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authorHanjun Guo <hanjun.guo@linaro.org>2015-05-13 16:19:30 +0800
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>2015-05-13 23:28:16 +0200
commitddcc18f5bdd1aafd457032ec693fd9d0af764d61 (patch)
tree0fc442b95f716e618e8b49c30b72babade41a1ed
parentd3da7cb9d243c484fcb05e6c16f55090fba99702 (diff)
ACPI / processor: Introduce invalid_phys_cpuid()
Introduce invalid_phys_cpuid() to identify cpu with invalid physical ID, then used it as replacement of the direct comparisons with PHYS_CPUID_INVALID. Signed-off-by: Hanjun Guo <hanjun.guo@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
-rw-r--r--drivers/acpi/acpi_processor.c4
-rw-r--r--drivers/acpi/processor_core.c4
-rw-r--r--include/linux/acpi.h5
3 files changed, 9 insertions, 4 deletions
diff --git a/drivers/acpi/acpi_processor.c b/drivers/acpi/acpi_processor.c
index 62c846befb62..92a5f738e370 100644
--- a/drivers/acpi/acpi_processor.c
+++ b/drivers/acpi/acpi_processor.c
@@ -170,7 +170,7 @@ static int acpi_processor_hotadd_init(struct acpi_processor *pr)
acpi_status status;
int ret;
- if (pr->phys_id == PHYS_CPUID_INVALID)
+ if (invalid_phys_cpuid(pr->phys_id))
return -ENODEV;
status = acpi_evaluate_integer(pr->handle, "_STA", NULL, &sta);
@@ -264,7 +264,7 @@ static int acpi_processor_get_info(struct acpi_device *device)
pr->phys_id = acpi_get_phys_id(pr->handle, device_declaration,
pr->acpi_id);
- if (pr->phys_id == PHYS_CPUID_INVALID)
+ if (invalid_phys_cpuid(pr->phys_id))
acpi_handle_debug(pr->handle, "failed to get CPU physical ID.\n");
pr->id = acpi_map_cpuid(pr->phys_id, pr->acpi_id);
diff --git a/drivers/acpi/processor_core.c b/drivers/acpi/processor_core.c
index fd4140dabbf1..33a38d604630 100644
--- a/drivers/acpi/processor_core.c
+++ b/drivers/acpi/processor_core.c
@@ -184,7 +184,7 @@ phys_cpuid_t acpi_get_phys_id(acpi_handle handle, int type, u32 acpi_id)
phys_cpuid_t phys_id;
phys_id = map_mat_entry(handle, type, acpi_id);
- if (phys_id == PHYS_CPUID_INVALID)
+ if (invalid_phys_cpuid(phys_id))
phys_id = map_madt_entry(type, acpi_id);
return phys_id;
@@ -196,7 +196,7 @@ int acpi_map_cpuid(phys_cpuid_t phys_id, u32 acpi_id)
int i;
#endif
- if (phys_id == PHYS_CPUID_INVALID) {
+ if (invalid_phys_cpuid(phys_id)) {
/*
* On UP processor, there is no _MAT or MADT table.
* So above phys_id is always set to PHYS_CPUID_INVALID.
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 913b49f9a6e6..90e4ed1eb191 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -163,6 +163,11 @@ static inline bool invalid_logical_cpuid(u32 cpuid)
return (int)cpuid < 0;
}
+static inline bool invalid_phys_cpuid(phys_cpuid_t phys_id)
+{
+ return phys_id == PHYS_CPUID_INVALID;
+}
+
#ifdef CONFIG_ACPI_HOTPLUG_CPU
/* Arch dependent functions for cpu hotplug support */
int acpi_map_cpu(acpi_handle handle, phys_cpuid_t physid, int *pcpu);