Quieten valgrind

Clear all the ioctl structs to zero before use as valgrind does not our
ioctls and so complains about undefined bytes being passed to syscalls.

Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 2 insertions, 1 deletions

diff --git a/lib/drmtest.c b/lib/drmtest.c
index b3c3fa6b..7be2e406 100644
--- a/lib/drmtest.c
+++ b/lib/drmtest.c
@@ -77,8 +77,9 @@ static int
 is_intel(int fd)
 {
 	struct drm_i915_getparam gp;
-	int devid;
+	int devid = 0;
 
+	memset(&gp, 0, sizeof(gp));
 	gp.param = I915_PARAM_CHIPSET_ID;
 	gp.value = &devid;