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replace DIV_ROUND with DIV_ROUND_CLOSEST 

The Linux-compatible macro DIV_ROUND_CLOSEST is a bit more flexible
and safer than DIV_ROUND.

For example,
  foo = DIV_ROUND_CLOSEST(x, y++)
works expectedly, but
  foo = DIV_ROUND(x, y++)
does not. (y is incremented twice.)

Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com>
utp
Masahiro Yamada 2014-11-07 03:03:26 +09:00 committed by Tom Rini
parent 3fd968e931
commit 4515992fc7
4 changed files with 9 additions and 8 deletions
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3
arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
View File

@ -1002,7 +1002,8 @@ static void mxs_power_set_vddx(const struct mxs_vddx_cfg *cfg,
uint32_t powered_by_linreg = 0;
int adjust_up, tmp;
new_brownout = DIV_ROUND(new_target - new_brownout, cfg->step_mV);
new_brownout = DIV_ROUND_CLOSEST(new_target - new_brownout,
cfg->step_mV);
cur_target = readl(cfg->reg);
cur_target &= cfg->trg_mask;

6
arch/arm/cpu/armv7/omap-common/abb.c
View File

@ -48,9 +48,9 @@ static void abb_setup_timings(u32 setup)
*/
/* calculate SR2_WTCNT_VALUE */
sys_rate = DIV_ROUND(V_OSCK, 1000000);
clk_cycles = DIV_ROUND(OMAP_ABB_CLOCK_CYCLES * 10, sys_rate);
sr2_cnt = DIV_ROUND(OMAP_ABB_SETTLING_TIME * 10, clk_cycles);
sys_rate = DIV_ROUND_CLOSEST(V_OSCK, 1000000);
clk_cycles = DIV_ROUND_CLOSEST(OMAP_ABB_CLOCK_CYCLES * 10, sys_rate);
sr2_cnt = DIV_ROUND_CLOSEST(OMAP_ABB_SETTLING_TIME * 10, clk_cycles);
setbits_le32(setup,
sr2_cnt << (ffs(OMAP_ABB_SETUP_SR2_WTCNT_VALUE_MASK) - 1));

4
drivers/misc/mxc_ocotp.c
View File

@ -122,8 +122,8 @@ static void set_timing(struct ocotp_regs *regs)
relax = DIV_ROUND_UP(ipg_clk * BV_TIMING_RELAX_NS, 1000000000) - 1;
strobe_read = DIV_ROUND_UP(ipg_clk * BV_TIMING_STROBE_READ_NS,
1000000000) + 2 * (relax + 1) - 1;
strobe_prog = DIV_ROUND(ipg_clk * BV_TIMING_STROBE_PROG_US, 1000000) +
2 * (relax + 1) - 1;
strobe_prog = DIV_ROUND_CLOSEST(ipg_clk * BV_TIMING_STROBE_PROG_US,
1000000) + 2 * (relax + 1) - 1;
timing = BF(strobe_read, TIMING_STROBE_READ) |
BF(relax, TIMING_RELAX) |

4
lib/strmhz.c
View File

@ -11,11 +11,11 @@ char *strmhz (char *buf, unsigned long hz)
long l, n;
long m;
n = DIV_ROUND(hz, 1000) / 1000L;
n = DIV_ROUND_CLOSEST(hz, 1000) / 1000L;
l = sprintf (buf, "%ld", n);
hz -= n * 1000000L;
m = DIV_ROUND(hz, 1000L);
m = DIV_ROUND_CLOSEST(hz, 1000L);
if (m != 0)
sprintf (buf + l, ".%03ld", m);
return (buf);