diff options
| author | Mario Limonciello <mario.limonciello@amd.com> | 2022-02-25 13:06:45 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-04-15 14:18:41 +0200 |
| commit | 60b6aae072494917807be8366a013a7bc3a18d7b (patch) | |
| tree | b4ab3851cc0c0eccd049a3a4304759b841d989aa /arch/arm64 | |
| parent | 598a22a077a8edb95a4cf45ba64bcc5ab7c2e01f (diff) | |
cpuidle: PSCI: Move the `has_lpi` check to the beginning of the function
commit 01f6c7338ce267959975da65d86ba34f44d54220 upstream.
Currently the first thing checked is whether the PCSI cpu_suspend function
has been initialized.
Another change will be overloading `acpi_processor_ffh_lpi_probe` and
calling it sooner. So make the `has_lpi` check the first thing checked
to prepare for that change.
Reviewed-by: Sudeep Holla <sudeep.holla@arm.com>
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kernel/cpuidle.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/arm64/kernel/cpuidle.c b/arch/arm64/kernel/cpuidle.c index e4d6af2fdec7..5397f0d9e5bb 100644 --- a/arch/arm64/kernel/cpuidle.c +++ b/arch/arm64/kernel/cpuidle.c @@ -53,6 +53,9 @@ static int psci_acpi_cpu_init_idle(unsigned int cpu) struct acpi_lpi_state *lpi; struct acpi_processor *pr = per_cpu(processors, cpu); + if (unlikely(!pr || !pr->flags.has_lpi)) + return -EINVAL; + /* * If the PSCI cpu_suspend function hook has not been initialized * idle states must not be enabled, so bail out @@ -60,9 +63,6 @@ static int psci_acpi_cpu_init_idle(unsigned int cpu) if (!psci_ops.cpu_suspend) return -EOPNOTSUPP; - if (unlikely(!pr || !pr->flags.has_lpi)) - return -EINVAL; - count = pr->power.count - 1; if (count <= 0) return -ENODEV; |