Hi Jiri, Any comments about this patch? After enabling the HID devices suspend/resume asynchronously on ASUS T100TA(Baytrail-T platform), the system suspend-to-idle/resume time is reduced about 20ms. Although this improvement is not very significant. But, if the suspend/resume operation of HID devices is very time-consuming on some other platforms, this patch can improve significantly system suspend/resume speed on these platforms. Thanks, Zhonghui On 9/24/2015 2:06 PM, Fu, Zhonghui wrote: > Now, PM core supports asynchronous suspend/resume mode for devices > during system suspend/resume, and the power state transition of one > device may be completed in separate kernel thread. PM core ensures > all power state transition timing dependency between devices. This > patch enables hid devices to suspend/resume asynchronously. This > will take advantage of multicore and improve system suspend/resume > speed. > > Signed-off-by: Zhonghui Fu <zhonghui.fu@xxxxxxxxxxxxxxx> > --- > Changes in v2: > - Amend commit message. > > drivers/hid/hid-core.c | 1 + > 1 files changed, 1 insertions(+), 0 deletions(-) > > diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c > index 70a11ac..357f3a3 100644 > --- a/drivers/hid/hid-core.c > +++ b/drivers/hid/hid-core.c > @@ -2652,6 +2652,7 @@ struct hid_device *hid_allocate_device(void) > device_initialize(&hdev->dev); > hdev->dev.release = hid_device_release; > hdev->dev.bus = &hid_bus_type; > + device_enable_async_suspend(&hdev->dev); > > hid_close_report(hdev); > > -- 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
