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usb: core: hub: Enable/disable U1/U2 in configured state

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SET_FEATURE(U1/U2_ENABLE) and CLEAR_FEATURE(U1/U2) only apply while the
device is in configured state. Add proper check in usb_disable_lpm() and
usb_enable_lpm() for enabling/disabling device-initiated U1/U2.

Signed-off-by: Thinh Nguyen <thinhn@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Thinh Nguyen 2019-05-14 14:38:31 -07:00 committed by Greg Kroah-Hartman
parent d991f855cb
commit fea3af5e03
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/core/hub.c
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@ -4139,7 +4139,7 @@ int usb_disable_lpm(struct usb_device *udev)
if (!udev || !udev->parent ||
udev->speed < USB_SPEED_SUPER ||
!udev->lpm_capable ||
udev->state < USB_STATE_DEFAULT)
udev->state < USB_STATE_CONFIGURED)
return 0;
hcd = bus_to_hcd(udev->bus);
@ -4198,7 +4198,7 @@ void usb_enable_lpm(struct usb_device *udev)
if (!udev || !udev->parent ||
udev->speed < USB_SPEED_SUPER ||
!udev->lpm_capable ||
udev->state < USB_STATE_DEFAULT)
udev->state < USB_STATE_CONFIGURED)
return;
udev->lpm_disable_count--;