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Merge branch 'FW_BUG' into test

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This commit is contained in:
Len Brown 2008-10-22 23:19:45 -04:00
commit 6b3c4f8b9c
3 changed files with 63 additions and 21 deletions
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18
drivers/acpi/processor_perflib.c
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@ -38,6 +38,7 @@
#include <asm/uaccess.h>
#endif
#include <asm/cpufeature.h>
#include <acpi/acpi_bus.h>
#include <acpi/processor.h>
@ -334,7 +335,6 @@ static int acpi_processor_get_performance_info(struct acpi_processor *pr)
acpi_status status = AE_OK;
acpi_handle handle = NULL;
if (!pr || !pr->performance || !pr->handle)
return -EINVAL;
@ -347,13 +347,25 @@ static int acpi_processor_get_performance_info(struct acpi_processor *pr)
result = acpi_processor_get_performance_control(pr);
if (result)
return result;
goto update_bios;
result = acpi_processor_get_performance_states(pr);
if (result)
return result;
goto update_bios;
return 0;
/*
* Having _PPC but missing frequencies (_PSS, _PCT) is a very good hint that
* the BIOS is older than the CPU and does not know its frequencies
*/
update_bios:
if (ACPI_SUCCESS(acpi_get_handle(pr->handle, "_PPC", &handle))){
if(boot_cpu_has(X86_FEATURE_EST))
printk(KERN_WARNING FW_BUG "BIOS needs update for CPU "
"frequency support\n");
}
return result;
}
int acpi_processor_notify_smm(struct module *calling_module)