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Handle errors from device_get_children.

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This commit is contained in:
Warner Losh 2008-08-23 16:38:20 +00:00
parent 47c657e929
commit 099ea4b570
1 changed files with 9 additions and 4 deletions
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13
sys/dev/acpica/acpi.c
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@ -665,7 +665,9 @@ acpi_suspend(device_t dev)
* device has an _SxD method for the next sleep state, use that power
* state instead.
*/
device_get_children(dev, &devlist, &numdevs);
error = device_get_children(dev, &devlist, &numdevs);
if (error)
return (error);
for (i = 0; i < numdevs; i++) {
/* If the device is not attached, we've powered it down elsewhere. */
child = devlist[i];
@ -692,7 +694,7 @@ static int
acpi_resume(device_t dev)
{
ACPI_HANDLE handle;
int i, numdevs;
int i, numdevs, error;
device_t child, *devlist;
GIANT_REQUIRED;
@ -701,7 +703,9 @@ acpi_resume(device_t dev)
* Put all devices in D0 before resuming them. Call _S0D on each one
* since some systems expect this.
*/
device_get_children(dev, &devlist, &numdevs);
error = device_get_children(dev, &devlist, &numdevs);
if (error)
return (error);
for (i = 0; i < numdevs; i++) {
child = devlist[i];
handle = acpi_get_handle(child);
@ -801,7 +805,8 @@ acpi_driver_added(device_t dev, driver_t *driver)
int i, numdevs;
DEVICE_IDENTIFY(driver, dev);
device_get_children(dev, &devlist, &numdevs);
if (device_get_children(dev, &devlist, &numdevs))
return;
for (i = 0; i < numdevs; i++) {
child = devlist[i];
if (device_get_state(child) == DS_NOTPRESENT) {