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Diffstat (limited to 'Documentation/power')
| -rw-r--r-- | Documentation/power/devices.txt | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/Documentation/power/devices.txt b/Documentation/power/devices.txt index 461e4f1dbec4..421e7d00ffd0 100644 --- a/Documentation/power/devices.txt +++ b/Documentation/power/devices.txt | |||
| @@ -196,6 +196,11 @@ its parent; and can't be removed or suspended after that parent. | |||
| 196 | 196 | ||
| 197 | The policy is that the device tree should match hardware bus topology. | 197 | The policy is that the device tree should match hardware bus topology. |
| 198 | (Or at least the control bus, for devices which use multiple busses.) | 198 | (Or at least the control bus, for devices which use multiple busses.) |
| 199 | In particular, this means that a device registration may fail if the parent of | ||
| 200 | the device is suspending (ie. has been chosen by the PM core as the next | ||
| 201 | device to suspend) or has already suspended, as well as after all of the other | ||
| 202 | devices have been suspended. Device drivers must be prepared to cope with such | ||
| 203 | situations. | ||
| 199 | 204 | ||
| 200 | 205 | ||
| 201 | Suspending Devices | 206 | Suspending Devices |