lkml.org 
[lkml]   [2020]   [Dec]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH drm/hisilicon v2 2/3] drm/irq: Add the new api to install irq
From
Date


Am 02.12.20 um 10:26 schrieb Tian Tao:
> Add new api devm_drm_irq_install() to register interrupts,
> no need to call drm_irq_uninstall() when the drm module is removed.
>
> Signed-off-by: Tian Tao <tiantao6@hisilicon.com>

Reviewed-by: Thomas Zimmermann <tzimmermann@suse.de>

> ---
> drivers/gpu/drm/drm_irq.c | 32 ++++++++++++++++++++++++++++++++
> include/drm/drm_irq.h | 2 +-
> 2 files changed, 33 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c
> index 09d6e9e..803af4b 100644
> --- a/drivers/gpu/drm/drm_irq.c
> +++ b/drivers/gpu/drm/drm_irq.c
> @@ -214,6 +214,38 @@ int drm_irq_uninstall(struct drm_device *dev)
> }
> EXPORT_SYMBOL(drm_irq_uninstall);
>
> +static void devm_drm_irq_uninstall(void *data)
> +{
> + drm_irq_uninstall(data);
> +}
> +
> +/**
> + * devm_drm_irq_install - install IRQ handler
> + * @dev: DRM device
> + * @irq: IRQ number to install the handler for
> + *
> + * devm_drm_irq_install is a help function of drm_irq_install.
> + *
> + * if the driver uses devm_drm_irq_install, there is no need
> + * to call drm_irq_uninstall when the drm module get unloaded,
> + * as this will done automagically.
> + *
> + * Returns:
> + * Zero on success or a negative error code on failure.
> + */
> +int devm_drm_irq_install(struct drm_device *dev, int irq)
> +{
> + int ret;
> +
> + ret = drm_irq_install(dev, irq);
> + if (ret)
> + return ret;
> +
> + return devm_add_action_or_reset(dev->dev,
> + devm_drm_irq_uninstall, dev);
> +}
> +EXPORT_SYMBOL(devm_drm_irq_install);
> +
> #if IS_ENABLED(CONFIG_DRM_LEGACY)
> int drm_legacy_irq_control(struct drm_device *dev, void *data,
> struct drm_file *file_priv)
> diff --git a/include/drm/drm_irq.h b/include/drm/drm_irq.h
> index d77f6e6..631b22f 100644
> --- a/include/drm/drm_irq.h
> +++ b/include/drm/drm_irq.h
> @@ -28,5 +28,5 @@ struct drm_device;
>
> int drm_irq_install(struct drm_device *dev, int irq);
> int drm_irq_uninstall(struct drm_device *dev);
> -
> +int devm_drm_irq_install(struct drm_device *dev, int irq);
> #endif
>

--
Thomas Zimmermann
Graphics Driver Developer
SUSE Software Solutions Germany GmbH
Maxfeldstr. 5, 90409 Nürnberg, Germany
(HRB 36809, AG Nürnberg)
Geschäftsführer: Felix Imendörffer

[unhandled content-type:application/pgp-signature]
\
 
 \ /
  Last update: 2020-12-02 11:23    [W:0.046 / U:0.080 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site