wlan: DXE TX stall issue fix.
When RIVA power collapse with IMPS mode, DXE descriptor related register
back up is not happen properly.
So when RIVA get out from Power collapse, head descriptor did not
programmed. Some old descriptor pointer programmed into DXE HW. Then,
DXE HW cannot see actuall valid descriptor and stall happen. To resolve
this, when host power mode change from IMPS to Full power, force
reprogram DXE register with head descriptor
Change-Id: I02160239c21a1cb65a76764e573f19d6dede4f23
CR-Fixed: 403819
1 file changed