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(parent: 5825614) | patch
clk: renesas: rcar-gen2: Improve arithmetic divisions
authorGeert Uytterhoeven <geert+renesas@glider.be>
Fri, 30 Aug 2019 13:45:08 +0000 (15:45 +0200)
committerGeert Uytterhoeven <geert+renesas@glider.be>
Tue, 1 Oct 2019 08:24:43 +0000 (10:24 +0200)
commit3e8c1d4cce6b679f4cfd81dfdbbf727f06986aa5
treea60cba39dd1574590fe9c554e118811ed3b87048tree | snapshot
parent58256143cff7c2e0a72fe609e797a36b26a3c381commit | diff
clk: renesas: rcar-gen2: Improve arithmetic divisions

- Use div64_ul() instead of div_u64() if the divisor is unsigned long,
    to avoid truncation to 32-bit on 64-bit platforms,
  - Prefer ULL constant suffixes over casts to u64,
  - Prioritize multiplication over division, to increase accuracy.

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Link: https://lore.kernel.org/r/20190830134515.11925-2-geert+renesas@glider.be
drivers/clk/renesas/rcar-gen2-cpg.c diff | blob | history
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