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authorMarek Szyprowski <m.szyprowski@samsung.com>2018-03-21 12:46:39 +0300
committerKrzysztof Kozlowski <krzk@kernel.org>2018-03-21 20:51:39 +0300
commitae35c4835699933335e76ab2d6a245303592ceea (patch)
tree336d2f17c150d16130defc8d56c397ba9eb95a27 /arch/arm/mach-exynos/pm.c
parenta7480dbcf983c31d8111f864c848e8a75116a87d (diff)
downloadlinux-ae35c4835699933335e76ab2d6a245303592ceea.tar.xz
ARM: EXYNOS: Simplify code in coupled CPU idle hot path
exynos_enter_aftr() is called by coupled CPU idle code every time CPU enters idle state, what can be considered as a hot path. Replace of_machine_is_compatible() call with a simple SoC revision check. of_machine_is_compatible() function performs a dozen of string comparisons during the full device tree walk, while soc_is_exynos4412() is a simple integer check on SoC revision variable. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Acked-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Diffstat (limited to 'arch/arm/mach-exynos/pm.c')
-rw-r--r--arch/arm/mach-exynos/pm.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mach-exynos/pm.c b/arch/arm/mach-exynos/pm.c
index a1055a2b8d54..a822c5073715 100644
--- a/arch/arm/mach-exynos/pm.c
+++ b/arch/arm/mach-exynos/pm.c
@@ -163,7 +163,7 @@ void exynos_enter_aftr(void)
exynos_pm_central_suspend();
- if (of_machine_is_compatible("samsung,exynos4412")) {
+ if (soc_is_exynos4412()) {
/* Setting SEQ_OPTION register */
pmu_raw_writel(S5P_USE_STANDBY_WFI0 | S5P_USE_STANDBY_WFE0,
S5P_CENTRAL_SEQ_OPTION);