tree 4b09c1a2559ed8c38ac81d21fffefb9312962336
parent 781ded4fc6c5552aaf8a6701c25d12eadfbec5f2
author Leo Chang <schang@qca.qualcomm.com> 1372716951 -0700
committer Gopichand Nakkala <gnakkala@qca.qualcomm.com> 1373554222 -0700

wlan: reduce TX SMSM notification

Current TX design sends 2 times SMSM notification to FW
per TX packet. But this design makes SMSM interrupt overflow in FW.
To reduce SMSM notification.
   - SMSM notification per empty/non-emptyr based,
     as followed as original design
   - To avoid data stall, if there is any pending frame in TX chain
     force SMSM toggle.
     This SMSM toggle will happen per TX schedule in worst case.
     Will not happen per TX packet.

Change-Id: I1e74661fd18c8d807bfd116543e3abdcc70e28ab
CRs-fixed: 496376