diff options
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_dsi_host.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/video/fbdev/msm/mdss_dsi_host.c b/drivers/video/fbdev/msm/mdss_dsi_host.c index 007272dabae2..f0fb791a7b8d 100644 --- a/drivers/video/fbdev/msm/mdss_dsi_host.c +++ b/drivers/video/fbdev/msm/mdss_dsi_host.c @@ -165,7 +165,14 @@ void mdss_dsi_clk_req(struct mdss_dsi_ctrl_pdata *ctrl, MDSS_XLOG(ctrl->ndx, enable, ctrl->mdp_busy, current->pid, client); - if (enable == 0) { + /* + * ensure that before going into ecg or turning + * off the clocks, cmd_mdp_busy is not true. During a + * race condition, clocks are turned off and so the + * isr for cmd_mdp_busy does not get cleared in hw. + */ + if (enable == MDSS_DSI_CLK_OFF || + enable == MDSS_DSI_CLK_EARLY_GATE) { /* need wait before disable */ mutex_lock(&ctrl->cmd_mutex); mdss_dsi_cmd_mdp_busy(ctrl); |