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msm_fb: display: initialize dmap_comp before wait4dmap

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blt_wait flag will be set when both two writeback buffers
are used. In this case, kickoff can not be proceeded until
next dmap_done to release writeback buffer. This patch
initialize dmap_comp before wait4dmap to make sure
wait_for_completion is enforced.

CRs-fixed: 448168
Change-Id: I64f2ad599b18f9d8b346c41a55829c564fcced0b
Signed-off-by: Kuogee Hsieh <khsieh@codeaurora.org>
This commit is contained in:
Kuogee Hsieh 2013-02-01 12:19:47 -08:00 committed by Iliyan Malchev
parent 3cf124994d
commit 3a2cf75d6a
1 changed files with 3 additions and 1 deletions
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4
drivers/video/msm/mdp4_overlay_dsi_cmd.c
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@ -301,8 +301,10 @@ int mdp4_dsi_cmd_pipe_commit(int cndx, int wait)
spin_lock_irqsave(&vctrl->spin_lock, flags);
if (pipe->ov_blt_addr) {
/* Blt */
if (vctrl->blt_wait)
if (vctrl->blt_wait) {
INIT_COMPLETION(vctrl->dmap_comp);
need_dmap_wait = 1;
}
if (vctrl->ov_koff != vctrl->ov_done) {
INIT_COMPLETION(vctrl->ov_comp);
need_ov_wait = 1;