| lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
|
Open Source and information security mailing list archives
| ||
|
Message-ID: <CAFqt6zYUT72e7CnUF9a3kg5ZjFcPjZViMNm687-FC_9PF5Oc7A@mail.gmail.com>
Date: Thu, 2 Aug 2018 21:21:02 +0530
From: Souptick Joarder <jrdr.linux@...il.com>
To: Marek Szyprowski <m.szyprowski@...sung.com>
Cc: Inki Dae <inki.dae@...sung.com>, jy0922.shim@...sung.com,
sw0312.kim@...sung.com, Kyungmin Park <kyungmin.park@...sung.com>,
airlied@...ux.ie, kgene@...nel.org, krzk@...nel.org,
Ajit Linux <ajitn.linux@...il.com>,
dri-devel@...ts.freedesktop.org,
linux-arm-kernel@...ts.infradead.org,
linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3] gpu/drm/exynos: Convert drm_atomic_helper_suspend/resume()
On Thu, Aug 2, 2018 at 7:08 PM, Marek Szyprowski
<m.szyprowski@...sung.com> wrote:
> Hi,
>
> On 2018-08-02 15:21, Souptick Joarder wrote:
>> convert drm_atomic_helper_suspend/resume() to use
>> drm_mode_config_helper_suspend/resume().
>>
>> exynos_drm_fbdev_suspend/resume can be removed
>> as drm_mode_config_helper_suspend/resume has
>> implement the same in generic way.
>>
>> Remove suspend_state from exynos_drm_private
>> struct as it is no more useful.
>>
>> Signed-off-by: Ajit Negi <ajitn.linux@...il.com>
>> Signed-off-by: Souptick Joarder <jrdr.linux@...il.com>
>> Tested-by: Marek Szyprowski <m.szyprowski@...sung.com>
>> ---
>> v2: Address Inki Dae's comment. Remove ret variable
>> from both suspend/resume function.
>>
>> v3: Tested by Marek. Updated the change log.
>>
>> drivers/gpu/drm/exynos/exynos_drm_drv.c | 26 ++------------------------
>> drivers/gpu/drm/exynos/exynos_drm_drv.h | 1 -
>> drivers/gpu/drm/exynos/exynos_drm_fbdev.c | 17 -----------------
>> drivers/gpu/drm/exynos/exynos_drm_fbdev.h | 10 ----------
>> 4 files changed, 2 insertions(+), 52 deletions(-)
>>
>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
>> index b599f74..d86dd81 100644
>> --- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
>> +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
>> @@ -149,37 +149,15 @@ static void exynos_drm_postclose(struct drm_device *dev, struct drm_file *file)
>> static int exynos_drm_suspend(struct device *dev)
>> {
>> struct drm_device *drm_dev = dev_get_drvdata(dev);
>> - struct exynos_drm_private *private;
>> -
>> - if (!drm_dev)
>> - return 0;
>> -
>> - private = drm_dev->dev_private;
>> -
>> - drm_kms_helper_poll_disable(drm_dev);
>> - exynos_drm_fbdev_suspend(drm_dev);
>> - private->suspend_state = drm_atomic_helper_suspend(drm_dev);
>> - if (IS_ERR(private->suspend_state)) {
>> - exynos_drm_fbdev_resume(drm_dev);
>> - drm_kms_helper_poll_enable(drm_dev);
>> - return PTR_ERR(private->suspend_state);
>> - }
>>
>> - return 0;
>> + return drm_mode_config_helper_suspend(drm_dev);
>> }
>>
>> static void exynos_drm_resume(struct device *dev)
>> {
>> struct drm_device *drm_dev = dev_get_drvdata(dev);
>> - struct exynos_drm_private *private;
>> -
>> - if (!drm_dev)
>> - return;
>>
>> - private = drm_dev->dev_private;
>> - drm_atomic_helper_resume(drm_dev, private->suspend_state);
>> - exynos_drm_fbdev_resume(drm_dev);
>> - drm_kms_helper_poll_enable(drm_dev);
>> + return drm_mode_config_helper_resume(drm_dev);
>
> exynos_drm_resume() now returns 'void', so to be strict with
> c standard, the return statement should not be used here.
But in struct dev_pm_ops, it is still defined as
int (*resume)(struct device *dev);
I think, we need to correct the return type of
exynos_drm_resume() to int.
Although I posted v4.
>
>> }
>>
>> static const struct dev_pm_ops exynos_drm_pm_ops = {
>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.h b/drivers/gpu/drm/exynos/exynos_drm_drv.h
>> index c737c4b..7349e7c 100644
>> --- a/drivers/gpu/drm/exynos/exynos_drm_drv.h
>> +++ b/drivers/gpu/drm/exynos/exynos_drm_drv.h
>> @@ -195,7 +195,6 @@ struct drm_exynos_file_private {
>> */
>> struct exynos_drm_private {
>> struct drm_fb_helper *fb_helper;
>> - struct drm_atomic_state *suspend_state;
>>
>> struct device *g2d_dev;
>> struct device *dma_dev;
>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
>> index 132dd52..918dd2c 100644
>> --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
>> +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.c
>> @@ -270,20 +270,3 @@ void exynos_drm_fbdev_fini(struct drm_device *dev)
>> private->fb_helper = NULL;
>> }
>>
>> -void exynos_drm_fbdev_suspend(struct drm_device *dev)
>> -{
>> - struct exynos_drm_private *private = dev->dev_private;
>> -
>> - console_lock();
>> - drm_fb_helper_set_suspend(private->fb_helper, 1);
>> - console_unlock();
>> -}
>> -
>> -void exynos_drm_fbdev_resume(struct drm_device *dev)
>> -{
>> - struct exynos_drm_private *private = dev->dev_private;
>> -
>> - console_lock();
>> - drm_fb_helper_set_suspend(private->fb_helper, 0);
>> - console_unlock();
>> -}
>> diff --git a/drivers/gpu/drm/exynos/exynos_drm_fbdev.h b/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
>> index b338472..6840b6a 100644
>> --- a/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
>> +++ b/drivers/gpu/drm/exynos/exynos_drm_fbdev.h
>> @@ -19,8 +19,6 @@
>>
>> int exynos_drm_fbdev_init(struct drm_device *dev);
>> void exynos_drm_fbdev_fini(struct drm_device *dev);
>> -void exynos_drm_fbdev_suspend(struct drm_device *drm);
>> -void exynos_drm_fbdev_resume(struct drm_device *drm);
>>
>> #else
>>
>> @@ -39,14 +37,6 @@ static inline void exynos_drm_fbdev_restore_mode(struct drm_device *dev)
>>
>> #define exynos_drm_output_poll_changed (NULL)
>>
>> -static inline void exynos_drm_fbdev_suspend(struct drm_device *drm)
>> -{
>> -}
>> -
>> -static inline void exynos_drm_fbdev_resume(struct drm_device *drm)
>> -{
>> -}
>> -
>> #endif
>>
>> #endif
>
> Best regards
> --
> Marek Szyprowski, PhD
> Samsung R&D Institute Poland
>
Powered by blists - more mailing lists