Re: [Patch v3Â] drm/msm/dpu: Correct dpu destroy and disable order

From: Rajendra Nayak
Date: Mon Nov 19 2018 - 03:32:14 EST



On 11/19/2018 11:55 AM, Jayant Shekhar wrote:
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@xxxxxxxxxxxxxx>

So I no longer see the clock usecount mismatch with this patch now,
that I had earlier reported with the v2.

Tested-by: Rajendra Nayak <rnayak@xxxxxxxxxxxxxx>

---
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;
}