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/benchmarks/gem_blt.c b/benchmarks/gem_blt.c
index 181a5f12..3ed23003 100644
--- a/benchmarks/gem_blt.c
+++ b/benchmarks/gem_blt.c
@@ -178,6 +178,7 @@ static int run(int object, int batch, int count, int reps)
 	fd = drm_open_driver(DRIVER_INTEL);
 	handle = gem_create(fd, size);
 	buf = gem_mmap__cpu(fd, handle, 0, size, PROT_WRITE);
+	igt_assert(buf);
 
 	gen = intel_gen(intel_get_drm_devid(fd));
 	has_64bit_reloc = gen >= 8;