tree dff1f0c0da12c482bd5407cd5eedf497d50a1271
parent a2899bd8558dfd843da22cd0b03905d9d45343bd
author Phil Burk <philburk@google.com> 1502149809 -0700
committer Phil Burk <philburk@google.com> 1502149809 -0700

tinyalsa: check for NULL mmap_status

pcm_mmap_get_hw_ptr() was not checking pcm->mmap_status and
crashed when it was NULL.

Bug: 64346189
Test: input_monitor.cpp, see bug report for repro steps
Change-Id: I8436686a231eb01a82dd28ca2cce561d5460bcd6