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 <yamad...@jp.panasonic.com>
---
Changes in v3: None
Changes in v2: None
arch/arm/cpu/arm926ejs/mxs/spl_power_init.c | 3 ++-
arch/arm/cpu/armv7/omap-common/abb.c | 6 +++---
drivers/misc/mxc_ocotp.c | 4 ++--
lib/strmhz.c | 4 ++--
4 files changed, 9 insertions(+), 8 deletions(-)
diff --git a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
index d25019a..1c54ab7 100644
--- a/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
+++ b/arch/arm/cpu/arm926ejs/mxs/spl_power_init.c
@@ -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;
diff --git a/arch/arm/cpu/armv7/omap-common/abb.c
b/arch/arm/cpu/armv7/omap-common/abb.c
index 423aeb9..a0add66 100644
--- a/arch/arm/cpu/armv7/omap-common/abb.c
+++ b/arch/arm/cpu/armv7/omap-common/abb.c
@@ -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));
diff --git a/drivers/misc/mxc_ocotp.c b/drivers/misc/mxc_ocotp.c
index 3de1245..89737af 100644
--- a/drivers/misc/mxc_ocotp.c
+++ b/drivers/misc/mxc_ocotp.c
@@ -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) |
diff --git a/lib/strmhz.c b/lib/strmhz.c
index f9a1772..5c16cc4 100644
--- a/lib/strmhz.c
+++ b/lib/strmhz.c
@@ -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);
--
1.9.1
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