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drm/selftests/test-drm_mm: Mark 'hole_end' as always_unused

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In the macro drm_mm_for_each_hole() 'hole_end' is provided as a
container for 'hole_start + pos->hole_size', but is not utilised in
this use-case.  We cannot simply delete the variable, so here we tell
the compiler that we're intentionally discarding the read value.

Fixes the following W=1 kernel build warning(s):

 drivers/gpu/drm/selftests/test-drm_mm.c: In function ‘assert_no_holes’:
 drivers/gpu/drm/selftests/test-drm_mm.c:57:18: warning: variable ‘hole_end’ set but not used [-Wunused-but-set-variable]

Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: "Christian König" <christian.koenig@amd.com>
Cc: Nirmoy Das <nirmoy.aiemd@gmail.com>
Cc: dri-devel@lists.freedesktop.org
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20201116174112.1833368-28-lee.jones@linaro.org
This commit is contained in:
Lee Jones 2020-11-16 17:40:57 +00:00 committed by Daniel Vetter
parent f8cd9d9532
commit 7df5428975
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/selftests/test-drm_mm.c
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@ -54,7 +54,7 @@ static int igt_sanitycheck(void *ignored)
static bool assert_no_holes(const struct drm_mm *mm)
{
struct drm_mm_node *hole;
u64 hole_start, hole_end;
u64 hole_start, __always_unused hole_end;
unsigned long count;
count = 0;