Re: [PATCH v2] drm/i915/selftests: Unwind hugepages to drop wakeref on error

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Reviewed-by: Nirmoy Das <nirmoy.das@xxxxxxxxx>

On 1/17/2023 1:32 PM, Nirmoy Das wrote:
From: Chris Wilson <chris.p.wilson@xxxxxxxxxxxxxxx>

Make sure that upon error after we have acquired the wakeref we do
release it again.

v2: add another missing "goto out_wf"(Andi).

Fixes: 027c38b4121e ("drm/i915/selftests: Grab the runtime pm in shrink_thp")
Cc: Andi Shyti <andi.shyti@xxxxxxxxxxxxxxx>
Reviewed-by: Matthew Auld <matthew.auld@xxxxxxxxx>
Reviewed-by: Andrzej Hajda <andrzej.hajda@xxxxxxxxx>
Signed-off-by: Chris Wilson <chris.p.wilson@xxxxxxxxxxxxxxx>
Signed-off-by: Nirmoy Das <nirmoy.das@xxxxxxxxx>
---
 drivers/gpu/drm/i915/gem/selftests/huge_pages.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
index c281b0ec9e05..defece0bcb81 100644
--- a/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
+++ b/drivers/gpu/drm/i915/gem/selftests/huge_pages.c
@@ -1855,7 +1855,7 @@ static int igt_shrink_thp(void *arg)
 			I915_SHRINK_ACTIVE);
 	i915_vma_unpin(vma);
 	if (err)
-		goto out_put;
+		goto out_wf;
 
 	/*
 	 * Now that the pages are *unpinned* shrinking should invoke
@@ -1871,19 +1871,19 @@ static int igt_shrink_thp(void *arg)
 		pr_err("unexpected pages mismatch, should_swap=%s\n",
 		       str_yes_no(should_swap));
 		err = -EINVAL;
-		goto out_put;
+		goto out_wf;
 	}
 
 	if (should_swap == (obj->mm.page_sizes.sg || obj->mm.page_sizes.phys)) {
 		pr_err("unexpected residual page-size bits, should_swap=%s\n",
 		       str_yes_no(should_swap));
 		err = -EINVAL;
-		goto out_put;
+		goto out_wf;
 	}
 
 	err = i915_vma_pin(vma, 0, 0, flags);
 	if (err)
-		goto out_put;
+		goto out_wf;
 
 	while (n--) {
 		err = cpu_check(obj, n, 0xdeadbeaf);

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