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ACPI / processor: use container_of instead of casting first structure member

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Use container_of instead of casting first structure member to resolve
acpi_madt_local_apic/sapic/x2apic from acpi_subtable_header.

Signed-off-by: Fabian Frederick <fabf@skynet.be>
[ rjw: Subject and changelog ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
This commit is contained in:
Fabian Frederick 2014-09-14 15:12:43 +02:00 committed by Rafael J. Wysocki
parent 0f33be009b
commit ef86c3f4be
1 changed files with 3 additions and 3 deletions
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6
drivers/acpi/processor_core.c
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@ -16,7 +16,7 @@ static int map_lapic_id(struct acpi_subtable_header *entry,
u32 acpi_id, int *apic_id)
{
struct acpi_madt_local_apic *lapic =
(struct acpi_madt_local_apic *)entry;
container_of(entry, struct acpi_madt_local_apic, header);
if (!(lapic->lapic_flags & ACPI_MADT_ENABLED))
return -ENODEV;
@ -32,7 +32,7 @@ static int map_x2apic_id(struct acpi_subtable_header *entry,
int device_declaration, u32 acpi_id, int *apic_id)
{
struct acpi_madt_local_x2apic *apic =
(struct acpi_madt_local_x2apic *)entry;
container_of(entry, struct acpi_madt_local_x2apic, header);
if (!(apic->lapic_flags & ACPI_MADT_ENABLED))
return -ENODEV;
@ -49,7 +49,7 @@ static int map_lsapic_id(struct acpi_subtable_header *entry,
int device_declaration, u32 acpi_id, int *apic_id)
{
struct acpi_madt_local_sapic *lsapic =
(struct acpi_madt_local_sapic *)entry;
container_of(entry, struct acpi_madt_local_sapic, header);
if (!(lsapic->lapic_flags & ACPI_MADT_ENABLED))
return -ENODEV;