The "num_dtd" variable is the number of elements in the
generic_dtd->dtd[] array so the > needs to be >= to prevent reading one
element beyond the end of the array.
Fixes: 33ef6d4fd8df ("drm/i915/vbt: Handle generic DTD block")
Signed-off-by: Dan Carpenter <dan.carpen...@oracle.com>
---
drivers/gpu/drm/i915/display/intel_bios.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/display/intel_bios.c
b/drivers/gpu/drm/i915/display/intel_bios.c
index 1aeecdd02293..d1e27ee86e53 100644
--- a/drivers/gpu/drm/i915/display/intel_bios.c
+++ b/drivers/gpu/drm/i915/display/intel_bios.c
@@ -338,7 +338,7 @@ parse_generic_dtd(struct drm_i915_private *dev_priv,
num_dtd = (get_blocksize(generic_dtd) -
sizeof(struct bdb_generic_dtd)) / generic_dtd->gdtd_size;
- if (dev_priv->vbt.panel_type > num_dtd) {
+ if (dev_priv->vbt.panel_type >= num_dtd) {
DRM_ERROR("Panel type %d not found in table of %d DTD's\n",
dev_priv->vbt.panel_type, num_dtd);
return;
--
2.11.0
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