diff options
| author | Kai-Heng Feng <kai.heng.feng@canonical.com> | 2019-01-12 03:54:24 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-01-18 10:02:56 +0100 |
| commit | 7529b2574a7aaf902f1f8159fbc2a7caa74be559 (patch) | |
| tree | 2e8415fcc95412fe08bfdc80da1ceb28b137fcac /drivers/usb/core/driver.c | |
| parent | 5f620bb6439ea8f354cfe4c7d47887df9d3acaf0 (diff) | |
| download | linux-7529b2574a7aaf902f1f8159fbc2a7caa74be559.tar.gz | |
USB: Add new USB LPM helpers
Use new helpers to make LPM enabling/disabling more clear. This is a preparation to subsequent patch. Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Cc: stable <stable@vger.kernel.org> # after much soaking Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/core/driver.c')
| -rw-r--r-- | drivers/usb/core/driver.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/usb/core/driver.c b/drivers/usb/core/driver.c index 53564386ed57..c276ffc5561f 100644 --- a/drivers/usb/core/driver.c +++ b/drivers/usb/core/driver.c @@ -1896,7 +1896,7 @@ int usb_runtime_idle(struct device *dev) return -EBUSY; } -int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable) +static int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable) { struct usb_hcd *hcd = bus_to_hcd(udev->bus); int ret = -EPERM; @@ -1913,6 +1913,16 @@ int usb_set_usb2_hardware_lpm(struct usb_device *udev, int enable) return ret; } +int usb_enable_usb2_hardware_lpm(struct usb_device *udev) +{ + return usb_set_usb2_hardware_lpm(udev, 1); +} + +int usb_disable_usb2_hardware_lpm(struct usb_device *udev) +{ + return usb_set_usb2_hardware_lpm(udev, 0); +} + #endif /* CONFIG_PM */ struct bus_type usb_bus_type = { |