On Tue, Nov 03, 2020 at 10:10:41AM +0800, Tian Tao wrote:
> Add new api devm_drm_irq_install() to register interrupts,
> no need to call drm_irq_uninstall() when the drm module is removed.
>
> v2:
> fixed the wrong parameter.
>
> Signed-off-by: Tian Tao <tiantao6@xxxxxxxxxxxxx>
> ---
> drivers/gpu/drm/drm_drv.c | 23 +++++++++++++++++++++++
> include/drm/drm_drv.h | 3 ++-
> 2 files changed, 25 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
> index cd162d4..0fe5243 100644
> --- a/drivers/gpu/drm/drm_drv.c
> +++ b/drivers/gpu/drm/drm_drv.c
> @@ -39,6 +39,7 @@
> #include <drm/drm_color_mgmt.h>
> #include <drm/drm_drv.h>
> #include <drm/drm_file.h>
> +#include <drm/drm_irq.h>
> #include <drm/drm_managed.h>
> #include <drm/drm_mode_object.h>
> #include <drm/drm_print.h>
> @@ -678,6 +679,28 @@ static int devm_drm_dev_init(struct device *parent,
> return ret;
> }
>
> +static void devm_drm_dev_irq_uninstall(void *data)
> +{
> + drm_irq_uninstall(data);
> +}
> +
> +int devm_drm_irq_install(struct device *parent,
parent argument should not be needed, we have drm_device->dev. If that
doesn't work, then don't use the drm irq helpers, they're optional (and
there's already devm versions of the core irq functions).
Just a detail aside from all the other things alreay mentioned.
-Daniel
> + struct drm_device *dev, int irq)
> +{
> + int ret;
> +
> + ret = drm_irq_install(dev, irq);
> + if (ret)
> + return ret;
> +
> + ret = devm_add_action(parent, devm_drm_dev_irq_uninstall, dev);
> + if (ret)
> + devm_drm_dev_irq_uninstall(dev);
> +
> + return ret;
> +}
> +EXPORT_SYMBOL(devm_drm_irq_install);
> +
> void *__devm_drm_dev_alloc(struct device *parent, struct drm_driver *driver,
> size_t size, size_t offset)
> {
> diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h
> index 0230762..fec1776 100644
> --- a/include/drm/drm_drv.h
> +++ b/include/drm/drm_drv.h
> @@ -513,7 +513,8 @@ struct drm_driver {
>
> void *__devm_drm_dev_alloc(struct device *parent, struct drm_driver *driver,
> size_t size, size_t offset);
> -
> +int devm_drm_irq_install(struct device *parent, struct drm_device *dev,
> + int irq);
> /**
> * devm_drm_dev_alloc - Resource managed allocation of a &drm_device instance
> * @parent: Parent device object
> --
> 2.7.4
>
--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch
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