Re: [PATCH v1 1/2] drm/msm: enable msm irq after all initializations are done successfully at msm_drm_init()

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I will drop this patch since the problem had been fixed by Dmitry Baryshkov patch.

https://gitlab.freedesktop.org/drm/msm/-/commit/577e2a9dfc8fba7938aaf75db63fae7e328cc3cb



On 6/3/2022 2:28 PM, Kuogee Hsieh wrote:
At msm initialize phase, msm_drm_init() is called to initialize modules
sequentially. It will call msm_drm_uninit() to clean up initialized phase
if any module initialization return failed. This patch move msm_irq_install()
to the last step of msm_drm_init() after all modules are initialized successfully
so that no msm_irq_unistall() required at msm_drm_uninit() if any module
initialization failed happen at msm_drm_init().

Signed-off-by: Kuogee Hsieh <quic_khsieh@xxxxxxxxxxx>
---
  drivers/gpu/drm/msm/msm_drv.c | 29 ++++++-----------------------
  1 file changed, 6 insertions(+), 23 deletions(-)

diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c
index 6665c5a..ab42e9a 100644
--- a/drivers/gpu/drm/msm/msm_drv.c
+++ b/drivers/gpu/drm/msm/msm_drv.c
@@ -132,15 +132,6 @@ static int msm_irq_install(struct drm_device *dev, unsigned int irq)
  	return 0;
  }
-static void msm_irq_uninstall(struct drm_device *dev)
-{
-	struct msm_drm_private *priv = dev->dev_private;
-	struct msm_kms *kms = priv->kms;
-
-	kms->funcs->irq_uninstall(kms);
-	free_irq(kms->irq, dev);
-}
-
  struct msm_vblank_work {
  	struct work_struct work;
  	int crtc_id;
@@ -232,10 +223,6 @@ static int msm_drm_uninit(struct device *dev)
drm_mode_config_cleanup(ddev); - pm_runtime_get_sync(dev);
-	msm_irq_uninstall(ddev);
-	pm_runtime_put_sync(dev);
-
  	if (kms && kms->funcs)
  		kms->funcs->destroy(kms);
@@ -437,16 +424,6 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv)
  		goto err_msm_uninit;
  	}
- if (kms) {
-		pm_runtime_get_sync(dev);
-		ret = msm_irq_install(ddev, kms->irq);
-		pm_runtime_put_sync(dev);
-		if (ret < 0) {
-			DRM_DEV_ERROR(dev, "failed to install IRQ handler\n");
-			goto err_msm_uninit;
-		}
-	}
-
  	ret = drm_dev_register(ddev, 0);
  	if (ret)
  		goto err_msm_uninit;
@@ -467,6 +444,12 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv)
  	if (ret)
  		goto err_msm_uninit;
+ if (kms) {
+		pm_runtime_get_sync(dev);
+		msm_irq_install(ddev, kms->irq);
+		pm_runtime_put_sync(dev);
+	}
+
  	drm_kms_helper_poll_init(ddev);
return 0;



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