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PNP: make pnpacpi_suspend handle errors

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pnpacpi_suspend() doesn't check the result returned by
acpi_pm_device_sleep_state() before passing it to acpi_bus_set_power(),
which may not be desirable.   Make it select the target power state of the
device using its second argument if acpi_pm_device_sleep_state() fails.

Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl>
Looks-ok-to: Pavel Machek <pavel@ucw.cz>
Cc: Adam Belay <ambx1@neo.rr.com>
Cc: Bjorn Helgaas <bjorn.helgaas@hp.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Rafael J. Wysocki 2007-10-16 23:31:06 -07:00 committed by Linus Torvalds
parent e8e961574b
commit 36e02b6208
1 changed files with 10 additions and 5 deletions
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15
drivers/pnp/pnpacpi/core.c
View file

@ -130,11 +130,16 @@ static int pnpacpi_disable_resources(struct pnp_dev *dev)
#ifdef CONFIG_ACPI_SLEEP
static int pnpacpi_suspend(struct pnp_dev *dev, pm_message_t state)
{
return acpi_bus_set_power((acpi_handle) dev->data,
acpi_pm_device_sleep_state(&dev->dev,
device_may_wakeup
(&dev->dev),
NULL));
int power_state;
power_state = acpi_pm_device_sleep_state(&dev->dev,
device_may_wakeup(&dev->dev),
NULL);
if (power_state < 0)
power_state = (state.event == PM_EVENT_ON) ?
ACPI_STATE_D0 : ACPI_STATE_D3;
return acpi_bus_set_power((acpi_handle) dev->data, power_state);
}
static int pnpacpi_resume(struct pnp_dev *dev)