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path: root/drivers/acpi/power.c
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Diffstat (limited to 'drivers/acpi/power.c')
-rw-r--r--drivers/acpi/power.c12
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/acpi/power.c b/drivers/acpi/power.c
index 67dedeed144c..4c9c2fb5d98f 100644
--- a/drivers/acpi/power.c
+++ b/drivers/acpi/power.c
@@ -213,11 +213,13 @@ static int acpi_power_on(acpi_handle handle)
213 resource->name)); 213 resource->name));
214 } else { 214 } else {
215 result = __acpi_power_on(resource); 215 result = __acpi_power_on(resource);
216 if (result)
217 resource->ref_count--;
216 } 218 }
217 219
218 mutex_unlock(&resource->resource_lock); 220 mutex_unlock(&resource->resource_lock);
219 221
220 return 0; 222 return result;
221} 223}
222 224
223static int acpi_power_off_device(acpi_handle handle) 225static int acpi_power_off_device(acpi_handle handle)
@@ -465,10 +467,12 @@ int acpi_power_transition(struct acpi_device *device, int state)
465 struct acpi_handle_list *tl = NULL; /* Target Resources */ 467 struct acpi_handle_list *tl = NULL; /* Target Resources */
466 int i = 0; 468 int i = 0;
467 469
468
469 if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3)) 470 if (!device || (state < ACPI_STATE_D0) || (state > ACPI_STATE_D3))
470 return -EINVAL; 471 return -EINVAL;
471 472
473 if (device->power.state == state)
474 return 0;
475
472 if ((device->power.state < ACPI_STATE_D0) 476 if ((device->power.state < ACPI_STATE_D0)
473 || (device->power.state > ACPI_STATE_D3)) 477 || (device->power.state > ACPI_STATE_D3))
474 return -ENODEV; 478 return -ENODEV;
@@ -488,10 +492,6 @@ int acpi_power_transition(struct acpi_device *device, int state)
488 goto end; 492 goto end;
489 } 493 }
490 494
491 if (device->power.state == state) {
492 goto end;
493 }
494
495 /* 495 /*
496 * Then we dereference all power resources used in the current list. 496 * Then we dereference all power resources used in the current list.
497 */ 497 */