[mirror_ubuntu-focal-kernel.git] / drivers / gpu / drm / drm_stub.c

/**
 * \file drm_stub.h
 * Stub support
 *
 * \author Rickard E. (Rik) Faith <faith@valinux.com>
 */

/*
 * Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
 *
 * Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
 * All Rights Reserved.
 *
 * 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/module.h>
#include <linux/moduleparam.h>
#include "drmP.h"
#include "drm_core.h"

unsigned int drm_debug = 0;	/* 1 to enable debug output */
EXPORT_SYMBOL(drm_debug);

MODULE_AUTHOR(CORE_AUTHOR);
MODULE_DESCRIPTION(CORE_DESC);
MODULE_LICENSE("GPL and additional rights");
MODULE_PARM_DESC(debug, "Enable debug output");

module_param_named(debug, drm_debug, int, 0600);

struct idr drm_minors_idr;

struct class *drm_class;
struct proc_dir_entry *drm_proc_root;

static int drm_minor_get_id(struct drm_device *dev, int type)
{
	int new_id;
	int ret;
	int base = 0, limit = 63;

again:
	if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
		DRM_ERROR("Out of memory expanding drawable idr\n");
		return -ENOMEM;
	}
	mutex_lock(&dev->struct_mutex);
	ret = idr_get_new_above(&drm_minors_idr, NULL,
				base, &new_id);
	mutex_unlock(&dev->struct_mutex);
	if (ret == -EAGAIN) {
		goto again;
	} else if (ret) {
		return ret;
	}

	if (new_id >= limit) {
		idr_remove(&drm_minors_idr, new_id);
		return -EINVAL;
	}
	return new_id;
}

static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
			   const struct pci_device_id *ent,
			   struct drm_driver *driver)
{
	int retcode;

	INIT_LIST_HEAD(&dev->filelist);
	INIT_LIST_HEAD(&dev->ctxlist);
	INIT_LIST_HEAD(&dev->vmalist);
	INIT_LIST_HEAD(&dev->maplist);

	spin_lock_init(&dev->count_lock);
	spin_lock_init(&dev->drw_lock);
	spin_lock_init(&dev->lock.spinlock);
	init_timer(&dev->timer);
	mutex_init(&dev->struct_mutex);
	mutex_init(&dev->ctxlist_mutex);

	idr_init(&dev->drw_idr);

	dev->pdev = pdev;
	dev->pci_device = pdev->device;
	dev->pci_vendor = pdev->vendor;

#ifdef __alpha__
	dev->hose = pdev->sysdata;
#endif

	if (drm_ht_create(&dev->map_hash, 12)) {
		return -ENOMEM;
	}

	/* the DRM has 6 basic counters */
	dev->counters = 6;
	dev->types[0] = _DRM_STAT_LOCK;
	dev->types[1] = _DRM_STAT_OPENS;
	dev->types[2] = _DRM_STAT_CLOSES;
	dev->types[3] = _DRM_STAT_IOCTLS;
	dev->types[4] = _DRM_STAT_LOCKS;
	dev->types[5] = _DRM_STAT_UNLOCKS;

	dev->driver = driver;

	if (drm_core_has_AGP(dev)) {
		if (drm_device_is_agp(dev))
			dev->agp = drm_agp_init(dev);
		if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
		    && (dev->agp == NULL)) {
			DRM_ERROR("Cannot initialize the agpgart module.\n");
			retcode = -EINVAL;
			goto error_out_unreg;
		}
		if (drm_core_has_MTRR(dev)) {
			if (dev->agp)
				dev->agp->agp_mtrr =
				    mtrr_add(dev->agp->agp_info.aper_base,
					     dev->agp->agp_info.aper_size *
					     1024 * 1024, MTRR_TYPE_WRCOMB, 1);
		}
	}

	if (dev->driver->load)
		if ((retcode = dev->driver->load(dev, ent->driver_data)))
			goto error_out_unreg;

	retcode = drm_ctxbitmap_init(dev);
	if (retcode) {
		DRM_ERROR("Cannot allocate memory for context bitmap.\n");
		goto error_out_unreg;
	}

	if (driver->driver_features & DRIVER_GEM) {
		retcode = drm_gem_init(dev);
		if (retcode) {
			DRM_ERROR("Cannot initialize graphics execution "
				  "manager (GEM)\n");
			goto error_out_unreg;
		}
	}

	return 0;

      error_out_unreg:
	drm_lastclose(dev);
	return retcode;
}


/**
 * Get a secondary minor number.
 *
 * \param dev device data structure
 * \param sec-minor structure to hold the assigned minor
 * \return negative number on failure.
 *
 * Search an empty entry and initialize it to the given parameters, and
 * create the proc init entry via proc_init(). This routines assigns
 * minor numbers to secondary heads of multi-headed cards
 */
static int drm_get_minor(struct drm_device *dev, struct drm_minor **minor, int type)
{
	struct drm_minor *new_minor;
	int ret;
	int minor_id;

	DRM_DEBUG("\n");

	minor_id = drm_minor_get_id(dev, type);
	if (minor_id < 0)
		return minor_id;

	new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
	if (!new_minor) {
		ret = -ENOMEM;
		goto err_idr;
	}

	new_minor->type = type;
	new_minor->device = MKDEV(DRM_MAJOR, minor_id);
	new_minor->dev = dev;
	new_minor->index = minor_id;

	idr_replace(&drm_minors_idr, new_minor, minor_id);

	if (type == DRM_MINOR_LEGACY) {
		ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
		if (ret) {
			DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
			goto err_mem;
		}
	} else
		new_minor->dev_root = NULL;

	ret = drm_sysfs_device_add(new_minor);
	if (ret) {
		printk(KERN_ERR
		       "DRM: Error sysfs_device_add.\n");
		goto err_g2;
	}
	*minor = new_minor;

	DRM_DEBUG("new minor assigned %d\n", minor_id);
	return 0;


err_g2:
	if (new_minor->type == DRM_MINOR_LEGACY)
		drm_proc_cleanup(new_minor, drm_proc_root);
err_mem:
	kfree(new_minor);
err_idr:
	idr_remove(&drm_minors_idr, minor_id);
	*minor = NULL;
	return ret;
}

/**
 * Register.
 *
 * \param pdev - PCI device structure
 * \param ent entry from the PCI ID table with device type flags
 * \return zero on success or a negative number on failure.
 *
 * Attempt to gets inter module "drm" information. If we are first
 * then register the character device and inter module information.
 * Try and register, if we fail to register, backout previous work.
 */
int drm_get_dev(struct pci_dev *pdev, const struct pci_device_id *ent,
		struct drm_driver *driver)
{
	struct drm_device *dev;
	int ret;

	DRM_DEBUG("\n");

	dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
	if (!dev)
		return -ENOMEM;

	ret = pci_enable_device(pdev);
	if (ret)
		goto err_g1;

	pci_set_master(pdev);
	if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
		printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
		goto err_g2;
	}
	if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
		goto err_g2;

	DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
		 driver->name, driver->major, driver->minor, driver->patchlevel,
		 driver->date, dev->primary->index);

	return 0;

err_g2:
	pci_disable_device(pdev);
err_g1:
	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
	return ret;
}

/**
 * Put a device minor number.
 *
 * \param dev device data structure
 * \return always zero
 *
 * Cleans up the proc resources. If it is the last minor then release the foreign
 * "drm" data, otherwise unregisters the "drm" data, frees the dev list and
 * unregisters the character device.
 */
int drm_put_dev(struct drm_device * dev)
{
	DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name);

	if (dev->unique) {
		drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
		dev->unique = NULL;
		dev->unique_len = 0;
	}
	if (dev->devname) {
		drm_free(dev->devname, strlen(dev->devname) + 1,
			 DRM_MEM_DRIVER);
		dev->devname = NULL;
	}
	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
	return 0;
}

/**
 * Put a secondary minor number.
 *
 * \param sec_minor - structure to be released
 * \return always zero
 *
 * Cleans up the proc resources. Not legal for this to be the
 * last minor released.
 *
 */
int drm_put_minor(struct drm_minor **minor_p)
{
	struct drm_minor *minor = *minor_p;

	DRM_DEBUG("release secondary minor %d\n", minor->index);

	if (minor->type == DRM_MINOR_LEGACY)
		drm_proc_cleanup(minor, drm_proc_root);
	drm_sysfs_device_remove(minor);

	idr_remove(&drm_minors_idr, minor->index);

	kfree(minor);
	*minor_p = NULL;
	return 0;
}
Commit	Line	Data
1da177e4 LT	1	/**
	2	* \file drm_stub.h
	3	* Stub support
	4	*
	5	* \author Rickard E. (Rik) Faith <faith@valinux.com>
	6	*/
	7
	8	/*
	9	* Created: Fri Jan 19 10:48:35 2001 by faith@acm.org
	10	*
	11	* Copyright 2001 VA Linux Systems, Inc., Sunnyvale, California.
	12	* All Rights Reserved.
	13	*
	14	* Permission is hereby granted, free of charge, to any person obtaining a
	15	* copy of this software and associated documentation files (the "Software"),
	16	* to deal in the Software without restriction, including without limitation
	17	* the rights to use, copy, modify, merge, publish, distribute, sublicense,
	18	* and/or sell copies of the Software, and to permit persons to whom the
	19	* Software is furnished to do so, subject to the following conditions:
	20	*
	21	* The above copyright notice and this permission notice (including the next
	22	* paragraph) shall be included in all copies or substantial portions of the
	23	* Software.
	24	*
	25	* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
	26	* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
	27	* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
	28	* PRECISION INSIGHT AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
	29	* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
	30	* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
	31	* DEALINGS IN THE SOFTWARE.
	32	*/
	33
	34	#include <linux/module.h>
	35	#include <linux/moduleparam.h>
	36	#include "drmP.h"
	37	#include "drm_core.h"
	38
b5e89ed5	39	unsigned int drm_debug = 0; /* 1 to enable debug output */
1da177e4 LT	40	EXPORT_SYMBOL(drm_debug);
1da177e4 LT	41
b5e89ed5 DA	42	MODULE_AUTHOR(CORE_AUTHOR);
b5e89ed5 DA	43	MODULE_DESCRIPTION(CORE_DESC);
1da177e4	44	MODULE_LICENSE("GPL and additional rights");
1da177e4 LT	45	MODULE_PARM_DESC(debug, "Enable debug output");
1da177e4 LT	46
c0758146	47	module_param_named(debug, drm_debug, int, 0600);
1da177e4	48
2c14f28b DA	49	struct idr drm_minors_idr;
2c14f28b DA	50
0650fd58	51	struct class *drm_class;
1da177e4 LT	52	struct proc_dir_entry *drm_proc_root;
1da177e4 LT	53
2c14f28b DA	54	static int drm_minor_get_id(struct drm_device *dev, int type)
	55	{
	56	int new_id;
	57	int ret;
	58	int base = 0, limit = 63;
	59
	60	again:
	61	if (idr_pre_get(&drm_minors_idr, GFP_KERNEL) == 0) {
	62	DRM_ERROR("Out of memory expanding drawable idr\n");
	63	return -ENOMEM;
	64	}
	65	mutex_lock(&dev->struct_mutex);
	66	ret = idr_get_new_above(&drm_minors_idr, NULL,
	67	base, &new_id);
	68	mutex_unlock(&dev->struct_mutex);
	69	if (ret == -EAGAIN) {
	70	goto again;
	71	} else if (ret) {
	72	return ret;
	73	}
	74
	75	if (new_id >= limit) {
	76	idr_remove(&drm_minors_idr, new_id);
	77	return -EINVAL;
	78	}
	79	return new_id;
	80	}
	81
84b1fd10	82	static int drm_fill_in_dev(struct drm_device * dev, struct pci_dev *pdev,
b5e89ed5 DA	83	const struct pci_device_id *ent,
b5e89ed5 DA	84	struct drm_driver *driver)
1da177e4 LT	85	{
	86	int retcode;
	87
bd1b331f	88	INIT_LIST_HEAD(&dev->filelist);
7c158ace DA	89	INIT_LIST_HEAD(&dev->ctxlist);
	90	INIT_LIST_HEAD(&dev->vmalist);
	91	INIT_LIST_HEAD(&dev->maplist);
	92
1da177e4	93	spin_lock_init(&dev->count_lock);
bea5679f	94	spin_lock_init(&dev->drw_lock);
040ac320	95	spin_lock_init(&dev->lock.spinlock);
b5e89ed5	96	init_timer(&dev->timer);
30e2fb18 DA	97	mutex_init(&dev->struct_mutex);
30e2fb18 DA	98	mutex_init(&dev->ctxlist_mutex);
1da177e4	99
45ea5dcd DA	100	idr_init(&dev->drw_idr);
45ea5dcd DA	101
b5e89ed5	102	dev->pdev = pdev;
2f02cc3f EA	103	dev->pci_device = pdev->device;
2f02cc3f EA	104	dev->pci_vendor = pdev->vendor;
1da177e4 LT	105
1da177e4 LT	106	#ifdef __alpha__
b5e89ed5	107	dev->hose = pdev->sysdata;
1da177e4	108	#endif
1da177e4	109
8d153f71	110	if (drm_ht_create(&dev->map_hash, 12)) {
8d153f71 TH	111	return -ENOMEM;
8d153f71 TH	112	}
836cf046	113
1da177e4 LT	114	/* the DRM has 6 basic counters */
1da177e4 LT	115	dev->counters = 6;
b5e89ed5 DA	116	dev->types[0] = _DRM_STAT_LOCK;
	117	dev->types[1] = _DRM_STAT_OPENS;
	118	dev->types[2] = _DRM_STAT_CLOSES;
	119	dev->types[3] = _DRM_STAT_IOCTLS;
	120	dev->types[4] = _DRM_STAT_LOCKS;
	121	dev->types[5] = _DRM_STAT_UNLOCKS;
1da177e4 LT	122
1da177e4 LT	123	dev->driver = driver;
b5e89ed5	124
1da177e4	125	if (drm_core_has_AGP(dev)) {
cda17380 DA	126	if (drm_device_is_agp(dev))
cda17380 DA	127	dev->agp = drm_agp_init(dev);
b5e89ed5 DA	128	if (drm_core_check_feature(dev, DRIVER_REQUIRE_AGP)
	129	&& (dev->agp == NULL)) {
	130	DRM_ERROR("Cannot initialize the agpgart module.\n");
1da177e4 LT	131	retcode = -EINVAL;
	132	goto error_out_unreg;
	133	}
	134	if (drm_core_has_MTRR(dev)) {
	135	if (dev->agp)
b5e89ed5 DA	136	dev->agp->agp_mtrr =
	137	mtrr_add(dev->agp->agp_info.aper_base,
	138	dev->agp->agp_info.aper_size *
	139	1024 * 1024, MTRR_TYPE_WRCOMB, 1);
1da177e4 LT	140	}
	141	}
	142
2716a02f DA	143	if (dev->driver->load)
	144	if ((retcode = dev->driver->load(dev, ent->driver_data)))
	145	goto error_out_unreg;
	146
b5e89ed5 DA	147	retcode = drm_ctxbitmap_init(dev);
	148	if (retcode) {
	149	DRM_ERROR("Cannot allocate memory for context bitmap.\n");
1da177e4 LT	150	goto error_out_unreg;
	151	}
	152
673a394b EA	153	if (driver->driver_features & DRIVER_GEM) {
	154	retcode = drm_gem_init(dev);
	155	if (retcode) {
	156	DRM_ERROR("Cannot initialize graphics execution "
	157	"manager (GEM)\n");
	158	goto error_out_unreg;
	159	}
	160	}
	161
1da177e4	162	return 0;
b5e89ed5 DA	163
b5e89ed5 DA	164	error_out_unreg:
22eae947	165	drm_lastclose(dev);
1da177e4 LT	166	return retcode;
	167	}
	168
1da177e4	169
1da177e4 LT	170	/**
	171	* Get a secondary minor number.
	172	*
	173	* \param dev device data structure
	174	* \param sec-minor structure to hold the assigned minor
	175	* \return negative number on failure.
	176	*
	177	* Search an empty entry and initialize it to the given parameters, and
	178	* create the proc init entry via proc_init(). This routines assigns
	179	* minor numbers to secondary heads of multi-headed cards
	180	*/
2c14f28b	181	static int drm_get_minor(struct drm_device dev, struct drm_minor *minor, int type)
1da177e4	182	{
2c14f28b	183	struct drm_minor *new_minor;
1da177e4	184	int ret;
2c14f28b	185	int minor_id;
1da177e4 LT	186
	187	DRM_DEBUG("\n");
	188
2c14f28b DA	189	minor_id = drm_minor_get_id(dev, type);
	190	if (minor_id < 0)
	191	return minor_id;
	192
	193	new_minor = kzalloc(sizeof(struct drm_minor), GFP_KERNEL);
	194	if (!new_minor) {
	195	ret = -ENOMEM;
	196	goto err_idr;
	197	}
	198
	199	new_minor->type = type;
	200	new_minor->device = MKDEV(DRM_MAJOR, minor_id);
	201	new_minor->dev = dev;
	202	new_minor->index = minor_id;
	203
	204	idr_replace(&drm_minors_idr, new_minor, minor_id);
	205
	206	if (type == DRM_MINOR_LEGACY) {
	207	ret = drm_proc_init(new_minor, minor_id, drm_proc_root);
	208	if (ret) {
	209	DRM_ERROR("DRM: Failed to initialize /proc/dri.\n");
	210	goto err_mem;
1da177e4	211	}
2c14f28b DA	212	} else
	213	new_minor->dev_root = NULL;
	214
	215	ret = drm_sysfs_device_add(new_minor);
	216	if (ret) {
	217	printk(KERN_ERR
	218	"DRM: Error sysfs_device_add.\n");
	219	goto err_g2;
1da177e4	220	}
2c14f28b DA	221	*minor = new_minor;
	222
	223	DRM_DEBUG("new minor assigned %d\n", minor_id);
	224	return 0;
	225
	226
	227	err_g2:
	228	if (new_minor->type == DRM_MINOR_LEGACY)
	229	drm_proc_cleanup(new_minor, drm_proc_root);
	230	err_mem:
	231	kfree(new_minor);
	232	err_idr:
	233	idr_remove(&drm_minors_idr, minor_id);
	234	*minor = NULL;
1da177e4 LT	235	return ret;
1da177e4 LT	236	}
b5e89ed5	237
c94f7029 DA	238	/**
	239	* Register.
	240	*
	241	* \param pdev - PCI device structure
	242	* \param ent entry from the PCI ID table with device type flags
	243	* \return zero on success or a negative number on failure.
	244	*
	245	* Attempt to gets inter module "drm" information. If we are first
	246	* then register the character device and inter module information.
	247	* Try and register, if we fail to register, backout previous work.
	248	*/
	249	int drm_get_dev(struct pci_dev pdev, const struct pci_device_id ent,
b5e89ed5	250	struct drm_driver *driver)
c94f7029	251	{
84b1fd10	252	struct drm_device *dev;
c94f7029 DA	253	int ret;
	254
	255	DRM_DEBUG("\n");
	256
	257	dev = drm_calloc(1, sizeof(*dev), DRM_MEM_STUB);
	258	if (!dev)
	259	return -ENOMEM;
	260
2c3f0edd JG	261	ret = pci_enable_device(pdev);
	262	if (ret)
	263	goto err_g1;
c94f7029	264
19a8f59a	265	pci_set_master(pdev);
c94f7029 DA	266	if ((ret = drm_fill_in_dev(dev, pdev, ent, driver))) {
c94f7029 DA	267	printk(KERN_ERR "DRM: Fill_in_dev failed.\n");
2c3f0edd	268	goto err_g2;
c94f7029	269	}
2c14f28b	270	if ((ret = drm_get_minor(dev, &dev->primary, DRM_MINOR_LEGACY)))
2c3f0edd	271	goto err_g2;
bc5f4523	272
22eae947 DA	273	DRM_INFO("Initialized %s %d.%d.%d %s on minor %d\n",
22eae947 DA	274	driver->name, driver->major, driver->minor, driver->patchlevel,
2c14f28b	275	driver->date, dev->primary->index);
c94f7029 DA	276
	277	return 0;
	278
2c3f0edd JG	279	err_g2:
	280	pci_disable_device(pdev);
	281	err_g1:
c94f7029 DA	282	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
	283	return ret;
	284	}
b5e89ed5	285
1da177e4 LT	286	/**
	287	* Put a device minor number.
	288	*
	289	* \param dev device data structure
	290	* \return always zero
	291	*
	292	* Cleans up the proc resources. If it is the last minor then release the foreign
	293	* "drm" data, otherwise unregisters the "drm" data, frees the dev list and
	294	* unregisters the character device.
	295	*/
84b1fd10	296	int drm_put_dev(struct drm_device * dev)
1da177e4 LT	297	{
	298	DRM_DEBUG("release primary %s\n", dev->driver->pci_driver.name);
	299
	300	if (dev->unique) {
	301	drm_free(dev->unique, strlen(dev->unique) + 1, DRM_MEM_DRIVER);
	302	dev->unique = NULL;
	303	dev->unique_len = 0;
	304	}
	305	if (dev->devname) {
	306	drm_free(dev->devname, strlen(dev->devname) + 1,
	307	DRM_MEM_DRIVER);
	308	dev->devname = NULL;
	309	}
	310	drm_free(dev, sizeof(*dev), DRM_MEM_STUB);
	311	return 0;
	312	}
	313
	314	/**
	315	* Put a secondary minor number.
	316	*
	317	* \param sec_minor - structure to be released
	318	* \return always zero
	319	*
	320	* Cleans up the proc resources. Not legal for this to be the
	321	* last minor released.
	322	*
	323	*/
2c14f28b	324	int drm_put_minor(struct drm_minor **minor_p)
1da177e4	325	{
2c14f28b	326	struct drm_minor minor = minor_p;
673a394b	327
2c14f28b	328	DRM_DEBUG("release secondary minor %d\n", minor->index);
b5e89ed5	329
2c14f28b DA	330	if (minor->type == DRM_MINOR_LEGACY)
	331	drm_proc_cleanup(minor, drm_proc_root);
	332	drm_sysfs_device_remove(minor);
1da177e4	333
2c14f28b	334	idr_remove(&drm_minors_idr, minor->index);
b5e89ed5	335
2c14f28b DA	336	kfree(minor);
2c14f28b DA	337	*minor_p = NULL;
1da177e4 LT	338	return 0;
1da177e4 LT	339	}