linux-kernel - [PATCH] drm/i915/selftests: Fix runtime PM imbalance on error

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Date:   Sun, 24 May 2020 10:08:32 +0800
From:   Dinghao Liu <dinghao.liu@....edu.cn>
To:     dinghao.liu@....edu.cn, kjlu@....edu
Cc:     Jani Nikula <jani.nikula@...ux.intel.com>,
        Joonas Lahtinen <joonas.lahtinen@...ux.intel.com>,
        Rodrigo Vivi <rodrigo.vivi@...el.com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Chris Wilson <chris@...is-wilson.co.uk>,
        Tvrtko Ursulin <tvrtko.ursulin@...el.com>,
        Matthew Auld <matthew.auld@...el.com>,
        Andi Shyti <andi.shyti@...el.com>,
        Mika Kuoppala <mika.kuoppala@...ux.intel.com>,
        Daniele Ceraolo Spurio <daniele.ceraolospurio@...el.com>,
        Abdiel Janulgue <abdiel.janulgue@...ux.intel.com>,
        intel-gfx@...ts.freedesktop.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] drm/i915/selftests: Fix runtime PM imbalance on error

When drm_dev_init() returns an error code, a pairing
runtime PM usage counter decrement is needed to keep
the counter balanced. For error paths after this call,
things are the same.

Signed-off-by: Dinghao Liu <dinghao.liu@....edu.cn>
---
 drivers/gpu/drm/i915/selftests/mock_gem_device.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/gpu/drm/i915/selftests/mock_gem_device.c b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
index 754d0eb6beaa..fdf01461acc6 100644
--- a/drivers/gpu/drm/i915/selftests/mock_gem_device.c
+++ b/drivers/gpu/drm/i915/selftests/mock_gem_device.c
@@ -200,6 +200,7 @@ struct drm_i915_private *mock_gem_device(void)
 	drm_mode_config_cleanup(&i915->drm);
 	drm_dev_fini(&i915->drm);
 put_device:
+	pm_runtime_put_noidle(&pdev->dev);
 	put_device(&pdev->dev);
 err:
 	return NULL;
-- 
2.17.1