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drm/komeda: Reordered the komeda's de-init functions 

The de-init routine should be doing the following in order:-
1. Unregister the drm device
2. Shut down the crtcs - failing to do this might cause a connector leakage
See the 'commit 109c4d18e5 ("drm/arm/malidp: Ensure that the crtcs are
shutdown before removing any encoder/connector")'
3. Disable the interrupts
4. Unbind the components
5. Free up DRM mode_config info

Changes from v1:-
1. Re-ordered the header files inclusion
2. Rebased on top of the latest drm-misc-fixes

Signed-off-by:. Ayan Kumar Halder <Ayan.Halder@arm.com>
Reviewed-by: Mihail Atanassov <mihail.atanassov@arm.com>
Reviewed-by: James Qian Wang (Arm Technology China) <james.qian.wang@arm.com>
Link: https://patchwork.freedesktop.org/patch/327606/
This commit is contained in:
Ayan Kumar Halder 2019-08-28 15:00:19 +00:00 committed by Ayan kumar halder
parent 51a44a28ee
commit 6978bce054
1 changed files with 15 additions and 8 deletions
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23
drivers/gpu/drm/arm/display/komeda/komeda_kms.c
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@ -14,8 +14,8 @@
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
#include <drm/drm_irq.h>
#include <drm/drm_vblank.h>
#include <drm/drm_probe_helper.h>
#include <drm/drm_vblank.h>
#include "komeda_dev.h"
#include "komeda_framebuffer.h"
@ -306,11 +306,11 @@ struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev)
komeda_kms_irq_handler, IRQF_SHARED,
drm->driver->name, drm);
if (err)
goto cleanup_mode_config;
goto free_component_binding;
err = mdev->funcs->enable_irq(mdev);
if (err)
goto cleanup_mode_config;
goto free_component_binding;
drm->irq_enabled = true;
@ -318,15 +318,21 @@ struct komeda_kms_dev *komeda_kms_attach(struct komeda_dev *mdev)
err = drm_dev_register(drm, 0);
if (err)
goto cleanup_mode_config;
goto free_interrupts;
return kms;
cleanup_mode_config:
free_interrupts:
drm_kms_helper_poll_fini(drm);
drm->irq_enabled = false;
mdev->funcs->disable_irq(mdev);
free_component_binding:
component_unbind_all(mdev->dev, drm);
cleanup_mode_config:
drm_mode_config_cleanup(drm);
komeda_kms_cleanup_private_objs(kms);
drm->dev_private = NULL;
drm_dev_put(drm);
free_kms:
kfree(kms);
return ERR_PTR(err);
@ -337,13 +343,14 @@ 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_kms_helper_poll_fini(drm);
drm_atomic_helper_shutdown(drm);
drm->irq_enabled = false;
mdev->funcs->disable_irq(mdev);
component_unbind_all(mdev->dev, drm);
komeda_kms_cleanup_private_objs(kms);
drm_mode_config_cleanup(drm);
komeda_kms_cleanup_private_objs(kms);
drm->dev_private = NULL;
drm_dev_put(drm);
}