diff options
| -rw-r--r-- | drivers/video/fbdev/msm/mdss_mdp_overlay.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/drivers/video/fbdev/msm/mdss_mdp_overlay.c b/drivers/video/fbdev/msm/mdss_mdp_overlay.c index 5a30cfe6b549..5eb8d44903cc 100644 --- a/drivers/video/fbdev/msm/mdss_mdp_overlay.c +++ b/drivers/video/fbdev/msm/mdss_mdp_overlay.c @@ -357,9 +357,22 @@ static int __mdp_pipe_tune_perf(struct mdss_mdp_pipe *pipe) for (;;) { rc = mdss_mdp_perf_calc_pipe(pipe, &perf, NULL, true); - if (!rc && (perf.mdp_clk_rate <= mdata->max_mdp_clk_rate) && - !mdss_mdp_perf_bw_check_pipe(&perf, pipe)) - break; + if (!rc && (perf.mdp_clk_rate <= mdata->max_mdp_clk_rate)) { + rc = mdss_mdp_perf_bw_check_pipe(&perf, pipe); + if (!rc) { + break; + } else if ((rc == -E2BIG) && !pipe->vert_deci) { + /* + * if per pipe BW exceeds the limit and user + * has not requested decimation then return + * -E2BIG error back to user else try more + * decimation. + */ + pr_debug("pipe%d exceeded per pipe BW\n", + pipe->num); + return rc; + } + } /* * if decimation is available try to reduce minimum clock rate |