diff options
| author | Hemant Kumar <hemantk@codeaurora.org> | 2016-11-08 15:42:13 -0800 |
|---|---|---|
| committer | Hemant Kumar <hemantk@codeaurora.org> | 2016-11-10 11:14:26 -0800 |
| commit | 286fd3fcbf748c2a7fa204bcb4618e6fe60c3ea1 (patch) | |
| tree | 825d0354905c4d64bee44e2f478dfa52e12384f7 /drivers | |
| parent | cd316285c5cb5f72cff8cd4e65ff6154a2ff3a4b (diff) | |
usb: core: Replace msleep with usleep_range
Since usleep_range provides better accuracy in
comparison to msleep. This helps in reducing
the latency of host bus resume.
Change-Id: Ie8d5231327fcc27ab2a28542e0d96687abb9aace
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/core/hub.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 269c1ee2da44..515d34c091e1 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -3434,7 +3434,8 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg) /* drive resume for USB_RESUME_TIMEOUT msec */ dev_dbg(&udev->dev, "usb %sresume\n", (PMSG_IS_AUTO(msg) ? "auto-" : "")); - msleep(USB_RESUME_TIMEOUT); + usleep_range(USB_RESUME_TIMEOUT * 1000, + (USB_RESUME_TIMEOUT + 1) * 1000); /* Virtual root hubs can trigger on GET_PORT_STATUS to * stop resume signaling. Then finish the resume @@ -3443,7 +3444,7 @@ int usb_port_resume(struct usb_device *udev, pm_message_t msg) status = hub_port_status(hub, port1, &portstatus, &portchange); /* TRSMRCY = 10 msec */ - msleep(10); + usleep_range(10000, 10500); } SuspendCleared: |