diff options
| author | Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> | 2005-09-15 12:19:00 -0400 |
|---|---|---|
| committer | Len Brown <len.brown@intel.com> | 2005-11-30 03:23:06 -0500 |
| commit | 6d93c64803a5fea84839789aae13290419c62d92 (patch) | |
| tree | 5f3e1391e17d44cd61fcd8d628d8f33880fcd15e /drivers | |
| parent | d2ef5ebb4c4fe141a82252d4db8d8521e6765c5a (diff) | |
[ACPI] Prefer _CST over FADT for C-state capabilities
Note: This ACPI standard compliance may cause regression
on some system, if they have _CST present, but _CST value
is bogus. "nocst" module parameter should workaround
that regression.
http://bugzilla.kernel.org/show_bug.cgi?id=5165
Signed-off-by: Venkatesh Pallipadi<venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
(cherry picked from 883baf7f7e81cca26f4683ae0d25ba48f094cc08 commit)
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/acpi/processor_idle.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/drivers/acpi/processor_idle.c b/drivers/acpi/processor_idle.c index 70d8a6ec0920..5b6a9865300e 100644 --- a/drivers/acpi/processor_idle.c +++ b/drivers/acpi/processor_idle.c @@ -690,7 +690,7 @@ static int acpi_processor_get_power_info_cst(struct acpi_processor *pr) /* Validate number of power states discovered */ if (pr->power.count < 2) - status = -ENODEV; + status = -EFAULT; end: acpi_os_free(buffer.pointer); @@ -841,11 +841,11 @@ static int acpi_processor_get_power_info(struct acpi_processor *pr) * this function */ result = acpi_processor_get_power_info_cst(pr); - if ((result) || (acpi_processor_power_verify(pr) < 2)) { + if (result == -ENODEV) result = acpi_processor_get_power_info_fadt(pr); - if ((result) || (acpi_processor_power_verify(pr) < 2)) - result = acpi_processor_get_power_info_default_c1(pr); - } + + if ((result) || (acpi_processor_power_verify(pr) < 2)) + result = acpi_processor_get_power_info_default_c1(pr); /* * Set Default Policy |