diff options
| author | Thierry Reding <treding@nvidia.com> | 2014-04-11 17:23:00 +0400 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2014-06-06 01:14:32 +0400 |
| commit | ca8e2ad71013049bc88a10b11d83712bfe56cdd4 (patch) | |
| tree | a49755ebe6640e63d9c30d0e3df608f1ad8c26b8 /drivers/gpu/drm/drm_ioctl.c | |
| parent | 0c7dfd36b73be6d2755f7b724e5ce0bffaf04dd3 (diff) | |
| download | linux-ca8e2ad71013049bc88a10b11d83712bfe56cdd4.tar.xz | |
drm: Introduce drm_dev_set_unique()
Add a helper function that allows drivers to statically set the unique
name of the device. This will allow platform and USB drivers to get rid
of their DRM bus implementations and directly use drm_dev_alloc() and
drm_dev_register().
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Reviewed-by: David Herrmann <dh.herrmann@gmail.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Diffstat (limited to 'drivers/gpu/drm/drm_ioctl.c')
| -rw-r--r-- | drivers/gpu/drm/drm_ioctl.c | 24 |
1 files changed, 18 insertions, 6 deletions
diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c index 38269d5aa333..69c61f392e66 100644 --- a/drivers/gpu/drm/drm_ioctl.c +++ b/drivers/gpu/drm/drm_ioctl.c @@ -131,13 +131,25 @@ static int drm_set_busid(struct drm_device *dev, struct drm_file *file_priv) if (master->unique != NULL) drm_unset_busid(dev, master); - ret = dev->driver->bus->set_busid(dev, master); - if (ret) - goto err; + if (dev->driver->bus && dev->driver->bus->set_busid) { + ret = dev->driver->bus->set_busid(dev, master); + if (ret) { + drm_unset_busid(dev, master); + return ret; + } + } else { + if (WARN(dev->unique == NULL, + "No drm_bus.set_busid() implementation provided by " + "%ps. Use drm_dev_set_unique() to set the unique " + "name explicitly.", dev->driver)) + return -EINVAL; + + master->unique = kstrdup(dev->unique, GFP_KERNEL); + if (master->unique) + master->unique_len = strlen(dev->unique); + } + return 0; -err: - drm_unset_busid(dev, master); - return ret; } /** |