diff options
Diffstat (limited to 'drivers/char/drm/drm_auth.c')
| -rw-r--r-- | drivers/char/drm/drm_auth.c | 68 |
1 files changed, 35 insertions, 33 deletions
diff --git a/drivers/char/drm/drm_auth.c b/drivers/char/drm/drm_auth.c index dd140bca8f71..a47b502bc7cc 100644 --- a/drivers/char/drm/drm_auth.c +++ b/drivers/char/drm/drm_auth.c @@ -1,5 +1,5 @@ /** - * \file drm_auth.h + * \file drm_auth.c * IOCTLs for authentication * * \author Rickard E. (Rik) Faith <faith@valinux.com> @@ -46,7 +46,7 @@ */ static int drm_hash_magic(drm_magic_t magic) { - return magic & (DRM_HASH_SIZE-1); + return magic & (DRM_HASH_SIZE - 1); } /** @@ -59,11 +59,11 @@ static int drm_hash_magic(drm_magic_t magic) * the one with matching magic number, while holding the drm_device::struct_sem * lock. */ -static drm_file_t *drm_find_file(drm_device_t *dev, drm_magic_t magic) +static drm_file_t *drm_find_file(drm_device_t * dev, drm_magic_t magic) { - drm_file_t *retval = NULL; + drm_file_t *retval = NULL; drm_magic_entry_t *pt; - int hash = drm_hash_magic(magic); + int hash = drm_hash_magic(magic); down(&dev->struct_sem); for (pt = dev->magiclist[hash].head; pt; pt = pt->next) { @@ -78,7 +78,7 @@ static drm_file_t *drm_find_file(drm_device_t *dev, drm_magic_t magic) /** * Adds a magic number. - * + * * \param dev DRM device. * \param priv file private data. * \param magic magic number. @@ -87,28 +87,30 @@ static drm_file_t *drm_find_file(drm_device_t *dev, drm_magic_t magic) * associated the magic number hash key in drm_device::magiclist, while holding * the drm_device::struct_sem lock. */ -static int drm_add_magic(drm_device_t *dev, drm_file_t *priv, drm_magic_t magic) +static int drm_add_magic(drm_device_t * dev, drm_file_t * priv, + drm_magic_t magic) { - int hash; + int hash; drm_magic_entry_t *entry; DRM_DEBUG("%d\n", magic); - hash = drm_hash_magic(magic); - entry = drm_alloc(sizeof(*entry), DRM_MEM_MAGIC); - if (!entry) return -ENOMEM; + hash = drm_hash_magic(magic); + entry = drm_alloc(sizeof(*entry), DRM_MEM_MAGIC); + if (!entry) + return -ENOMEM; memset(entry, 0, sizeof(*entry)); entry->magic = magic; - entry->priv = priv; - entry->next = NULL; + entry->priv = priv; + entry->next = NULL; down(&dev->struct_sem); if (dev->magiclist[hash].tail) { dev->magiclist[hash].tail->next = entry; - dev->magiclist[hash].tail = entry; + dev->magiclist[hash].tail = entry; } else { - dev->magiclist[hash].head = entry; - dev->magiclist[hash].tail = entry; + dev->magiclist[hash].head = entry; + dev->magiclist[hash].tail = entry; } up(&dev->struct_sem); @@ -117,19 +119,18 @@ static int drm_add_magic(drm_device_t *dev, drm_file_t *priv, drm_magic_t magic) /** * Remove a magic number. - * + * * \param dev DRM device. * \param magic magic number. * * Searches and unlinks the entry in drm_device::magiclist with the magic * number hash key, while holding the drm_device::struct_sem lock. */ -static int drm_remove_magic(drm_device_t *dev, drm_magic_t magic) +static int drm_remove_magic(drm_device_t * dev, drm_magic_t magic) { drm_magic_entry_t *prev = NULL; drm_magic_entry_t *pt; - int hash; - + int hash; DRM_DEBUG("%d\n", magic); hash = drm_hash_magic(magic); @@ -171,21 +172,22 @@ static int drm_remove_magic(drm_device_t *dev, drm_magic_t magic) * filp. */ int drm_getmagic(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg) + unsigned int cmd, unsigned long arg) { static drm_magic_t sequence = 0; static DEFINE_SPINLOCK(lock); - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->head->dev; - drm_auth_t auth; + drm_file_t *priv = filp->private_data; + drm_device_t *dev = priv->head->dev; + drm_auth_t auth; - /* Find unique magic */ + /* Find unique magic */ if (priv->magic) { auth.magic = priv->magic; } else { do { spin_lock(&lock); - if (!sequence) ++sequence; /* reserve 0 */ + if (!sequence) + ++sequence; /* reserve 0 */ auth.magic = sequence++; spin_unlock(&lock); } while (drm_find_file(dev, auth.magic)); @@ -194,7 +196,7 @@ int drm_getmagic(struct inode *inode, struct file *filp, } DRM_DEBUG("%u\n", auth.magic); - if (copy_to_user((drm_auth_t __user *)arg, &auth, sizeof(auth))) + if (copy_to_user((drm_auth_t __user *) arg, &auth, sizeof(auth))) return -EFAULT; return 0; } @@ -211,14 +213,14 @@ int drm_getmagic(struct inode *inode, struct file *filp, * Checks if \p filp is associated with the magic number passed in \arg. */ int drm_authmagic(struct inode *inode, struct file *filp, - unsigned int cmd, unsigned long arg) + unsigned int cmd, unsigned long arg) { - drm_file_t *priv = filp->private_data; - drm_device_t *dev = priv->head->dev; - drm_auth_t auth; - drm_file_t *file; + drm_file_t *priv = filp->private_data; + drm_device_t *dev = priv->head->dev; + drm_auth_t auth; + drm_file_t *file; - if (copy_from_user(&auth, (drm_auth_t __user *)arg, sizeof(auth))) + if (copy_from_user(&auth, (drm_auth_t __user *) arg, sizeof(auth))) return -EFAULT; DRM_DEBUG("%u\n", auth.magic); if ((file = drm_find_file(dev, auth.magic))) { |
