tree c1dfbe15e644a723a27ddd423961ee4b96617238
parent 3ff768954a8d1ac1effc3a745f842b231f58a93c
author Phil Burk <philburk@google.com> 1561060141 -0700
committer Phil Burk <philburk@google.com> 1561070158 -0700

audio_hw: close mmap file descriptor to fix leak

The file descriptor for MMAP shared memory was created
and passed to AudioFlinger but never closed.
Now the FD is closed when the stream is goes to standby.

Bug: 134381208
Test: Get HAL pid.
Test:     adb shell ps | grep audio
Test:     adb shell ls -l /proc/{halpid}/fd | wc
Test: Run Oboetester or other app that uses MMAP
Test: Completely close the app.
Test:     adb shell ls -l /proc/{halpid}/fd | wc
Test: Count should NOT grow each time.
Change-Id: Ieaaf1c6bdc96e7ecf01cee23215fb39f79662111