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drm/i915: Don't display nonsensical values in i915_ddb_info on gen < 9

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When playing around with debugfs and a HSW machine I noticed that we
were displaying some garbled value in i915_ddb_info. This debugfs file
is only meaningful for gen9+, so don't display anything on earlier
platforms.

Signed-off-by: Damien Lespiau <damien.lespiau@intel.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
Damien Lespiau 2014-12-03 17:33:24 +00:00 committed by Daniel Vetter
parent f763566992
commit 2fcffe195e
1 changed files with 3 additions and 0 deletions
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drivers/gpu/drm/i915/i915_debugfs.c
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@ -2743,6 +2743,9 @@ static int i915_ddb_info(struct seq_file *m, void *unused)
enum pipe pipe;
int plane;
if (INTEL_INFO(dev)->gen < 9)
return 0;
drm_modeset_lock_all(dev);
ddb = &dev_priv->wm.skl_hw.ddb;