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Diffstat (limited to 'linux-core/drm_fops.c')
-rw-r--r--linux-core/drm_fops.c39
1 files changed, 18 insertions, 21 deletions
diff --git a/linux-core/drm_fops.c b/linux-core/drm_fops.c
index 0e1c486c..7fe274a2 100644
--- a/linux-core/drm_fops.c
+++ b/linux-core/drm_fops.c
@@ -128,16 +128,15 @@ static int drm_setup(struct drm_device * dev)
int drm_open(struct inode *inode, struct file *filp)
{
struct drm_device *dev = NULL;
- int minor = iminor(inode);
+ int minor_id = iminor(inode);
+ struct drm_minor *minor;
int retcode = 0;
- if (!((minor >= 0) && (minor < drm_cards_limit)))
+ minor = idr_find(&drm_minors_idr, minor_id);
+ if (!minor)
return -ENODEV;
- if (!drm_heads[minor])
- return -ENODEV;
-
- if (!(dev = drm_heads[minor]->dev))
+ if (!(dev = minor->dev))
return -ENODEV;
retcode = drm_open_helper(inode, filp, dev);
@@ -176,19 +175,18 @@ EXPORT_SYMBOL(drm_open);
int drm_stub_open(struct inode *inode, struct file *filp)
{
struct drm_device *dev = NULL;
- int minor = iminor(inode);
+ struct drm_minor *minor;
+ int minor_id = iminor(inode);
int err = -ENODEV;
const struct file_operations *old_fops;
DRM_DEBUG("\n");
- if (!((minor >= 0) && (minor < drm_cards_limit)))
+ minor = idr_find(&drm_minors_idr, minor_id);
+ if (!minor)
return -ENODEV;
-
- if (!drm_heads[minor])
- return -ENODEV;
-
- if (!(dev = drm_heads[minor]->dev))
+
+ if (!(dev = minor->dev))
return -ENODEV;
old_fops = filp->f_op;
@@ -233,7 +231,7 @@ static int drm_cpu_valid(void)
static int drm_open_helper(struct inode *inode, struct file *filp,
struct drm_device * dev)
{
- int minor = iminor(inode);
+ int minor_id = iminor(inode);
struct drm_file *priv;
int ret;
int i, j;
@@ -243,7 +241,7 @@ static int drm_open_helper(struct inode *inode, struct file *filp,
if (!drm_cpu_valid())
return -EINVAL;
- DRM_DEBUG("pid = %d, minor = %d\n", current->pid, minor);
+ DRM_DEBUG("pid = %d, minor = %d\n", current->pid, minor_id);
priv = drm_alloc(sizeof(*priv), DRM_MEM_FILES);
if (!priv)
@@ -254,8 +252,7 @@ static int drm_open_helper(struct inode *inode, struct file *filp,
priv->filp = filp;
priv->uid = current->euid;
priv->pid = current->pid;
- priv->minor = minor;
- priv->head = drm_heads[minor];
+ priv->minor = idr_find(&drm_minors_idr, minor_id);
priv->ioctl_count = 0;
/* for compatibility root is always authenticated */
priv->authenticated = capable(CAP_SYS_ADMIN);
@@ -320,11 +317,11 @@ static int drm_open_helper(struct inode *inode, struct file *filp,
int drm_fasync(int fd, struct file *filp, int on)
{
struct drm_file *priv = filp->private_data;
- struct drm_device *dev = priv->head->dev;
+ struct drm_device *dev = priv->minor->dev;
int retcode;
DRM_DEBUG("fd = %d, device = 0x%lx\n", fd,
- (long)old_encode_dev(priv->head->device));
+ (long)old_encode_dev(priv->minor->device));
retcode = fasync_helper(fd, filp, on, &dev->buf_async);
if (retcode < 0)
return retcode;
@@ -374,7 +371,7 @@ static void drm_object_release(struct file *filp)
int drm_release(struct inode *inode, struct file *filp)
{
struct drm_file *file_priv = filp->private_data;
- struct drm_device *dev = file_priv->head->dev;
+ struct drm_device *dev = file_priv->minor->dev;
int retcode = 0;
lock_kernel();
@@ -389,7 +386,7 @@ int drm_release(struct inode *inode, struct file *filp)
*/
DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
- current->pid, (long)old_encode_dev(file_priv->head->device),
+ current->pid, (long)old_encode_dev(file_priv->minor->device),
dev->open_count);
if (dev->driver->reclaim_buffers_locked && dev->lock.hw_lock) {