One needs to set "(struct drm_device *)->irq_enabled = true" to signal drm core
to enable vblank interrupts after the hardware has been initialized.
Correspondingly, one needs to disable vblank interrupts by setting
"(struct drm_device *)->irq_enabled = false" at the beginning of the
de-initializing routine.
Signed-off-by: Ayan Kumar halder <ayan.hal...@arm.com>
---
drivers/gpu/drm/arm/display/komeda/komeda_kms.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
index 7b5cde14e3ba..b4fd8ee0d05f 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
@@ -204,6 +204,8 @@ struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev
*mdev)
if (err)
goto uninstall_irq;
+ drm->irq_enabled = true;
+
err = drm_dev_register(drm, 0);
if (err)
goto uninstall_irq;
@@ -211,6 +213,7 @@ struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev
*mdev)
return kms;
uninstall_irq:
+ drm->irq_enabled = false;
drm_irq_uninstall(drm);
cleanup_mode_config:
drm_mode_config_cleanup(drm);
@@ -225,6 +228,7 @@ void komeda_kms_detach(struct komeda_kms_dev *kms)
struct drm_device *drm = &kms->base;
struct komeda_dev *mdev = drm->dev_private;
+ drm->irq_enabled = false;
mdev->funcs->disable_irq(mdev);
drm_dev_unregister(drm);
drm_irq_uninstall(drm);
--
2.21.0
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