linux-kernel - [PATCH] clocksource: use clocksource

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Date:	Wed, 16 Mar 2016 16:21:15 +0600
From:	Alexander Kuleshov <kuleshovmail@...il.com>
To:	John Stultz <john.stultz@...aro.org>,
	Thomas Gleixner <tglx@...utronix.de>
Cc:	linux-kernel@...r.kernel.org,
	Alexander Kuleshov <kuleshovmail@...il.com>
Subject: [PATCH] clocksource: use clocksource_freq2mult() helper

which is introduced in the 7aca0c072 commit to simplify calculation of
the mult and shift in the clocks_calc_mult_shift().

Signed-off-by: Alexander Kuleshov <kuleshovmail@...il.com>
---
 kernel/time/clocksource.c | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/kernel/time/clocksource.c b/kernel/time/clocksource.c
index 56ece14..de57923 100644
--- a/kernel/time/clocksource.c
+++ b/kernel/time/clocksource.c
@@ -80,9 +80,7 @@ clocks_calc_mult_shift(u32 *mult, u32 *shift, u32 from, u32 to, u32 maxsec)
 	 * accuracy and fits the maxsec conversion range:
 	 */
 	for (sft = 32; sft > 0; sft--) {
-		tmp = (u64) to << sft;
-		tmp += from / 2;
-		do_div(tmp, from);
+		tmp = clocksource_freq2mult(from, sft, to);
 		if ((tmp >> sftacc) == 0)
 			break;
 	}
-- 
2.8.0.rc2.216.g1477fb2.dirty