From: Ayan Halder <Ayan.Halder@arm.com>
To: Ayan Halder <Ayan.Halder@arm.com>,
Liviu Dudau <Liviu.Dudau@arm.com>,
Brian Starkey <Brian.Starkey@arm.com>,
"malidp@foss.arm.com" <malidp@foss.arm.com>,
"james qian wang (Arm Technology China)"
<james.qian.wang@arm.com>, "airlied@linux.ie" <airlied@linux.ie>,
"daniel@ffwll.ch" <daniel@ffwll.ch>,
"dri-devel@lists.freedesktop.org"
<dri-devel@lists.freedesktop.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Cc: nd <nd@arm.com>
Subject: [PATCH] drm/komeda: Reordered the komeda's de-init functions
Date: Tue, 20 Aug 2019 17:46:19 +0000 [thread overview]
Message-ID: <20190820174606.1133-1-ayan.halder@arm.com> (raw)
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 109c4d18e574 ("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
Signed-off-by: Ayan Kumar Halder <ayan.halder@arm.com>
---
.../gpu/drm/arm/display/komeda/komeda_kms.c | 20 +++++++++++++------
1 file changed, 14 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
index 89191a555c84..e219d1b67100 100644
--- a/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
+++ b/drivers/gpu/drm/arm/display/komeda/komeda_kms.c
@@ -13,6 +13,7 @@
#include <drm/drm_fb_helper.h>
#include <drm/drm_gem_cma_helper.h>
#include <drm/drm_gem_framebuffer_helper.h>
+#include <drm/drm_probe_helper.h>
#include <drm/drm_irq.h>
#include <drm/drm_vblank.h>
@@ -304,24 +305,30 @@ 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;
err = drm_dev_register(drm, 0);
if (err)
- goto cleanup_mode_config;
+ goto free_interrupts;
return kms;
-cleanup_mode_config:
+free_interrupts:
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);
@@ -332,12 +339,13 @@ void komeda_kms_detach(struct komeda_kms_dev *kms)
struct drm_device *drm = &kms->base;
struct komeda_dev *mdev = drm->dev_private;
+ drm_dev_unregister(drm);
+ drm_atomic_helper_shutdown(drm);
drm->irq_enabled = false;
mdev->funcs->disable_irq(mdev);
- drm_dev_unregister(drm);
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);
}
--
2.21.0
next reply other threads:[~2019-08-20 17:46 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-20 17:46 Ayan Halder [this message]
2019-08-23 10:42 ` [PATCH] drm/komeda: Reordered the komeda's de-init functions Mihail Atanassov
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