commit 745b67e86f2e1d44462dbda25f9ae7166d1511b8
author Keith Mok <keithmok@google.com> Wed Apr 13 04:00:41 2022 +0000
committer Keith Mok <keithmok@google.com> Wed Apr 13 04:44:38 2022 +0000
tree 2fe648f255ebdd6133e392862fc9f3f42387a9a6
parent 9110a7c02b7b3ddf570a2b23a15a264f8ef60c81

CtsKernelConfigTestCases cts-on-gsi

run cts-on-gsi -m CtsKernelConfigTestCases
will failed on device with kernel not enabled
CONFIG_PSTORE_PMSG. If CONFIG_PSTORE_PMSG not enabled
/dev/pmsg0 device node will not exists, but
echo HELLOWORLD > /dev/pmsg0 will tries to create a file
in /dev folder which will failed.

Since CONFIG_PSTORE_PMSG is not a mandatory config,
add a checking to see if /dev/pmsg0 exist first before
echo/write into it.

Bug: 215043302
Test: On device kernwl without CONFIG_PSTORE_PMSG enabled
      run cts-on-gsi -m CtsKernelConfigTestCases
Change-Id: I5009558fc3a853772c27e5967eb49bd44f171ae0