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drm: remove redundant minor->device field 

Whenever we access minor->device, we are in a minor->kdev->...->fops
callback so the minor->kdev pointer *must* be valid. Thus, simply use
minor->kdev->devt instead of minor->device and remove the redundant field.

Signed-off-by: David Herrmann <dh.herrmann@gmail.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
This commit is contained in:
David Herrmann 2014-01-29 13:12:31 +01:00
parent cb0f93238b
commit 5817878c6f
4 changed files with 3 additions and 5 deletions
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4
drivers/gpu/drm/drm_drv.c
View File

@ -344,7 +344,7 @@ long drm_ioctl(struct file *filp,
DRM_DEBUG("pid=%d, dev=0x%lx, auth=%d, %s\n",
task_pid_nr(current),
(long)old_encode_dev(file_priv->minor->device),
(long)old_encode_dev(file_priv->minor->kdev->devt),
file_priv->authenticated, ioctl->name);
/* Do not trust userspace, use our own definition */
@ -402,7 +402,7 @@ long drm_ioctl(struct file *filp,
if (!ioctl)
DRM_DEBUG("invalid ioctl: pid=%d, dev=0x%lx, auth=%d, cmd=0x%02x, nr=0x%02x\n",
task_pid_nr(current),
(long)old_encode_dev(file_priv->minor->device),
(long)old_encode_dev(file_priv->minor->kdev->devt),
file_priv->authenticated, cmd, nr);
if (kdata != stack_kdata)

2
drivers/gpu/drm/drm_fops.c
View File

@ -471,7 +471,7 @@ int drm_release(struct inode *inode, struct file *filp)
DRM_DEBUG("pid = %d, device = 0x%lx, open_count = %d\n",
task_pid_nr(current),
(long)old_encode_dev(file_priv->minor->device),
(long)old_encode_dev(file_priv->minor->kdev->devt),
dev->open_count);
/* Release any auth tokens that might point to this file_priv,

1
drivers/gpu/drm/drm_stub.c
View File

@ -318,7 +318,6 @@ static int drm_minor_register(struct drm_device *dev, unsigned int type)
if (minor_id < 0)
return minor_id;
new_minor->device = MKDEV(DRM_MAJOR, minor_id);
new_minor->index = minor_id;
idr_replace(&drm_minors_idr, new_minor, minor_id);

1
include/drm/drmP.h
View File

@ -1043,7 +1043,6 @@ struct drm_info_node {
struct drm_minor {
int index; /**< Minor device number */
int type; /**< Control or render */
dev_t device; /**< Device number for mknod */
struct device *kdev; /**< Linux device */
struct drm_device *dev;