Have it return 1 in both input_dev_type and input_class (for evdev
handlers) so that input devices that are runtime-suspended won't be
suspended when the system goes to a sleep state. This can make resume
times considerably shorter because these devices don't need to be
resumed when the system is awaken.
Signed-off-by: Tomeu Vizoso <tomeu.vizoso@xxxxxxxxxxxxx>
---
drivers/input/input.c | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/drivers/input/input.c b/drivers/input/input.c
index cc357f1..cbbd391 100644
--- a/drivers/input/input.c
+++ b/drivers/input/input.c
@@ -1741,12 +1741,22 @@ static int input_dev_poweroff(struct device *dev)
return 0;
}
+static int input_dev_prepare(struct device *dev)
+{
+ return 1;
+}
+
static const struct dev_pm_ops input_dev_pm_ops = {
.suspend = input_dev_suspend,
.resume = input_dev_resume,
.freeze = input_dev_freeze,
.poweroff = input_dev_poweroff,
.restore = input_dev_resume,
+ .prepare = input_dev_prepare,
+};
+
+static const struct dev_pm_ops input_class_pm_ops = {
+ .prepare = input_dev_prepare,
};
#endif /* CONFIG_PM */
@@ -1767,6 +1777,9 @@ static char *input_devnode(struct device *dev, umode_t *mode)
struct class input_class = {
.name = "input",
.devnode = input_devnode,
+#ifdef CONFIG_PM_SLEEP
+ .pm = &input_class_pm_ops,
+#endif
};
EXPORT_SYMBOL_GPL(input_class);
--
2.3.4
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