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ACPI: build fix for u8 cpu_index

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Local apic entries are only 8 bits, but it seemed to not be caught with u8
return value result in the check

cpu_index >= NR_CPUS becomming always false.

drivers/acpi/processor_core.c: In function `acpi_processor_get_info':
drivers/acpi/processor_core.c:483: warning: comparison is always false due to limited range of data type

Signed-off-by: Ashok Raj <ashok.raj@intel.com>
Cc: Dave Jones <davej@codemonkey.org.uk>
Cc: Kenji Kaneshige <kaneshige.kenji@soft.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Len Brown <len.brown@intel.com>
This commit is contained in:
Ashok Raj 2006-03-28 17:04:00 -05:00 committed by Len Brown
parent 200739c179
commit df42baa0d8
1 changed files with 5 additions and 5 deletions
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10
drivers/acpi/processor_core.c
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@ -388,7 +388,7 @@ static int acpi_processor_remove_fs(struct acpi_device *device)
/* Use the acpiid in MADT to map cpus in case of SMP */
#ifndef CONFIG_SMP
#define convert_acpiid_to_cpu(acpi_id) (0xff)
#define convert_acpiid_to_cpu(acpi_id) (-1)
#else
#ifdef CONFIG_IA64
@ -401,7 +401,7 @@ static int acpi_processor_remove_fs(struct acpi_device *device)
#define ARCH_BAD_APICID (0xff)
#endif
static u8 convert_acpiid_to_cpu(u8 acpi_id)
static int convert_acpiid_to_cpu(u8 acpi_id)
{
u16 apic_id;
int i;
@ -427,7 +427,7 @@ static int acpi_processor_get_info(struct acpi_processor *pr)
acpi_status status = 0;
union acpi_object object = { 0 };
struct acpi_buffer buffer = { sizeof(union acpi_object), &object };
u8 cpu_index;
int cpu_index;
static int cpu0_initialized;
ACPI_FUNCTION_TRACE("acpi_processor_get_info");
@ -473,7 +473,7 @@ static int acpi_processor_get_info(struct acpi_processor *pr)
cpu_index = convert_acpiid_to_cpu(pr->acpi_id);
/* Handle UP system running SMP kernel, with no LAPIC in MADT */
if (!cpu0_initialized && (cpu_index == 0xff) &&
if (!cpu0_initialized && (cpu_index == -1) &&
(num_online_cpus() == 1)) {
cpu_index = 0;
}
@ -487,7 +487,7 @@ static int acpi_processor_get_info(struct acpi_processor *pr)
* less than the max # of CPUs. They should be ignored _iff
* they are physically not present.
*/
if (cpu_index >= NR_CPUS) {
if (cpu_index == -1) {
if (ACPI_FAILURE
(acpi_processor_hotadd_init(pr->handle, &pr->id))) {
ACPI_DEBUG_PRINT((ACPI_DB_ERROR,