linux-kernel - [Patch v3 ] drm/msm/dpu: Correct dpu destroy and disable order

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Date:   Mon, 19 Nov 2018 11:55:38 +0530
From:   Jayant Shekhar <jshekhar@...eaurora.org>
To:     dri-devel@...ts.freedesktop.org, linux-arm-msm@...r.kernel.org,
        freedreno@...ts.freedesktop.org, devicetree@...r.kernel.org
Cc:     Jayant Shekhar <jshekhar@...eaurora.org>,
        linux-kernel@...r.kernel.org, robdclark@...il.com,
        seanpaul@...omium.org, hoegsberg@...omium.org,
        abhinavk@...eaurora.org, jsanka@...eaurora.org,
        chandanu@...eaurora.org, nganji@...eaurora.org
Subject: [Patch v3 ] drm/msm/dpu: Correct dpu destroy and disable order

In case of msm drm bind failure, pm runtime put sync
is called from dsi driver which issues an asynchronous
put on mdss device. Subsequently when dpu_mdss_destroy
is triggered the change will make sure to put the mdss
device in suspend and clearing pending work if not
scheduled.

Changes in v2:
   - Removed double spacings [Jeykumar]

Changes in v3:
   - Fix clock on issue during bootup [Rajendra]

Signed-off-by: Jayant Shekhar <jshekhar@...eaurora.org>
---
 drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
index fd9c893..df8127b 100644
--- a/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
+++ b/drivers/gpu/drm/msm/disp/dpu1/dpu_mdss.c
@@ -156,18 +156,16 @@ static void dpu_mdss_destroy(struct drm_device *dev)
 	struct dpu_mdss *dpu_mdss = to_dpu_mdss(priv->mdss);
 	struct dss_module_power *mp = &dpu_mdss->mp;
 
+	pm_runtime_suspend(dev->dev);
+	pm_runtime_disable(dev->dev);
 	_dpu_mdss_irq_domain_fini(dpu_mdss);
-
 	free_irq(platform_get_irq(pdev, 0), dpu_mdss);
-
 	msm_dss_put_clk(mp->clk_config, mp->num_clk);
 	devm_kfree(&pdev->dev, mp->clk_config);
 
 	if (dpu_mdss->mmio)
 		devm_iounmap(&pdev->dev, dpu_mdss->mmio);
 	dpu_mdss->mmio = NULL;
-
-	pm_runtime_disable(dev->dev);
 	priv->mdss = NULL;
 }
 
-- 
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