[broonie-ci:asoc-7.3 56/63] sound/soc/codecs/es8389.c:109 find_best_hpf_freq() warn: unsigned 'target_hz' is never less than zero.

[broonie-ci:asoc-7.3 56/63] sound/soc/codecs/es8389.c:109 find_best_hpf_freq() warn: unsigned 'target_hz' is never less than zero.

[kernel test robot]

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/ci.git asoc-7.3
head:   fb5d1b1c5f8a920ee697545fa6dee16825085717
commit: 87592da1a490abd2adeb57a49fb200d058403cc5 [56/63] ASoC: codecs: ES8389: Add private members about HPF
config: m68k-randconfig-r072-20260702 (https://download.01.org/0day-ci/archive/20260702/202607021153.zU3zkE2I-lkp@intel.com/config)
compiler: m68k-linux-gcc (GCC) 14.3.0
smatch: v0.5.0-9185-gbcc58b9c

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/202607021153.zU3zkE2I-lkp@intel.com/

smatch warnings:
sound/soc/codecs/es8389.c:109 find_best_hpf_freq() warn: unsigned 'target_hz' is never less than zero.

vim +/target_hz +109 sound/soc/codecs/es8389.c

   101	
   102	static bool find_best_hpf_freq(u32 target_hz, u8 *hpf1, u8 *hpf2, u32 *out)
   103	{
   104		int best_row = -1, best_col = -1;
   105		u32 min_diff = U32_MAX;
   106		u32 f, diff;
   107		int i, j;
   108	
 > 109		if ((target_hz > 1020) | (target_hz < 0))
   110			return false;
   111	
   112		for (i = 0; i < 10; i++) {
   113			for (j = i; j < 10; j++) {
   114				f = hpf_table[i][j];
   115	
   116				diff = (target_hz > f) ? (target_hz - f) : (f - target_hz);
   117				if (diff < min_diff) {
   118					min_diff = diff;
   119					best_row = i;
   120					best_col = j;
   121					*out = f;
   122				}
   123			}
   124		}
   125	
   126		*hpf1 = best_col + ES8389_HPF_OFFSET;
   127		*hpf2 = best_row + ES8389_HPF_OFFSET;
   128	
   129		return true;
   130	}
   131	

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