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authorFu, Zhonghui <zhonghui.fu@linux.intel.com>2016-05-19 02:46:24 (GMT)
committerJiri Kosina <jkosina@suse.cz>2016-06-06 08:40:59 (GMT)
commit982e42d655ad9a579147e0feaf9a050b57d3d71e (patch)
tree084e6cbf121be7ffd1418f2613a61b0492ca16ce /drivers/hid
parentdcc4c2f61cdc7e0ab61b25b8d28205302497a8c4 (diff)
downloadlinux-982e42d655ad9a579147e0feaf9a050b57d3d71e.tar.xz
HID: i2c_hid: enable i2c-hid devices to suspend/resume asynchronously
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@linux.intel.com> Acked-by: Benjamin Tissoires <benjamin.tissoires@redhat.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/i2c-hid/i2c-hid.c1
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)