Sprinkle igt_assert(ptr) after gem_mmap__{cpu,gtt,wc}

Do the following
 ptr = gem_mmap__{cpu,gtt,wc}()
+igt_assert(ptr);

whenever the code doesn't handle the NULL ptr in any kind of
specific way.

Makes it easier to move the assert into gem_mmap__{cpu,gtt,wc}() itself.

Mostly done with coccinelle, with some manual cleanups:
@@
identifier I;
@@
<... when != igt_assert(I)
     when != igt_require(I)
     when != igt_require_f(I, ...)
     when != I != NULL
     when != I == NULL
(
  I = gem_mmap__gtt(...);
+ igt_assert(I);
|
  I = gem_mmap__cpu(...);
+ igt_assert(I);
|
  I = gem_mmap__wc(...);
+ igt_assert(I);
)
...>

Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Stochastically-reviwewed-by: Chris Wilson <chris@chris-wilson.co.uk>

1 files changed, 1 insertions, 0 deletions

diff --git a/tests/gem_tiled_swapping.c b/tests/gem_tiled_swapping.c
index b50fa7fb..a66523ba 100644
--- a/tests/gem_tiled_swapping.c
+++ b/tests/gem_tiled_swapping.c
@@ -110,6 +110,7 @@ check_bo(int fd, uint32_t handle)
 	int j;
 
 	data = gem_mmap__gtt(fd, handle, LINEAR_DWORDS, PROT_READ);
+	igt_assert(data);
 	gem_set_domain(fd, handle, I915_GEM_DOMAIN_GTT, 0);
 	j = rand() % (WIDTH * HEIGHT);
 	igt_assert_f(data[j] == j, "mismatch at %i: %i\n", j, data[j]);