Commit 604ef734 authored by Andrzej Hajda's avatar Andrzej Hajda Committed by Daniel Vetter

drm/i915: fix handling gen8_emit_flush_coherentl3_wa result

The function can return negative value.

The problem has been detected using proposed semantic patch
scripts/coccinelle/tests/unsigned_lesser_than_zero.cocci [1].

[1]: http://permalink.gmane.org/gmane.linux.kernel/2038576Signed-off-by: default avatarAndrzej Hajda <a.hajda@samsung.com>
Reviewed-by: default avatarJani Nikula <jani.nikula@intel.com>
Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
parent 5389e916
...@@ -1254,9 +1254,10 @@ static int gen8_init_indirectctx_bb(struct intel_engine_cs *ring, ...@@ -1254,9 +1254,10 @@ static int gen8_init_indirectctx_bb(struct intel_engine_cs *ring,
/* WaFlushCoherentL3CacheLinesAtContextSwitch:bdw */ /* WaFlushCoherentL3CacheLinesAtContextSwitch:bdw */
if (IS_BROADWELL(ring->dev)) { if (IS_BROADWELL(ring->dev)) {
index = gen8_emit_flush_coherentl3_wa(ring, batch, index); int rc = gen8_emit_flush_coherentl3_wa(ring, batch, index);
if (index < 0) if (rc < 0)
return index; return rc;
index = rc;
} }
/* WaClearSlmSpaceAtContextSwitch:bdw,chv */ /* WaClearSlmSpaceAtContextSwitch:bdw,chv */
......
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