diff options
Diffstat (limited to 'drivers/gpu/drm/i915')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index baaaeaac7f2..132314e2bf2 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -2745,8 +2745,14 @@ static unsigned long intel_calculate_wm(unsigned long clock_in_khz, /* Don't promote wm_size to unsigned... */ if (wm_size > (long)wm->max_wm) wm_size = wm->max_wm; - if (wm_size <= 0) + if (wm_size <= 0) { wm_size = wm->default_wm; + DRM_ERROR("Insufficient FIFO for plane, expect flickering:" + " entries required = %ld, available = %lu.\n", + entries_required + wm->guard_size, + wm->fifo_size); + } + return wm_size; } |