linux-kernel - [PATCH v3 2/8] drm/nouveau: Enable polling even if we have runtime PM

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Date:   Mon, 30 Jul 2018 20:39:47 -0400
From:   Lyude Paul <lyude@...hat.com>
To:     nouveau@...ts.freedesktop.org
Cc:     Lukas Wunner <lukas@...ner.de>,
        Peter Ujfalusi <peter.ujfalusi@...com>, stable@...r.kernel.org,
        Ben Skeggs <bskeggs@...hat.com>,
        David Airlie <airlied@...ux.ie>,
        dri-devel@...ts.freedesktop.org, linux-kernel@...r.kernel.org
Subject: [PATCH v3 2/8] drm/nouveau: Enable polling even if we have runtime PM

Having runtime PM makes no difference on whether or not we want polling,
and it's now safe to just enable polling unconditionally in drm_load()
thanks to d61a5c106351 ("drm/nouveau: Fix deadlock on runtime suspend")

Signed-off-by: Lyude Paul <lyude@...hat.com>
Cc: Lukas Wunner <lukas@...ner.de>
Cc: Peter Ujfalusi <peter.ujfalusi@...com>
Cc: stable@...r.kernel.org
---
 drivers/gpu/drm/nouveau/nouveau_drm.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/gpu/drm/nouveau/nouveau_drm.c b/drivers/gpu/drm/nouveau/nouveau_drm.c
index 5fdc1fbe2ee5..ee2546db09c9 100644
--- a/drivers/gpu/drm/nouveau/nouveau_drm.c
+++ b/drivers/gpu/drm/nouveau/nouveau_drm.c
@@ -592,10 +592,11 @@ nouveau_drm_load(struct drm_device *dev, unsigned long flags)
 		pm_runtime_allow(dev->dev);
 		pm_runtime_mark_last_busy(dev->dev);
 		pm_runtime_put(dev->dev);
-	} else {
-		/* enable polling for external displays */
-		drm_kms_helper_poll_enable(dev);
 	}
+
+	/* enable polling for connectors without hpd */
+	drm_kms_helper_poll_enable(dev);
+
 	return 0;
 
 fail_dispinit:
-- 
2.17.1