In general, the compiler should not be able to detect if we do any
passes through the test loops:
In file included from drivers/gpu/drm/i915/i915_gem.c:5029:
drivers/gpu/drm/i915/selftests/i915_gem_coherency.c: In function
'igt_gem_coherency':
drivers/gpu/drm/i915/selftests/i915_gem_coherency.c:274: error: 'err'
may be used uninitialized in this function
Reported-by: kbuild test robot <[email protected]
Signed-off-by: Chris Wilson <[email protected]>
---
drivers/gpu/drm/i915/selftests/i915_gem_coherency.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/i915/selftests/i915_gem_coherency.c
b/drivers/gpu/drm/i915/selftests/i915_gem_coherency.c
index 483cbe02d983..26dc8079f399 100644
--- a/drivers/gpu/drm/i915/selftests/i915_gem_coherency.c
+++ b/drivers/gpu/drm/i915/selftests/i915_gem_coherency.c
@@ -271,7 +271,7 @@ static int igt_gem_coherency(void *arg)
struct drm_i915_gem_object *obj;
unsigned long count, n;
u32 *offsets, *values;
- int err;
+ int err = 0;
/* We repeatedly write, overwrite and read from a sequence of
* cachelines in order to try and detect incoherency (unflushed writes
--
2.11.0
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