evie/android_kernel_oneplus_msm8998
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

usb: host: xhci: Replace msleep with usleep_range

Browse source 
Since usleep_range provides better accuracy in
comparison to msleep. This helps in reducing the
latency of host bus resume.

Change-Id: Id22104b9e5b63153731df9eb55759de9a86128c6
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>
This commit is contained in:
Hemant Kumar 2016-11-08 15:46:44 -08:00
parent cd316285c5
commit ab1ac1288b
1 changed files with 2 additions and 2 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

4
drivers/usb/host/xhci-hub.c
View file

@ -1165,7 +1165,7 @@ int xhci_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
xhci_set_link_state(xhci, port_array, wIndex,
XDEV_RESUME);
spin_unlock_irqrestore(&xhci->lock, flags);
msleep(20);
usleep_range(21000, 21500);
spin_lock_irqsave(&xhci->lock, flags);
xhci_set_link_state(xhci, port_array, wIndex,
XDEV_U0);
@ -1409,7 +1409,7 @@ int xhci_bus_resume(struct usb_hcd *hcd)
if (need_usb2_u3_exit) {
spin_unlock_irqrestore(&xhci->lock, flags);
msleep(20);
usleep_range(21000, 21500);
spin_lock_irqsave(&xhci->lock, flags);
}