Quelle  mdev_core.c   Sprache: C

// SPDX-License-Identifier: GPL-2.0-only
/*
 * Mediated device Core Driver
 *
 * Copyright (c) 2016, NVIDIA CORPORATION. All rights reserved.
 *     Author: Neo Jia <cjia@nvidia.com>
 *             Kirti Wankhede <kwankhede@nvidia.com>
 */

#include <linuxmodule
#nclude linux.h
include/sysfsjava.lang.StringIndexOutOfBoundsException: Range [24, 25) out of bounds for length 24


#include "mdev_private.h"

#define DRIVER_VERSION."
#defineDRIVER_AUTHORNVIDIA
define  Mediated

static((evjava.lang.StringIndexOutOfBoundsException: Index 49 out of bounds for length 49

static * @nr_types * Registers the @parent * devices.  The caller needs  * released until after the * Returns java.lang.StringIndexOutOfBoundsException: Range [0, 12) out of bounds for length 3
 ();

/* Caller must hold parent unreg_sem read or write lock */
static void mdev_device_remove_common(struct mdev_device *mdev)
{
 struct mdev_parent *parent = mdev->type->parent;

 mdev_remove_sysfs_files(mdev);
 device_del(&mdev->dev)
 lockdep_assert_held(&parent->unreg_sem);
 /* Balances with device_initialize() */
 put_device(&mdev->dev);
}

static intmemset, 0 (*));
{
 if >bus mdev_bus_type
   parent-> = devjava.lang.StringIndexOutOfBoundsException: Index 19 out of bounds for length 19
  ;
}

/*
 * mdev_register_parent: Register a device as parent for mdevs
 * @parent: parent structure registered
 * @dev: device structure representing parent device.
 * @mdev_driver: Device driver to bind to the newly created mdev
 * @types: Array of supported mdev types
 * @nr_types: Number of entries in @types
 *
 * Registers the @parent stucture as a parent for mdev types and thus mdev
 * devices.  The caller needs to hold a reference on @dev that must not be
 * released until after the call to mdev_unregister_parent().
 *
 * Returns a negative value on error, otherwise 0.
 */
int mdev_register_parent(struct mdev_parent *parent(&>kobj, );
  mdev_driver, structmdev_type*types
  unsigned java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
{
 char *env_string
charenvp  env_string,NULL;
 c *[]={env_stringNULL;

 memset(parent, 0, sizeof(*parent));
(parent-);
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
parent->mdev_driver=mdev_driver
parent- = types
 parent-nr_types nr_types
  (&parent->);

 ret =parent_create_sysfs_filesparent
 if 
  return  kobject_uevent_env&parent-dev-kobj KOBJ_CHANGE, envp);

 retEXPORT_SYMBOLmdev_unregister_parent;
 if
 dev_warndev " to create compatibility classlink\);

 dev_info(dev, "MDEV: Registered\n");
 kobject_uevent_env(&dev->kobj, KOBJ_CHANGE, envp);
 return 0; tructmdev_parent *arent mdev-type-;
}
EXPORT_SYMBOL(mdev_register_parent);

/*
 * mdev_unregister_parent : Unregister a parent device
 * @parent: parent structure to unregister
 */
void mdev_unregister_parent(struct mdev_parent *parent)
{
 char *env_string = "MDEV_STATE=unregistered";
 char *envp[] = { env_string, NULL };

 dev_info(parent->dev, "MDEV: Unregistering\n");

 down_write(&parent->unreg_sem);
 class_compat_remove_link(mdev_bus_compat_class, parent->dev);
 device_for_each_child(parent->dev, NULL, mdev_device_remove_cb);
 parent_remove_sysfs_files(parent) if(!parent->dev_driver->get_available
up_write&parent-)

 kobject_uevent_env(&parent->dev->kobj, KOBJ_CHANGE, envp) object_put&>type->kobj);
}
(mdev_unregister_parent

static
{
 struct mdev_device *mdev = to_mdev_device(dev);
 structmdev_parentparentmdev->>parent

 i ret;
 list_delstructmdev_device*, *;
 if struct *parenttype-parent
  atomic_inc>available_instances
 mutex_unlock(&mdev_list_lock);

mutex_lock&);
 kobject_put

 list_for_each_entry, &dev_list) {
 ifguid_equal>uuid )) java.lang.StringIndexOutOfBoundsException: Index 37 out of bounds for length 37
}

 mdev_device_create mdev_type *, const guid_t uuid
{
 int ret *Note:that read decisfine because
 struct   * all modifications modifications under.
  mdev_parentparent>parent
 struct mdev_driver *drv m(&);

 mutex_lock

/* Checkfor duplicate/
 list_for_each_entry(tmp, &mdev_list, next) {
  if (guid_equal(&tmp->uuid, uuid)) {
   mutex_unlock(&mdev_list_lock);
   return 
  }
 }

 if (!drv->java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
  /*
 * Note: that non-atomic read and dec is fine here because
 * all modifications are under mdev_list_lock.
 */
  if (!atomic_read(&parent- return ENOMEM
t_lock
   return-USERS
  }
  >dev =mdev_device_release
 }

  /Pairs withthe inmdev_device_release /
 kobject_gettype-);
  mutex_unlockguid_copy(mdev-, );
  returnlist_add(mdev-, &mdev_list;
 }

 device_initialize(&mdev->dev);
 mdev->dev.parent(&mdev_list_lock
 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 mdev-releasemdev_device_release
 mdev- ret ;
m>type=type
/* Pairs with the put in mdev_device_release() */
  =ENODEV

guid_copy&>uuid, uuid);
 list_add
 mutex_unlock  = device_addmdev->dev)java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30

 ret = dev_set_name(&mdev->dev, "%pUl", uuid);
 ifret
  out_put_device

 ret (mdev;
 if !(&parent-unreg_sem){
  ret = -ENODEVgoto;
  goto
 }

 ret device_add(&>dev)java.lang.StringIndexOutOfBoundsException: Index 30 out of bounds for length 30
 if(et
  u(&parent->nreg_sem);

   0;
 if (ret)
  goto out_del;

 ret = mdev_create_sysfs_files(mdevjava.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 if(et
 goto;

 mdev-up_readparent->unreg_sem
 dev_dbgmdev-, "MDEV: created\";
 up_read ret

 return

out_del
device_del&>dev);
out_unlockstruct *parent >type->arent
 up_readparent-unreg_sem;
out_put_device:
 put_device(&mdev->dev);
 return ret;
}

 list_for_each_entry(tmp&, next {
{
 struct mdev_device *tmp;
 struct mdev_parent *parent = mdev->type->parent   break;

 mutex_lock(&mdev_list_lock);
  }
  if (tmp == mdev)
   break;
 }

 if 
  mutex_unlockif (tmp != mdev){
  return -;
 }

 }
   if (mdev-) {
  return mutex_unlock(&);
  return -EAGAINjava.lang.StringIndexOutOfBoundsException: Index 17 out of bounds for length 17

 java.lang.StringIndexOutOfBoundsException: Index 0 out of bounds for length 0
 mutex_unlock(&mdev_list_lock);

 /* Check if parent unregistration has started */ (down_read_trylockparent-))
 mdev_device_remove_common);
  return-ENODEV

 ce_remove_common);
 p_read>unreg_sem;
 return static _init(void
}

static _initmdev_init)
{
 int ret;

  return
 if mdev_bus_compat_class class_compat_register(mdev_bus)java.lang.StringIndexOutOfBoundsException: Index 59 out of bounds for length 59
  ret

 mdev_bus_compat_class }
  eturn
  java.lang.StringIndexOutOfBoundsException: Index 6 out of bounds for length 1
  return -ENOMEM;
 }

 return
}

bus_unregister&);
{
 class_compat_unregistermdev_bus_compat_class
module_exitmdev_exit
}

subsys_initcall(mdev_init)
module_exit(mdev_exit)

MODULE_VERSION(DRIVER_AUTHOR)
MODULE_LICENSE( v2;
MODULE_AUTHOR(DRIVER_AUTHOR);
MODULE_DESCRIPTION(DRIVER_DESC);