tree fdfdbe679084cb9c2c77ade8ffea7672cca6f275
parent 1b3fa22d7119993d05738ece094b53f176808a74
author Matt Mower <mowerm@gmail.com> 1487893200 -0600
committer Matt Mower <mowerm@gmail.com> 1487899293 -0600

Fix handling of USB config during MTP switching

The property set of sys.usb.config was not part of the original 'Only
change USB mode to mtp when ready for MTP' commit. Further, it adds an
additional USB off/on toggle to the MTP startup routine, potentially
confusing the host computer. The default init.recovery.usb.rc already
sets the usb functions to 'adb' during 'on fs'.

It is possible that devices could run into issues with MTP startup due
to sys.usb.config not yet being set. This is actually due to a poor
design decision in Enable_MTP(), where sys.usb.config would not be
configured for mtp if sys.usb.config had never been set. It is not
necessary to check for a previous value, just set it.

Fix the USB PID for adb-only mode in Disable_MTP().

Change-Id: I21b5e64c9bdcd3104372a8b4eb8ea50cf4561892