tree 6bf7e2081c4f40cf7d76353e9eeb9b8d182a1e88
parent 3f6051b52e65adc33988afc17df5d2c2b9a8d01b
author vivek mehta <mvivek@codeaurora.org> 1473903469 -0700
committer Tom Cherry <tomcherry@google.com> 1476845201 -0700

msm8916: hal: optimize worst case soundcard detection time

current sound card detection logic
   - iterate from sound card 0 to Max i.e. 8
   - on each iteration check if soundcard is not enumerated then
     wait for 500 ms and check again, try up-to 10 retries
   - worst case time is 40 sec  (8 * 10 * 500ms)
New sound card detection logic
   - iterate for max retries i.e. 10
   - on each iteration check if any new sound card enumerated i.e.
     probe soundcard only if on previous iteration it failed
   - on failure move to next card until all card are verified
   - at this point wait for 500ms and retry
   - worst case time is 5 sec  (10 * 500ms)

Change-Id: I63da64ce90ac037ad3a85d30cf8355a992e2c510