tree ecb2233fc84cc23e40f71498cbf65c62fdc0ebfa
parent ca0a68cc8afd023c94bcd5a1f3f2b2f9407fbe3b
author Wink Saville <wink@google.com> 1323317274 -0800
committer Wink Saville <wink@google.com> 1323317274 -0800

When the SIM_READY set current preferred network type.

This looks to fix a problem where the nv_data.bin file
file gets corrupted. When greping a radio log for "md5" if something
like following is seen:

  RIL(s)  : load_md5_state: MD5 state 1
  RIL(s)  : check_md5:
  RIL(s)  : compute_md5: path /efs/nv_data.bin
  RIL(s)  : check_md5: MD5 fail. orignal md5 '628647a8e5c6cac2d586199417c0103c' computed md5 '58a635cbaf5fe4ffb2797aeaa2b32709' (rild)
  RIL(s)  : check_md5:
  RIL(s)  : compute_md5: path /efs/.nv_data.bak

It means that corruption was detected and a back version was used
which is ok. Apparently that backup version can have the default
network type revert to 2G only thus causing the symptoms reported
in b/5695729 where after taking an OTA 2G becomes the default.

By calling setCurrentPreferredNetworkType when the sim is ready we
can reset the the network type to 3G.

Note: I also tried calling setCurrentPreferredNetworkType in
EVENT_RADIO_AVAILABLE but that didn't work and we would see
the response to setPreferredNetworkType failing as the ril wasn't ready.

  RILJ    : setCurrentPreferredNetworkType: 0
  RILJ    : [0004]> REQUEST_SET_PREFERRED_NETWORK_TYPE : 0
  RILJ    : [0004]< REQUEST_SET_PREFERRED_NETWORK_TYPE error: com.android.internal.telephony.CommandException: RADIO_NOT_AVAILABLE


Bug: 5695729
Change-Id: Ibbd29cda0b201a8c08f4dcfa5cec211611e1d599