ab2b2e4f8b
MMSCH FW need to get the wptr from 0 after it get the mailbox request from driver, since every time kick the mailbox, mmsch thinks that it is the first time engine start to initialize. Signed-off-by: Frank Min <Frank.Min@amd.com> Signed-off-by: Xiangliang.Yu <Xiangliang.Yu@amd.com> Acked-by: Alex Deucher <alexander.deucher@amd.com> Signed-off-by: Alex Deucher <alexander.deucher@amd.com>