From: Daniel Vetter Date: Thu, 2 May 2019 13:56:03 +0000 (+0200) Subject: drm: Some ocd in drm_file.c X-Git-Url: http://git.lede-project.org./?a=commitdiff_plain;h=094aa54f0f9e9185babebf95745d71b07a84321c;p=openwrt%2Fstaging%2Fblogic.git drm: Some ocd in drm_file.c Move the open helper around to avoid the forward decl, and give drm_setup a drm_legacy_ prefix since it's all legacy stuff in there. v2: Move drm_legacy_setup into drm_legacy_misc.c (Chris). The counterpart in the form of drm_legacy_dev_reinit is there already too, plus it fits perfectly into Dave's work of making DRIVER_LEGACY code compile-time optional. Cc: Chris Wilson Reviewed-by: Chris Wilson Signed-off-by: Daniel Vetter Link: https://patchwork.freedesktop.org/patch/msgid/20190502135603.20413-1-daniel.vetter@ffwll.ch --- diff --git a/drivers/gpu/drm/drm_file.c b/drivers/gpu/drm/drm_file.c index 233f114d2186..075a7766bb79 100644 --- a/drivers/gpu/drm/drm_file.c +++ b/drivers/gpu/drm/drm_file.c @@ -100,8 +100,6 @@ DEFINE_MUTEX(drm_global_mutex); * :ref:`IOCTL support in the userland interfaces chapter`. */ -static int drm_open_helper(struct file *filp, struct drm_minor *minor); - /** * drm_file_alloc - allocate file context * @minor: minor to allocate on @@ -273,76 +271,6 @@ static void drm_close_helper(struct file *filp) drm_file_free(file_priv); } -static int drm_setup(struct drm_device * dev) -{ - int ret; - - if (dev->driver->firstopen && - drm_core_check_feature(dev, DRIVER_LEGACY)) { - ret = dev->driver->firstopen(dev); - if (ret != 0) - return ret; - } - - ret = drm_legacy_dma_setup(dev); - if (ret < 0) - return ret; - - - DRM_DEBUG("\n"); - return 0; -} - -/** - * drm_open - open method for DRM file - * @inode: device inode - * @filp: file pointer. - * - * This function must be used by drivers as their &file_operations.open method. - * It looks up the correct DRM device and instantiates all the per-file - * resources for it. It also calls the &drm_driver.open driver callback. - * - * RETURNS: - * - * 0 on success or negative errno value on falure. - */ -int drm_open(struct inode *inode, struct file *filp) -{ - struct drm_device *dev; - struct drm_minor *minor; - int retcode; - int need_setup = 0; - - minor = drm_minor_acquire(iminor(inode)); - if (IS_ERR(minor)) - return PTR_ERR(minor); - - dev = minor->dev; - if (!dev->open_count++) - need_setup = 1; - - /* share address_space across all char-devs of a single device */ - filp->f_mapping = dev->anon_inode->i_mapping; - - retcode = drm_open_helper(filp, minor); - if (retcode) - goto err_undo; - if (need_setup) { - retcode = drm_setup(dev); - if (retcode) { - drm_close_helper(filp); - goto err_undo; - } - } - return 0; - -err_undo: - dev->open_count--; - drm_minor_release(minor); - return retcode; -} -EXPORT_SYMBOL(drm_open); - /* * Check whether DRI will run on this CPU. * @@ -424,6 +352,56 @@ static int drm_open_helper(struct file *filp, struct drm_minor *minor) return 0; } +/** + * drm_open - open method for DRM file + * @inode: device inode + * @filp: file pointer. + * + * This function must be used by drivers as their &file_operations.open method. + * It looks up the correct DRM device and instantiates all the per-file + * resources for it. It also calls the &drm_driver.open driver callback. + * + * RETURNS: + * + * 0 on success or negative errno value on falure. + */ +int drm_open(struct inode *inode, struct file *filp) +{ + struct drm_device *dev; + struct drm_minor *minor; + int retcode; + int need_setup = 0; + + minor = drm_minor_acquire(iminor(inode)); + if (IS_ERR(minor)) + return PTR_ERR(minor); + + dev = minor->dev; + if (!dev->open_count++) + need_setup = 1; + + /* share address_space across all char-devs of a single device */ + filp->f_mapping = dev->anon_inode->i_mapping; + + retcode = drm_open_helper(filp, minor); + if (retcode) + goto err_undo; + if (need_setup) { + retcode = drm_legacy_setup(dev); + if (retcode) { + drm_close_helper(filp); + goto err_undo; + } + } + return 0; + +err_undo: + dev->open_count--; + drm_minor_release(minor); + return retcode; +} +EXPORT_SYMBOL(drm_open); + void drm_lastclose(struct drm_device * dev) { DRM_DEBUG("\n"); diff --git a/drivers/gpu/drm/drm_legacy.h b/drivers/gpu/drm/drm_legacy.h index 51f1fabfa145..013ccdfd90be 100644 --- a/drivers/gpu/drm/drm_legacy.h +++ b/drivers/gpu/drm/drm_legacy.h @@ -187,10 +187,12 @@ int drm_legacy_sg_free(struct drm_device *dev, void *data, void drm_legacy_init_members(struct drm_device *dev); void drm_legacy_destroy_members(struct drm_device *dev); void drm_legacy_dev_reinit(struct drm_device *dev); +int drm_legacy_setup(struct drm_device * dev); #else static inline void drm_legacy_init_members(struct drm_device *dev) {} static inline void drm_legacy_destroy_members(struct drm_device *dev) {} static inline void drm_legacy_dev_reinit(struct drm_device *dev) {} +static inline int drm_legacy_setup(struct drm_device * dev) { return 0; } #endif #if IS_ENABLED(CONFIG_DRM_LEGACY) diff --git a/drivers/gpu/drm/drm_legacy_misc.c b/drivers/gpu/drm/drm_legacy_misc.c index 2fe786839ca8..18d05a6c12b3 100644 --- a/drivers/gpu/drm/drm_legacy_misc.c +++ b/drivers/gpu/drm/drm_legacy_misc.c @@ -51,6 +51,26 @@ void drm_legacy_destroy_members(struct drm_device *dev) mutex_destroy(&dev->ctxlist_mutex); } +int drm_legacy_setup(struct drm_device * dev) +{ + int ret; + + if (dev->driver->firstopen && + drm_core_check_feature(dev, DRIVER_LEGACY)) { + ret = dev->driver->firstopen(dev); + if (ret != 0) + return ret; + } + + ret = drm_legacy_dma_setup(dev); + if (ret < 0) + return ret; + + + DRM_DEBUG("\n"); + return 0; +} + void drm_legacy_dev_reinit(struct drm_device *dev) { if (dev->irq_enabled)