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drm/i915: Silence compiler warning for seltests/i915_gem_coherency

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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 <fengguang.wu@intel.com>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>
Link: http://patchwork.freedesktop.org/patch/msgid/20170214143509.15719-1-chris@chris-wilson.co.uk
Reviewed-by: Matthew Auld <matthew.auld@intel.com>
This commit is contained in:
Chris Wilson 2017-02-14 14:35:09 +00:00
parent 72affdf972
commit b8f2169db9
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/i915/selftests/i915_gem_coherency.c
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@ -272,7 +272,7 @@ static int igt_gem_coherency(void *arg)
struct drm_i915_gem_object *obj; struct drm_i915_gem_object *obj;
unsigned long count, n; unsigned long count, n;
u32 *offsets, *values; u32 *offsets, *values;
int err; int err = 0;
/* We repeatedly write, overwrite and read from a sequence of /* We repeatedly write, overwrite and read from a sequence of
* cachelines in order to try and detect incoherency (unflushed writes * cachelines in order to try and detect incoherency (unflushed writes