diff options
| author |   Tian Tao <tiantao6@hisilicon.com> | 2020-12-02 17:26:51 +0800 |
|---|---|---|
| committer | Tian Tao <tiantao6@hisilicon.com> | 2020-12-03 03:57:15 -0500 |
| commit | d96bc380a50f1e89769d38dd9c5739be3cb014b2 (patch) | |
| tree | e8fe3cddfba54821e44e069a0988ae04550f6613 /drivers | |
| parent | drm/hisilicon: Code refactoring for hibmc_drm_drv (diff) | |
| download | linux-dev-d96bc380a50f1e89769d38dd9c5739be3cb014b2.tar.xz linux-dev-d96bc380a50f1e89769d38dd9c5739be3cb014b2.zip | |
drm/irq: Add the new api to install irq
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>
Link: https://patchwork.freedesktop.org/patch/msgid/1606901212-8214-3-git-send-email-tiantao6@hisilicon.com
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/gpu/drm/drm_irq.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/drivers/gpu/drm/drm_irq.c b/drivers/gpu/drm/drm_irq.c index 09d6e9e2e075..803af4bbd214 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) |