diff options
Diffstat (limited to 'drivers/pnp/pnpacpi')
| -rw-r--r-- | drivers/pnp/pnpacpi/core.c | 93 |
1 files changed, 67 insertions, 26 deletions
diff --git a/drivers/pnp/pnpacpi/core.c b/drivers/pnp/pnpacpi/core.c index 57313f4658bc..ca84d5099ce7 100644 --- a/drivers/pnp/pnpacpi/core.c +++ b/drivers/pnp/pnpacpi/core.c @@ -81,12 +81,19 @@ static int pnpacpi_get_resources(struct pnp_dev *dev) static int pnpacpi_set_resources(struct pnp_dev *dev) { - struct acpi_device *acpi_dev = dev->data; - acpi_handle handle = acpi_dev->handle; + struct acpi_device *acpi_dev; + acpi_handle handle; struct acpi_buffer buffer; int ret; pnp_dbg(&dev->dev, "set resources\n"); + + handle = DEVICE_ACPI_HANDLE(&dev->dev); + if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &acpi_dev))) { + dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__); + return -ENODEV; + } + ret = pnpacpi_build_resource_template(dev, &buffer); if (ret) return ret; @@ -105,12 +112,18 @@ static int pnpacpi_set_resources(struct pnp_dev *dev) static int pnpacpi_disable_resources(struct pnp_dev *dev) { - struct acpi_device *acpi_dev = dev->data; - acpi_handle handle = acpi_dev->handle; + struct acpi_device *acpi_dev; + acpi_handle handle; int ret; dev_dbg(&dev->dev, "disable resources\n"); + handle = DEVICE_ACPI_HANDLE(&dev->dev); + if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &acpi_dev))) { + dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__); + return 0; + } + /* acpi_unregister_gsi(pnp_irq(dev, 0)); */ ret = 0; if (acpi_bus_power_manageable(handle)) @@ -124,46 +137,74 @@ static int pnpacpi_disable_resources(struct pnp_dev *dev) #ifdef CONFIG_ACPI_SLEEP static bool pnpacpi_can_wakeup(struct pnp_dev *dev) { - struct acpi_device *acpi_dev = dev->data; - acpi_handle handle = acpi_dev->handle; + struct acpi_device *acpi_dev; + acpi_handle handle; + + handle = DEVICE_ACPI_HANDLE(&dev->dev); + if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &acpi_dev))) { + dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__); + return false; + } return acpi_bus_can_wakeup(handle); } static int pnpacpi_suspend(struct pnp_dev *dev, pm_message_t state) { - struct acpi_device *acpi_dev = dev->data; - acpi_handle handle = acpi_dev->handle; - int power_state; + struct acpi_device *acpi_dev; + acpi_handle handle; + int error = 0; + + handle = DEVICE_ACPI_HANDLE(&dev->dev); + if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &acpi_dev))) { + dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__); + return 0; + } if (device_can_wakeup(&dev->dev)) { - int rc = acpi_pm_device_sleep_wake(&dev->dev, + error = acpi_pm_device_sleep_wake(&dev->dev, device_may_wakeup(&dev->dev)); + if (error) + return error; + } + + if (acpi_bus_power_manageable(handle)) { + int power_state = acpi_pm_device_sleep_state(&dev->dev, NULL); + + if (power_state < 0) + power_state = (state.event == PM_EVENT_ON) ? + ACPI_STATE_D0 : ACPI_STATE_D3; - if (rc) - return rc; + /* + * acpi_bus_set_power() often fails (keyboard port can't be + * powered-down?), and in any case, our return value is ignored + * by pnp_bus_suspend(). Hence we don't revert the wakeup + * setting if the set_power fails. + */ + error = acpi_bus_set_power(handle, power_state); } - power_state = acpi_pm_device_sleep_state(&dev->dev, NULL); - if (power_state < 0) - power_state = (state.event == PM_EVENT_ON) ? - ACPI_STATE_D0 : ACPI_STATE_D3; - - /* acpi_bus_set_power() often fails (keyboard port can't be - * powered-down?), and in any case, our return value is ignored - * by pnp_bus_suspend(). Hence we don't revert the wakeup - * setting if the set_power fails. - */ - return acpi_bus_set_power(handle, power_state); + + return error; } static int pnpacpi_resume(struct pnp_dev *dev) { - struct acpi_device *acpi_dev = dev->data; - acpi_handle handle = acpi_dev->handle; + struct acpi_device *acpi_dev; + acpi_handle handle = DEVICE_ACPI_HANDLE(&dev->dev); + int error = 0; + + if (!handle || ACPI_FAILURE(acpi_bus_get_device(handle, &acpi_dev))) { + dev_dbg(&dev->dev, "ACPI device not found in %s!\n", __func__); + return -ENODEV; + } if (device_may_wakeup(&dev->dev)) acpi_pm_device_sleep_wake(&dev->dev, false); - return acpi_bus_set_power(handle, ACPI_STATE_D0); + + if (acpi_bus_power_manageable(handle)) + error = acpi_bus_set_power(handle, ACPI_STATE_D0); + + return error; } #endif |