diff options
Diffstat (limited to 'drivers/gpu/drm/drm_stub.c')
| -rw-r--r-- | drivers/gpu/drm/drm_stub.c | 805 |
1 files changed, 0 insertions, 805 deletions
diff --git a/drivers/gpu/drm/drm_stub.c b/drivers/gpu/drm/drm_stub.c deleted file mode 100644 index 14d16464000a..000000000000 --- a/drivers/gpu/drm/drm_stub.c +++ /dev/null @@ -1,805 +0,0 @@ -/* - * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org - * - * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California. - * All Rights Reserved. - * - * Author Rickard E. (Rik) Faith <faith@valinux.com> - * - * Permission is hereby granted, free of charge, to any person obtaining a - * copy of this software and associated documentation files (the "Software"), - * to deal in the Software without restriction, including without limitation - * the rights to use, copy, modify, merge, publish, distribute, sublicense, - * and/or sell copies of the Software, and to permit persons to whom the - * Software is furnished to do so, subject to the following conditions: - * - * The above copyright notice and this permission notice (including the next - * paragraph) shall be included in all copies or substantial portions of the - * Software. - * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL - * PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR - * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, - * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - * DEALINGS IN THE SOFTWARE. - */ - -#include <linux/fs.h> -#include <linux/module.h> -#include <linux/moduleparam.h> -#include <linux/mount.h> -#include <linux/slab.h> -#include <drm/drmP.h> -#include <drm/drm_core.h> - -unsigned int drm_debug = 0; /* 1 to enable debug output */ -EXPORT_SYMBOL(drm_debug); - -unsigned int drm_rnodes = 0; /* 1 to enable experimental render nodes API */ -EXPORT_SYMBOL(drm_rnodes); - -/* 1 to allow user space to request universal planes (experimental) */ -unsigned int drm_universal_planes = 0; -EXPORT_SYMBOL(drm_universal_planes); - -unsigned int drm_vblank_offdelay = 5000; /* Default to 5000 msecs. */ -EXPORT_SYMBOL(drm_vblank_offdelay); - -unsigned int drm_timestamp_precision = 20; /* Default to 20 usecs. */ -EXPORT_SYMBOL(drm_timestamp_precision); - -/* - * Default to use monotonic timestamps for wait-for-vblank and page-flip - * complete events. - */ -unsigned int drm_timestamp_monotonic = 1; - -MODULE_AUTHOR(CORE_AUTHOR); -MODULE_DESCRIPTION(CORE_DESC); -MODULE_LICENSE("GPL and additional rights"); -MODULE_PARM_DESC(debug, "Enable debug output"); -MODULE_PARM_DESC(rnodes, "Enable experimental render nodes API"); -MODULE_PARM_DESC(vblankoffdelay, "Delay until vblank irq auto-disable [msecs]"); -MODULE_PARM_DESC(timestamp_precision_usec, "Max. error on timestamps [usecs]"); -MODULE_PARM_DESC(timestamp_monotonic, "Use monotonic timestamps"); - -module_param_named(debug, drm_debug, int, 0600); -module_param_named(rnodes, drm_rnodes, int, 0600); -module_param_named(universal_planes, drm_universal_planes, int, 0600); -module_param_named(vblankoffdelay, drm_vblank_offdelay, int, 0600); -module_param_named(timestamp_precision_usec, drm_timestamp_precision, int, 0600); -module_param_named(timestamp_monotonic, drm_timestamp_monotonic, int, 0600); - -static DEFINE_SPINLOCK(drm_minor_lock); -struct idr drm_minors_idr; - -struct class *drm_class; -struct dentry *drm_debugfs_root; - -int drm_err(const char *func, const char *format, ...) -{ - struct va_format vaf; - va_list args; - int r; - - va_start(args, format); - - vaf.fmt = format; - vaf.va = &args; - - r = printk(KERN_ERR "[" DRM_NAME ":%s] *ERROR* %pV", func, &vaf); - - va_end(args); - - return r; -} -EXPORT_SYMBOL(drm_err); - -void drm_ut_debug_printk(const char *function_name, const char *format, ...) -{ - struct va_format vaf; - va_list args; - - va_start(args, format); - vaf.fmt = format; - vaf.va = &args; - - printk(KERN_DEBUG "[" DRM_NAME ":%s] %pV", function_name, &vaf); - - va_end(args); -} -EXPORT_SYMBOL(drm_ut_debug_printk); - -struct drm_master *drm_master_create(struct drm_minor *minor) -{ - struct drm_master *master; - - master = kzalloc(sizeof(*master), GFP_KERNEL); - if (!master) - return NULL; - - kref_init(&master->refcount); - spin_lock_init(&master->lock.spinlock); - init_waitqueue_head(&master->lock.lock_queue); - if (drm_ht_create(&master->magiclist, DRM_MAGIC_HASH_ORDER)) { - kfree(master); - return NULL; - } - INIT_LIST_HEAD(&master->magicfree); - master->minor = minor; - - return master; -} - -struct drm_master *drm_master_get(struct drm_master *master) -{ - kref_get(&master->refcount); - return master; -} -EXPORT_SYMBOL(drm_master_get); - -static void drm_master_destroy(struct kref *kref) -{ - struct drm_master *master = container_of(kref, struct drm_master, refcount); - struct drm_magic_entry *pt, *next; - struct drm_device *dev = master->minor->dev; - struct drm_map_list *r_list, *list_temp; - - mutex_lock(&dev->struct_mutex); - if (dev->driver->master_destroy) - dev->driver->master_destroy(dev, master); - - list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) { - if (r_list->master == master) { - drm_rmmap_locked(dev, r_list->map); - r_list = NULL; - } - } - - if (master->unique) { - kfree(master->unique); - master->unique = NULL; - master->unique_len = 0; - } - - list_for_each_entry_safe(pt, next, &master->magicfree, head) { - list_del(&pt->head); - drm_ht_remove_item(&master->magiclist, &pt->hash_item); - kfree(pt); - } - - drm_ht_remove(&master->magiclist); - - mutex_unlock(&dev->struct_mutex); - kfree(master); -} - -void drm_master_put(struct drm_master **master) -{ - kref_put(&(*master)->refcount, drm_master_destroy); - *master = NULL; -} -EXPORT_SYMBOL(drm_master_put); - -int drm_setmaster_ioctl(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - int ret = 0; - - mutex_lock(&dev->master_mutex); - if (file_priv->is_master) - goto out_unlock; - - if (file_priv->minor->master) { - ret = -EINVAL; - goto out_unlock; - } - - if (!file_priv->master) { - ret = -EINVAL; - goto out_unlock; - } - - file_priv->minor->master = drm_master_get(file_priv->master); - file_priv->is_master = 1; - if (dev->driver->master_set) { - ret = dev->driver->master_set(dev, file_priv, false); - if (unlikely(ret != 0)) { - file_priv->is_master = 0; - drm_master_put(&file_priv->minor->master); - } - } - -out_unlock: - mutex_unlock(&dev->master_mutex); - return ret; -} - -int drm_dropmaster_ioctl(struct drm_device *dev, void *data, - struct drm_file *file_priv) -{ - int ret = -EINVAL; - - mutex_lock(&dev->master_mutex); - if (!file_priv->is_master) - goto out_unlock; - - if (!file_priv->minor->master) - goto out_unlock; - - ret = 0; - if (dev->driver->master_drop) - dev->driver->master_drop(dev, file_priv, false); - drm_master_put(&file_priv->minor->master); - file_priv->is_master = 0; - -out_unlock: - mutex_unlock(&dev->master_mutex); - return ret; -} - -/* - * DRM Minors - * A DRM device can provide several char-dev interfaces on the DRM-Major. Each - * of them is represented by a drm_minor object. Depending on the capabilities - * of the device-driver, different interfaces are registered. - * - * Minors can be accessed via dev->$minor_name. This pointer is either - * NULL or a valid drm_minor pointer and stays valid as long as the device is - * valid. This means, DRM minors have the same life-time as the underlying - * device. However, this doesn't mean that the minor is active. Minors are - * registered and unregistered dynamically according to device-state. - */ - -static struct drm_minor **drm_minor_get_slot(struct drm_device *dev, - unsigned int type) -{ - switch (type) { - case DRM_MINOR_LEGACY: - return &dev->primary; - case DRM_MINOR_RENDER: - return &dev->render; - case DRM_MINOR_CONTROL: - return &dev->control; - default: - return NULL; - } -} - -static int drm_minor_alloc(struct drm_device *dev, unsigned int type) -{ - struct drm_minor *minor; - - minor = kzalloc(sizeof(*minor), GFP_KERNEL); - if (!minor) - return -ENOMEM; - - minor->type = type; - minor->dev = dev; - - *drm_minor_get_slot(dev, type) = minor; - return 0; -} - -static void drm_minor_free(struct drm_device *dev, unsigned int type) -{ - struct drm_minor **slot; - - slot = drm_minor_get_slot(dev, type); - if (*slot) { - drm_mode_group_destroy(&(*slot)->mode_group); - kfree(*slot); - *slot = NULL; - } -} - -static int drm_minor_register(struct drm_device *dev, unsigned int type) -{ - struct drm_minor *new_minor; - unsigned long flags; - int ret; - int minor_id; - - DRM_DEBUG("\n"); - - new_minor = *drm_minor_get_slot(dev, type); - if (!new_minor) - return 0; - - idr_preload(GFP_KERNEL); - spin_lock_irqsave(&drm_minor_lock, flags); - minor_id = idr_alloc(&drm_minors_idr, - NULL, - 64 * type, - 64 * (type + 1), - GFP_NOWAIT); - spin_unlock_irqrestore(&drm_minor_lock, flags); - idr_preload_end(); - - if (minor_id < 0) - return minor_id; - - new_minor->index = minor_id; - - ret = drm_debugfs_init(new_minor, minor_id, drm_debugfs_root); - if (ret) { - DRM_ERROR("DRM: Failed to initialize /sys/kernel/debug/dri.\n"); - goto err_id; - } - - ret = drm_sysfs_device_add(new_minor); - if (ret) { - DRM_ERROR("DRM: Error sysfs_device_add.\n"); - goto err_debugfs; - } - - /* replace NULL with @minor so lookups will succeed from now on */ - spin_lock_irqsave(&drm_minor_lock, flags); - idr_replace(&drm_minors_idr, new_minor, new_minor->index); - spin_unlock_irqrestore(&drm_minor_lock, flags); - - DRM_DEBUG("new minor assigned %d\n", minor_id); - return 0; - -err_debugfs: - drm_debugfs_cleanup(new_minor); -err_id: - spin_lock_irqsave(&drm_minor_lock, flags); - idr_remove(&drm_minors_idr, minor_id); - spin_unlock_irqrestore(&drm_minor_lock, flags); - new_minor->index = 0; - return ret; -} - -static void drm_minor_unregister(struct drm_device *dev, unsigned int type) -{ - struct drm_minor *minor; - unsigned long flags; - - minor = *drm_minor_get_slot(dev, type); - if (!minor || !minor->kdev) - return; - - spin_lock_irqsave(&drm_minor_lock, flags); - idr_remove(&drm_minors_idr, minor->index); - spin_unlock_irqrestore(&drm_minor_lock, flags); - minor->index = 0; - - drm_debugfs_cleanup(minor); - drm_sysfs_device_remove(minor); -} - -/** - * drm_minor_acquire - Acquire a DRM minor - * @minor_id: Minor ID of the DRM-minor - * - * Looks up the given minor-ID and returns the respective DRM-minor object. The - * refence-count of the underlying device is increased so you must release this - * object with drm_minor_release(). - * - * As long as you hold this minor, it is guaranteed that the object and the - * minor->dev pointer will stay valid! However, the device may get unplugged and - * unregistered while you hold the minor. - * - * Returns: - * Pointer to minor-object with increased device-refcount, or PTR_ERR on - * failure. - */ -struct drm_minor *drm_minor_acquire(unsigned int minor_id) -{ - struct drm_minor *minor; - unsigned long flags; - - spin_lock_irqsave(&drm_minor_lock, flags); - minor = idr_find(&drm_minors_idr, minor_id); - if (minor) - drm_dev_ref(minor->dev); - spin_unlock_irqrestore(&drm_minor_lock, flags); - - if (!minor) { - return ERR_PTR(-ENODEV); - } else if (drm_device_is_unplugged(minor->dev)) { - drm_dev_unref(minor->dev); - return ERR_PTR(-ENODEV); - } - - return minor; -} - -/** - * drm_minor_release - Release DRM minor - * @minor: Pointer to DRM minor object - * - * Release a minor that was previously acquired via drm_minor_acquire(). - */ -void drm_minor_release(struct drm_minor *minor) -{ - drm_dev_unref(minor->dev); -} - -/** - * drm_put_dev - Unregister and release a DRM device - * @dev: DRM device - * - * Called at module unload time or when a PCI device is unplugged. - * - * Use of this function is discouraged. It will eventually go away completely. - * Please use drm_dev_unregister() and drm_dev_unref() explicitly instead. - * - * Cleans up all DRM device, calling drm_lastclose(). - */ -void drm_put_dev(struct drm_device *dev) -{ - DRM_DEBUG("\n"); - - if (!dev) { - DRM_ERROR("cleanup called no dev\n"); - return; - } - - drm_dev_unregister(dev); - drm_dev_unref(dev); -} -EXPORT_SYMBOL(drm_put_dev); - -void drm_unplug_dev(struct drm_device *dev) -{ - /* for a USB device */ - drm_minor_unregister(dev, DRM_MINOR_LEGACY); - drm_minor_unregister(dev, DRM_MINOR_RENDER); - drm_minor_unregister(dev, DRM_MINOR_CONTROL); - - mutex_lock(&drm_global_mutex); - - drm_device_set_unplugged(dev); - - if (dev->open_count == 0) { - drm_put_dev(dev); - } - mutex_unlock(&drm_global_mutex); -} -EXPORT_SYMBOL(drm_unplug_dev); - -/* - * DRM internal mount - * We want to be able to allocate our own "struct address_space" to control - * memory-mappings in VRAM (or stolen RAM, ...). However, core MM does not allow - * stand-alone address_space objects, so we need an underlying inode. As there - * is no way to allocate an independent inode easily, we need a fake internal - * VFS mount-point. - * - * The drm_fs_inode_new() function allocates a new inode, drm_fs_inode_free() - * frees it again. You are allowed to use iget() and iput() to get references to - * the inode. But each drm_fs_inode_new() call must be paired with exactly one - * drm_fs_inode_free() call (which does not have to be the last iput()). - * We use drm_fs_inode_*() to manage our internal VFS mount-point and share it - * between multiple inode-users. You could, technically, call - * iget() + drm_fs_inode_free() directly after alloc and sometime later do an - * iput(), but this way you'd end up with a new vfsmount for each inode. - */ - -static int drm_fs_cnt; -static struct vfsmount *drm_fs_mnt; - -static const struct dentry_operations drm_fs_dops = { - .d_dname = simple_dname, -}; - -static const struct super_operations drm_fs_sops = { - .statfs = simple_statfs, -}; - -static struct dentry *drm_fs_mount(struct file_system_type *fs_type, int flags, - const char *dev_name, void *data) -{ - return mount_pseudo(fs_type, - "drm:", - &drm_fs_sops, - &drm_fs_dops, - 0x010203ff); -} - -static struct file_system_type drm_fs_type = { - .name = "drm", - .owner = THIS_MODULE, - .mount = drm_fs_mount, - .kill_sb = kill_anon_super, -}; - -static struct inode *drm_fs_inode_new(void) -{ - struct inode *inode; - int r; - - r = simple_pin_fs(&drm_fs_type, &drm_fs_mnt, &drm_fs_cnt); - if (r < 0) { - DRM_ERROR("Cannot mount pseudo fs: %d\n", r); - return ERR_PTR(r); - } - - inode = alloc_anon_inode(drm_fs_mnt->mnt_sb); - if (IS_ERR(inode)) - simple_release_fs(&drm_fs_mnt, &drm_fs_cnt); - - return inode; -} - -static void drm_fs_inode_free(struct inode *inode) -{ - if (inode) { - iput(inode); - simple_release_fs(&drm_fs_mnt, &drm_fs_cnt); - } -} - -/** - * drm_dev_alloc - Allocate new DRM device - * @driver: DRM driver to allocate device for - * @parent: Parent device object - * - * Allocate and initialize a new DRM device. No device registration is done. - * Call drm_dev_register() to advertice the device to user space and register it - * with other core subsystems. - * - * The initial ref-count of the object is 1. Use drm_dev_ref() and - * drm_dev_unref() to take and drop further ref-counts. - * - * RETURNS: - * Pointer to new DRM device, or NULL if out of memory. - */ -struct drm_device *drm_dev_alloc(struct drm_driver *driver, - struct device *parent) -{ - struct drm_device *dev; - int ret; - - dev = kzalloc(sizeof(*dev), GFP_KERNEL); - if (!dev) - return NULL; - - kref_init(&dev->ref); - dev->dev = parent; - dev->driver = driver; - - INIT_LIST_HEAD(&dev->filelist); - INIT_LIST_HEAD(&dev->ctxlist); - INIT_LIST_HEAD(&dev->vmalist); - INIT_LIST_HEAD(&dev->maplist); - INIT_LIST_HEAD(&dev->vblank_event_list); - - spin_lock_init(&dev->buf_lock); - spin_lock_init(&dev->event_lock); - mutex_init(&dev->struct_mutex); - mutex_init(&dev->ctxlist_mutex); - mutex_init(&dev->master_mutex); - - dev->anon_inode = drm_fs_inode_new(); - if (IS_ERR(dev->anon_inode)) { - ret = PTR_ERR(dev->anon_inode); - DRM_ERROR("Cannot allocate anonymous inode: %d\n", ret); - goto err_free; - } - - if (drm_core_check_feature(dev, DRIVER_MODESET)) { - ret = drm_minor_alloc(dev, DRM_MINOR_CONTROL); - if (ret) - goto err_minors; - } - - if (drm_core_check_feature(dev, DRIVER_RENDER) && drm_rnodes) { - ret = drm_minor_alloc(dev, DRM_MINOR_RENDER); - if (ret) - goto err_minors; - } - - ret = drm_minor_alloc(dev, DRM_MINOR_LEGACY); - if (ret) - goto err_minors; - - if (drm_ht_create(&dev->map_hash, 12)) - goto err_minors; - - ret = drm_ctxbitmap_init(dev); - if (ret) { - DRM_ERROR("Cannot allocate memory for context bitmap.\n"); - goto err_ht; - } - - if (driver->driver_features & DRIVER_GEM) { - ret = drm_gem_init(dev); - if (ret) { - DRM_ERROR("Cannot initialize graphics execution manager (GEM)\n"); - goto err_ctxbitmap; - } - } - - return dev; - -err_ctxbitmap: - drm_ctxbitmap_cleanup(dev); -err_ht: - drm_ht_remove(&dev->map_hash); -err_minors: - drm_minor_free(dev, DRM_MINOR_LEGACY); - drm_minor_free(dev, DRM_MINOR_RENDER); - drm_minor_free(dev, DRM_MINOR_CONTROL); - drm_fs_inode_free(dev->anon_inode); -err_free: - mutex_destroy(&dev->master_mutex); - kfree(dev); - return NULL; -} -EXPORT_SYMBOL(drm_dev_alloc); - -static void drm_dev_release(struct kref *ref) -{ - struct drm_device *dev = container_of(ref, struct drm_device, ref); - - if (dev->driver->driver_features & DRIVER_GEM) - drm_gem_destroy(dev); - - drm_ctxbitmap_cleanup(dev); - drm_ht_remove(&dev->map_hash); - drm_fs_inode_free(dev->anon_inode); - - drm_minor_free(dev, DRM_MINOR_LEGACY); - drm_minor_free(dev, DRM_MINOR_RENDER); - drm_minor_free(dev, DRM_MINOR_CONTROL); - - mutex_destroy(&dev->master_mutex); - kfree(dev->unique); - kfree(dev); -} - -/** - * drm_dev_ref - Take reference of a DRM device - * @dev: device to take reference of or NULL - * - * This increases the ref-count of @dev by one. You *must* already own a - * reference when calling this. Use drm_dev_unref() to drop this reference - * again. - * - * This function never fails. However, this function does not provide *any* - * guarantee whether the device is alive or running. It only provides a - * reference to the object and the memory associated with it. - */ -void drm_dev_ref(struct drm_device *dev) -{ - if (dev) - kref_get(&dev->ref); -} -EXPORT_SYMBOL(drm_dev_ref); - -/** - * drm_dev_unref - Drop reference of a DRM device - * @dev: device to drop reference of or NULL - * - * This decreases the ref-count of @dev by one. The device is destroyed if the - * ref-count drops to zero. - */ -void drm_dev_unref(struct drm_device *dev) -{ - if (dev) - kref_put(&dev->ref, drm_dev_release); -} -EXPORT_SYMBOL(drm_dev_unref); - -/** - * drm_dev_register - Register DRM device - * @dev: Device to register - * @flags: Flags passed to the driver's .load() function - * - * Register the DRM device @dev with the system, advertise device to user-space - * and start normal device operation. @dev must be allocated via drm_dev_alloc() - * previously. - * - * Never call this twice on any device! - * - * RETURNS: - * 0 on success, negative error code on failure. - */ -int drm_dev_register(struct drm_device *dev, unsigned long flags) -{ - int ret; - - mutex_lock(&drm_global_mutex); - - ret = drm_minor_register(dev, DRM_MINOR_CONTROL); - if (ret) - goto err_minors; - - ret = drm_minor_register(dev, DRM_MINOR_RENDER); - if (ret) - goto err_minors; - - ret = drm_minor_register(dev, DRM_MINOR_LEGACY); - if (ret) - goto err_minors; - - if (dev->driver->load) { - ret = dev->driver->load(dev, flags); - if (ret) - goto err_minors; - } - - /* setup grouping for legacy outputs */ - if (drm_core_check_feature(dev, DRIVER_MODESET)) { - ret = drm_mode_group_init_legacy_group(dev, - &dev->primary->mode_group); - if (ret) - goto err_unload; - } - - ret = 0; - goto out_unlock; - -err_unload: - if (dev->driver->unload) - dev->driver->unload(dev); -err_minors: - drm_minor_unregister(dev, DRM_MINOR_LEGACY); - drm_minor_unregister(dev, DRM_MINOR_RENDER); - drm_minor_unregister(dev, DRM_MINOR_CONTROL); -out_unlock: - mutex_unlock(&drm_global_mutex); - return ret; -} -EXPORT_SYMBOL(drm_dev_register); - -/** - * drm_dev_unregister - Unregister DRM device - * @dev: Device to unregister - * - * Unregister the DRM device from the system. This does the reverse of - * drm_dev_register() but does not deallocate the device. The caller must call - * drm_dev_unref() to drop their final reference. - */ -void drm_dev_unregister(struct drm_device *dev) -{ - struct drm_map_list *r_list, *list_temp; - - drm_lastclose(dev); - - if (dev->driver->unload) - dev->driver->unload(dev); - - if (dev->agp) - drm_pci_agp_destroy(dev); - - drm_vblank_cleanup(dev); - - list_for_each_entry_safe(r_list, list_temp, &dev->maplist, head) - drm_rmmap(dev, r_list->map); - - drm_minor_unregister(dev, DRM_MINOR_LEGACY); - drm_minor_unregister(dev, DRM_MINOR_RENDER); - drm_minor_unregister(dev, DRM_MINOR_CONTROL); -} -EXPORT_SYMBOL(drm_dev_unregister); - -/** - * drm_dev_set_unique - Set the unique name of a DRM device - * @dev: device of which to set the unique name - * @fmt: format string for unique name - * - * Sets the unique name of a DRM device using the specified format string and - * a variable list of arguments. Drivers can use this at driver probe time if - * the unique name of the devices they drive is static. - * - * Return: 0 on success or a negative error code on failure. - */ -int drm_dev_set_unique(struct drm_device *dev, const char *fmt, ...) -{ - va_list ap; - - kfree(dev->unique); - - va_start(ap, fmt); - dev->unique = kvasprintf(GFP_KERNEL, fmt, ap); - va_end(ap); - - return dev->unique ? 0 : -ENOMEM; -} -EXPORT_SYMBOL(drm_dev_set_unique); |
