diff options
Diffstat (limited to 'drivers/gpu')
| -rw-r--r-- | drivers/gpu/drm/i915/intel_display.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/gpu/drm/i915/intel_display.c b/drivers/gpu/drm/i915/intel_display.c index b040bd43bfd7..43b4281daf25 100644 --- a/drivers/gpu/drm/i915/intel_display.c +++ b/drivers/gpu/drm/i915/intel_display.c @@ -1793,8 +1793,11 @@ static void intel_enable_pipe(struct intel_crtc *crtc) reg = PIPECONF(cpu_transcoder); val = I915_READ(reg); - if (val & PIPECONF_ENABLE) + if (val & PIPECONF_ENABLE) { + WARN_ON(!(pipe == PIPE_A && + dev_priv->quirks & QUIRK_PIPEA_FORCE)); return; + } I915_WRITE(reg, val | PIPECONF_ENABLE); POSTING_READ(reg); |