':
>> drivers/firmware/cirrus/cs_dsp.c:491:17: warning: '%s' directive argument is null [-Wformat-overflow=]
     491 |                 seq_printf(s, "%22.*s: %#8x %s:%08x %#8x %s %#8x %#4x %c%c%c%c %s %s\n",
         |                 ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     492 |                            ctl->subname_len, ctl->subname, ctl->len,
         |                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     493 |                            cs_dsp_mem_region_name(ctl->alg_region.type),
         |                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     494 |                            ctl->offset, reg, ctl->fw_name, ctl->alg_region.alg, ctl->type,
         |                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     495 |                            ctl->flags & WMFW_CTL_FLAG_VOLATILE ? 'V' : '-',
         |                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     496 |                            ctl->flags & WMFW_CTL_FLAG_SYS ? 'S' : '-',
         |                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     497 |                            ctl->flags & WMFW_CTL_FLAG_READABLE ? 'R' : '-',
         |                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     498 |                            ctl->flags & WMFW_CTL_FLAG_WRITEABLE ? 'W' : '-',
         |                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     499 |                            ctl->enabled ? "enabled" : "disabled",
         |                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
     500 |                            ctl->set ? "dirty" : "clean");
         |                            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~


vim +491 drivers/firmware/cirrus/cs_dsp.c

f6bc909e7673c30 Simon Trimmer      2021-09-13  477  
7a3f924cee4bdfe Simon Trimmer      2023-03-28  478  static int cs_dsp_coeff_base_reg(struct cs_dsp_coeff_ctl *ctl, unsigned int *reg,
7a3f924cee4bdfe Simon Trimmer      2023-03-28  479  				 unsigned int off);
7a3f924cee4bdfe Simon Trimmer      2023-03-28  480  
7a3f924cee4bdfe Simon Trimmer      2023-03-28  481  static int cs_dsp_debugfs_read_controls_show(struct seq_file *s, void *ignored)
7a3f924cee4bdfe Simon Trimmer      2023-03-28  482  {
7a3f924cee4bdfe Simon Trimmer      2023-03-28  483  	struct cs_dsp *dsp = s->private;
7a3f924cee4bdfe Simon Trimmer      2023-03-28  484  	struct cs_dsp_coeff_ctl *ctl;
7a3f924cee4bdfe Simon Trimmer      2023-03-28  485  	unsigned int reg;
7a3f924cee4bdfe Simon Trimmer      2023-03-28  486  
ed6e90cb9fe53ab Richard Fitzgerald 2025-11-27  487  	guard(mutex)(&dsp->pwr_lock);
ed6e90cb9fe53ab Richard Fitzgerald 2025-11-27  488  
7a3f924cee4bdfe Simon Trimmer      2023-03-28  489  	list_for_each_entry(ctl, &dsp->ctl_list, list) {
7a3f924cee4bdfe Simon Trimmer      2023-03-28  490  		cs_dsp_coeff_base_reg(ctl, &reg, 0);
7584edf15892e29 Richard Fitzgerald 2025-11-24 @491  		seq_printf(s, "%22.*s: %#8x %s:%08x %#8x %s %#8x %#4x %c%c%c%c %s %s\n",
7a3f924cee4bdfe Simon Trimmer      2023-03-28  492  			   ctl->subname_len, ctl->subname, ctl->len,
7a3f924cee4bdfe Simon Trimmer      2023-03-28  493  			   cs_dsp_mem_region_name(ctl->alg_region.type),
7a3f924cee4bdfe Simon Trimmer      2023-03-28  494  			   ctl->offset, reg, ctl->fw_name, ctl->alg_region.alg, ctl->type,
7a3f924cee4bdfe Simon Trimmer      2023-03-28  495  			   ctl->flags & WMFW_CTL_FLAG_VOLATILE ? 'V' : '-',
7a3f924cee4bdfe Simon Trimmer      2023-03-28  496  			   ctl->flags & WMFW_CTL_FLAG_SYS ? 'S' : '-',
7a3f924cee4bdfe Simon Trimmer      2023-03-28  497  			   ctl->flags & WMFW_CTL_FLAG_READABLE ? 'R' : '-',
7a3f924cee4bdfe Simon Trimmer      2023-03-28  498  			   ctl->flags & WMFW_CTL_FLAG_WRITEABLE ? 'W' : '-',
7a3f924cee4bdfe Simon Trimmer      2023-03-28  499  			   ctl->enabled ? "enabled" : "disabled",
7a3f924cee4bdfe Simon Trimmer      2023-03-28  500  			   ctl->set ? "dirty" : "clean");
7a3f924cee4bdfe Simon Trimmer      2023-03-28  501  	}
7a3f924cee4bdfe Simon Trimmer      2023-03-28  502  
7a3f924cee4bdfe Simon Trimmer      2023-03-28  503  	return 0;
7a3f924cee4bdfe Simon Trimmer      2023-03-28  504  }
7a3f924cee4bdfe Simon Trimmer      2023-03-28  505  DEFINE_SHOW_ATTRIBUTE(cs_dsp_debugfs_read_controls);
7a3f924cee4bdfe Simon Trimmer      2023-03-28  506  

:::::: The code at line 491 was first introduced by commit
:::::: 7584edf15892e29190b2145294cc1680aa142586 firmware: cs_dsp: Store control length as 32-bit

:::::: TO: Richard Fitzgerald <rf@opensource.cirrus.com>
:::::: CC: Mark Brown <broonie@kernel.org>

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