Re: [PATCH v2] drm/i915/selftests: Careful not to flush hang_fini on error setups

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On 29/07/2019 09:59, Chris Wilson wrote:
Smatch spotted that we test at the start of hang_fini for a valid (h->gt
is only set after a request is created) but then used it regardless
later on.

v2: Alternatively, we do not need to check as we now always prime h->gt
in hang_init()

Fixes: cb823ed9915b ("drm/i915/gt: Use intel_gt as the primary object for handling resets")

Will the fixes tag cause some unwanted backporting?

But for the change itself:

Reviewed-by: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>

Regards,

Tvrtko

Signed-off-by: Chris Wilson <chris@xxxxxxxxxxxxxxxxxx>
Cc: Tvrtko Ursulin <tvrtko.ursulin@xxxxxxxxx>
Cc: Daniele Ceraolo Spurio <daniele.ceraolospurio@xxxxxxxxx>
---
  drivers/gpu/drm/i915/gt/selftest_hangcheck.c | 4 +---
  1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
index e2fa38a1ff0f..4484b4447db1 100644
--- a/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
+++ b/drivers/gpu/drm/i915/gt/selftest_hangcheck.c
@@ -272,9 +272,7 @@ static u32 hws_seqno(const struct hang *h, const struct i915_request *rq)
  static void hang_fini(struct hang *h)
  {
  	*h->batch = MI_BATCH_BUFFER_END;
-
-	if (h->gt)
-		intel_gt_chipset_flush(h->gt);
+	intel_gt_chipset_flush(h->gt);
i915_gem_object_unpin_map(h->obj);
  	i915_gem_object_put(h->obj);

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