[PATCH 2/2] drm/i915: Switch a couple of BUG_ONs in the cmdparser over to DRM_ERROR

[Chris Wilson]

No need to break module and system loading due to a programming bug.
Remove the BUG_ON and replace with a gentler DRM_ERROR_ON and error
return.

Signed-off-by: Chris Wilson <chris at chris-wilson.co.uk>
---
 drivers/gpu/drm/i915/i915_cmd_parser.c | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/i915_cmd_parser.c b/drivers/gpu/drm/i915/i915_cmd_parser.c
index fd9abe6e0ab1..dcd096536119 100644
--- a/drivers/gpu/drm/i915/i915_cmd_parser.c
+++ b/drivers/gpu/drm/i915/i915_cmd_parser.c
@@ -738,11 +738,16 @@ int i915_cmd_parser_init_ring(struct intel_engine_cs *ring)
 	default:
 		DRM_ERROR("CMD: cmd_parser_init with unknown ring: %d\n",
 			  ring->id);
-		BUG();
+		return -ENODEV;
 	}
 
-	BUG_ON(!validate_cmds_sorted(ring, cmd_tables, cmd_table_count));
-	BUG_ON(!validate_regs_sorted(ring));
+	if (DRM_ERROR_ON(!validate_cmds_sorted(ring, cmd_tables, cmd_table_count),
+			 "command parser table is not sorted - required for bisetion searching\n"))
+		return -ENODEV;
+
+	if (DRM_ERROR_ON(!validate_regs_sorted(ring),
+			 "register lists are not sorted - required for bisection searching\n"))
+		return -ENODEV;
 
 	WARN_ON(!hash_empty(ring->cmd_hash));
 
-- 
2.4.6