tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git master
head: b2dfdab2f61ed5eb57317136d6efbb973f79210e
commit: f8e5b425f5eea40759a0ccc17caa7f4d660d0d4a [6753/6952] hwmon: (w83795) use find_closest_descending() in pwm_freq_to_reg()
reproduce:
# apt-get install sparse
git checkout f8e5b425f5eea40759a0ccc17caa7f4d660d0d4a
make ARCH=x86_64 allmodconfig
make C=1 CF=-D__CHECK_ENDIAN__
sparse warnings: (new ones prefixed by >>)
>> drivers/hwmon/w83795.c:312:16: sparse: incorrect type in initializer (different modifiers)
drivers/hwmon/w83795.c:312:16: expected unsigned short *__fc_a
drivers/hwmon/w83795.c:312:16: got unsigned short static const [toplevel] *<noident>
vim +312 drivers/hwmon/w83795.c
296 unsigned long base_clock;
297
298 if (reg & 0x80) {
299 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
300 return base_clock / ((reg & 0x7f) + 1);
301 } else
302 return pwm_freq_cksel0[reg & 0x0f];
303 }
304
305 static u8 pwm_freq_to_reg(unsigned long val, u16 clkin)
306 {
307 unsigned long base_clock;
308 u8 reg0, reg1;
309 unsigned long best0, best1;
310
311 /* Best fit for cksel = 0 */
> 312 reg0 = find_closest_descending(val, pwm_freq_cksel0,
313 ARRAY_SIZE(pwm_freq_cksel0));
314 if (val < 375) /* cksel = 1 can't beat this */
315 return reg0;
316 best0 = pwm_freq_cksel0[reg0];
317
318 /* Best fit for cksel = 1 */
319 base_clock = clkin * 1000 / ((clkin == 48000) ? 384 : 256);
320 reg1 = clamp_val(DIV_ROUND_CLOSEST(base_clock, val), 1, 128);
---
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