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...@linux.intel.com>
---
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
