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authorMark Rutland <mark.rutland@arm.com>2015-04-22 16:22:55 +0100
committerMark Rutland <mark.rutland@arm.com>2015-05-27 13:21:46 +0100
commit2a7cd0ebfc0a5ac2e692e63871e0ff6a50d5de46 (patch)
tree4d8bdba71b645c4163af8b229e7ac94a3068c4e3 /arch/arm64/kernel/psci.c
parent6b99c68cb5dd274d79451e5135f9450f7c01ca52 (diff)
arm64: psci: remove unnecessary id indirection
PSCI 0.1 did not define canonical IDs for CPU_ON, CPU_OFF, CPU_SUSPEND, or MIGRATE, and so these need to be provided when using firmware compliant to PSCI 0.1. However, functions introduced in 0.2 or later have canonical IDs, and these cannot be provided via DT. There's no need to indirect the IDs via a table; they can be used directly at callsites (and already are for SYSTEM_OFF and SYSTEM_RESET). This patch removes the unnecessary function ID indirection for AFFINITY_INFO and MIGRATE_INFO_TYPE. Signed-off-by: Mark Rutland <mark.rutland@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Acked-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org> Tested-by: Hanjun Guo <hanjun.guo@linaro.org> Cc: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/psci.c')
-rw-r--r--arch/arm64/kernel/psci.c20
1 files changed, 3 insertions, 17 deletions
diff --git a/arch/arm64/kernel/psci.c b/arch/arm64/kernel/psci.c
index 17e717c4b1ef..0c1efb662a71 100644
--- a/arch/arm64/kernel/psci.c
+++ b/arch/arm64/kernel/psci.c
@@ -67,8 +67,6 @@ enum psci_function {
PSCI_FN_CPU_ON,
PSCI_FN_CPU_OFF,
PSCI_FN_MIGRATE,
- PSCI_FN_AFFINITY_INFO,
- PSCI_FN_MIGRATE_INFO_TYPE,
PSCI_FN_MAX,
};
@@ -168,22 +166,13 @@ static int psci_migrate(unsigned long cpuid)
static int psci_affinity_info(unsigned long target_affinity,
unsigned long lowest_affinity_level)
{
- int err;
- u32 fn;
-
- fn = psci_function_id[PSCI_FN_AFFINITY_INFO];
- err = invoke_psci_fn(fn, target_affinity, lowest_affinity_level, 0);
- return err;
+ return invoke_psci_fn(PSCI_0_2_FN64_AFFINITY_INFO, target_affinity,
+ lowest_affinity_level, 0);
}
static int psci_migrate_info_type(void)
{
- int err;
- u32 fn;
-
- fn = psci_function_id[PSCI_FN_MIGRATE_INFO_TYPE];
- err = invoke_psci_fn(fn, 0, 0, 0);
- return err;
+ return invoke_psci_fn(PSCI_0_2_FN_MIGRATE_INFO_TYPE, 0, 0, 0);
}
static int __maybe_unused cpu_psci_cpu_init_idle(unsigned int cpu)
@@ -293,11 +282,8 @@ static void __init psci_0_2_set_functions(void)
psci_function_id[PSCI_FN_MIGRATE] = PSCI_0_2_FN64_MIGRATE;
psci_ops.migrate = psci_migrate;
- psci_function_id[PSCI_FN_AFFINITY_INFO] = PSCI_0_2_FN64_AFFINITY_INFO;
psci_ops.affinity_info = psci_affinity_info;
- psci_function_id[PSCI_FN_MIGRATE_INFO_TYPE] =
- PSCI_0_2_FN_MIGRATE_INFO_TYPE;
psci_ops.migrate_info_type = psci_migrate_info_type;
arm_pm_restart = psci_sys_reset;