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drm/i915/dpll: replace BUG_ON() with drm_WARN_ON()

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Avoid BUG_ON(). Actually check the dpll count and bail out loudly with
drm_WARN_ON() from the loop before overflowing
i915->dpll.shared_dplls[].

v2: Rebase

Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20220830093411.1511040-2-jani.nikula@intel.com
This commit is contained in:
Jani Nikula 2022-08-30 12:34:08 +03:00
parent 99f37216b3
commit b801a98f81
1 changed files with 4 additions and 2 deletions
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6
drivers/gpu/drm/i915/display/intel_dpll_mgr.c
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@ -4199,6 +4199,10 @@ void intel_shared_dpll_init(struct drm_i915_private *dev_priv)
dpll_info = dpll_mgr->dpll_info;
for (i = 0; dpll_info[i].name; i++) {
if (drm_WARN_ON(&dev_priv->drm,
i >= ARRAY_SIZE(dev_priv->display.dpll.shared_dplls)))
break;
drm_WARN_ON(&dev_priv->drm, i != dpll_info[i].id);
dev_priv->display.dpll.shared_dplls[i].info = &dpll_info[i];
}
@ -4206,8 +4210,6 @@ void intel_shared_dpll_init(struct drm_i915_private *dev_priv)
dev_priv->display.dpll.mgr = dpll_mgr;
dev_priv->display.dpll.num_shared_dpll = i;
mutex_init(&dev_priv->display.dpll.lock);
BUG_ON(dev_priv->display.dpll.num_shared_dpll > I915_NUM_PLLS);
}
/**