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Fix error checking about device state transition from D0 to D3.

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Turn off the resources listed in _PR0 to go to D3 if we don't have _PR3/_PS3.

Reviewed by:	msmith
This commit is contained in:
Mitsuru IWASAKI 2001-08-21 18:22:40 +00:00
parent df1d57cdb9
commit eb5b463449
1 changed files with 27 additions and 4 deletions
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31
sys/dev/acpica/acpi_powerres.c
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@ -299,7 +299,7 @@ acpi_pwr_switch_consumer(ACPI_HANDLE consumer, int state)
{
struct acpi_powerconsumer *pc;
struct acpi_powerreference *pr;
ACPI_HANDLE method_handle, reslist_handle;
ACPI_HANDLE method_handle, reslist_handle, pr0_handle;
ACPI_BUFFER reslist_buffer;
ACPI_OBJECT *reslist_object;
ACPI_STATUS status;
@ -355,6 +355,7 @@ acpi_pwr_switch_consumer(ACPI_HANDLE consumer, int state)
* support D0 and D3. It's never an error to try to go to
* D0.
*/
reslist_object = NULL;
if (AcpiGetHandle(consumer, method_name, &method_handle) != AE_OK)
method_handle = NULL;
if (AcpiGetHandle(consumer, reslist_name, &reslist_handle) != AE_OK)
@ -364,9 +365,24 @@ acpi_pwr_switch_consumer(ACPI_HANDLE consumer, int state)
pc->ac_state = ACPI_STATE_D0;
return_ACPI_STATUS(AE_OK);
}
DEBUG_PRINT(TRACE_OBJECTS, ("attempt to set unsupported state D%d\n",
state));
return_ACPI_STATUS(AE_BAD_PARAMETER);
if (state != ACPI_STATE_D3) {
goto bad;
}
/* turn off the resources listed in _PR0 to go to D3. */
if (AcpiGetHandle(consumer, "_PR0", &pr0_handle) != AE_OK) {
goto bad;
}
status = acpi_EvaluateIntoBuffer(pr0_handle, NULL, NULL, &reslist_buffer);
if (status != AE_OK) {
goto bad;
}
reslist_object = (ACPI_OBJECT *)reslist_buffer.Pointer;
if ((reslist_object->Type != ACPI_TYPE_PACKAGE) ||
(reslist_object->Package.Count == 0)) {
goto bad;
}
AcpiOsFree(reslist_object);
}
/*
@ -434,6 +450,13 @@ acpi_pwr_switch_consumer(ACPI_HANDLE consumer, int state)
/* transition was successful */
pc->ac_state = state;
return_ACPI_STATUS(AE_OK);
bad:
DEBUG_PRINT(TRACE_OBJECTS, ("attempt to set unsupported state D%d\n",
state));
if (reslist_object)
AcpiOsFree(reslist_object);
return_ACPI_STATUS(AE_BAD_PARAMETER);
}
/*