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| author | Dmitry Osipenko <digetx@gmail.com> | 2020-02-25 01:40:45 +0300 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2020-03-12 12:54:05 +0300 |
| commit | 891e1286c138eafb26d1f36eee3f31b8cd2c2bd9 (patch) | |
| tree | b64239faed7373f54c4de088a0a630e0f98916e9 /arch/arm/mach-tegra/cpuidle-tegra20.c | |
| parent | f5619492c80ba021e267de245bb78b485d1802c5 (diff) | |
| download | linux-891e1286c138eafb26d1f36eee3f31b8cd2c2bd9.tar.xz | |
ARM: tegra: Propagate error from tegra_idle_lp2_last()
Technically cpu_suspend() may fail and it's never good to lose information
about failure. For example things like cpuidle core could correctly sample
idling time in the case of failure.
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>
Diffstat (limited to 'arch/arm/mach-tegra/cpuidle-tegra20.c')
| -rw-r--r-- | arch/arm/mach-tegra/cpuidle-tegra20.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/arm/mach-tegra/cpuidle-tegra20.c b/arch/arm/mach-tegra/cpuidle-tegra20.c index 78c20025dcfe..b3087ece9421 100644 --- a/arch/arm/mach-tegra/cpuidle-tegra20.c +++ b/arch/arm/mach-tegra/cpuidle-tegra20.c @@ -86,15 +86,17 @@ static bool tegra20_cpu_cluster_power_down(struct cpuidle_device *dev, struct cpuidle_driver *drv, int index) { + bool ret; + while (!tegra_cpu_rail_off_ready()) cpu_relax(); - tegra_idle_lp2_last(); + ret = !tegra_idle_lp2_last(); if (cpu_online(1)) tegra20_wake_cpu1_from_reset(); - return true; + return ret; } #ifdef CONFIG_SMP |