diff options
| author | Pratyush Anand | 2014-07-04 16:01:27 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2014-07-10 00:41:34 +0200 |
| commit | 51df62ff74b371866c1006dee887a8e42838c1f2 (patch) | |
| tree | e0789766eef80b4adf66b4df57297380c55a9454 /Documentation/usb/power-management.txt | |
| parent | dwc3: host: Enable USB3 LPM capability (diff) | |
| download | kernel-qcow2-linux-51df62ff74b371866c1006dee887a8e42838c1f2.tar.gz kernel-qcow2-linux-51df62ff74b371866c1006dee887a8e42838c1f2.tar.xz kernel-qcow2-linux-51df62ff74b371866c1006dee887a8e42838c1f2.zip | |
usb: allow lpm (en/dis)able only if device is atleast in default state
When a USB device is disconnected, usb_unbind_interface is called, which
tries to enable and disable LPM. usb_enable_lpm also try to send a
control command SET SEL to the device.
Since device is already disconnected, therefore it does not make sense
to execute usb_(en/dis)able_lpm.
This patch returns from usb_(en/dis)able_lpm, if device was not in
default state atleast.
Signed-off-by: Pratyush Anand <pratyush.anand@st.com>
Tested-by: Aymen Bouattay <aymen.bouattay@st.com>
Signed-off-by: Mathias Nyman <mathias.nyman@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Documentation/usb/power-management.txt')
0 files changed, 0 insertions, 0 deletions