i2c-hid devices' suspend/resume are usually time-consuming process. For example, the touch controller(i2c-ATML1000:00) on ASUS T100 tablet takes about 160ms for suspending and 120ms for resuming. This patch enables i2c-hid devices to suspend/resume asynchronously. This will take advantage of multicore and speed up system suspend/resume process. Signed-off-by: Zhonghui Fu <zhonghui.fu@xxxxxxxxxxxxxxx> --- drivers/hid/i2c-hid/i2c-hid.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-) diff --git a/drivers/hid/i2c-hid/i2c-hid.c b/drivers/hid/i2c-hid/i2c-hid.c index 2e021ba..cc41e1e 100644 --- a/drivers/hid/i2c-hid/i2c-hid.c +++ b/drivers/hid/i2c-hid/i2c-hid.c @@ -1020,6 +1020,7 @@ static int i2c_hid_probe(struct i2c_client *client, pm_runtime_get_noresume(&client->dev); pm_runtime_set_active(&client->dev); pm_runtime_enable(&client->dev); + device_enable_async_suspend(&client->dev); ret = i2c_hid_fetch_hid_descriptor(ihid); if (ret < 0) -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
