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ARM: tegra: cpuidle: Remove unnecessary memory barrier

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There is no good justification for smp_rmb() after returning from LP2
because there are no memory operations that require SMP synchronization.
Thus remove the confusing barrier.

Acked-by: Peter De Schrijver <pdeschrijver@nvidia.com>
Tested-by: Peter Geis <pgwipeout@gmail.com>
Tested-by: Jasper Korten <jja2000@gmail.com>
Tested-by: David Heidelberg <david@ixit.cz>
Tested-by: Nicolas Chauvet <kwizart@gmail.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Dmitry Osipenko 2020-02-25 01:40:51 +03:00 committed by Thierry Reding
parent f0c69bdfb0
commit 650a941c34
2 changed files with 0 additions and 4 deletions
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2
arch/arm/mach-tegra/cpuidle-tegra20.c
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@ -197,8 +197,6 @@ static int tegra20_idle_lp2_coupled(struct cpuidle_device *dev,
local_fiq_enable();
smp_rmb();
return entered_lp2 ? index : 0;
}
#endif

2
arch/arm/mach-tegra/cpuidle-tegra30.c
View file

@ -113,8 +113,6 @@ static int tegra30_idle_lp2(struct cpuidle_device *dev,
local_fiq_enable();
smp_rmb();
return (entered_lp2) ? index : 0;
}
#endif