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authorDave Airlie <airlied@redhat.com>2016-11-30 14:18:51 +1000
committerDave Airlie <airlied@redhat.com>2016-11-30 14:18:51 +1000
commit63207455963053ca212e61c75f43b3502ea69f0e (patch)
tree96b2bbcee059a41eb580c17a6c473a259189072a /drivers/gpu/drm/drm_drv.c
parent7625e05286cf3f37c8a5e633379a4d014ddbe555 (diff)
parent348a4b6dd77d183ef4ea67673ecf30a09ae3f9d7 (diff)
downloadop-kernel-dev-63207455963053ca212e61c75f43b3502ea69f0e.zip
op-kernel-dev-63207455963053ca212e61c75f43b3502ea69f0e.tar.gz
Merge tag 'drm-qemu-20161121' of git://git.kraxel.org/linux into drm-next
drm/virtio: fix busid in a different way, allocate more vbufs. drm/qxl: various bugfixes and cleanups, * tag 'drm-qemu-20161121' of git://git.kraxel.org/linux: (224 commits) drm/virtio: allocate some extra bufs qxl: Allow resolution which are not multiple of 8 qxl: Don't notify userspace when monitors config is unchanged qxl: Remove qxl_bo_init() return value qxl: Call qxl_gem_{init, fini} qxl: Add missing '\n' to qxl_io_log() call qxl: Remove unused prototype qxl: Mark some internal functions as static Revert "drm: virtio: reinstate drm_virtio_set_busid()" drm/virtio: fix busid regression drm: re-export drm_dev_set_unique Linux 4.9-rc5 gp8psk: Fix DVB frontend attach gp8psk: fix gp8psk_usb_in_op() logic dvb-usb: move data_mutex to struct dvb_usb_device iio: maxim_thermocouple: detect invalid storage size in read() aoe: fix crash in page count manipulation lightnvm: invalid offset calculation for lba_shift Kbuild: enable -Wmaybe-uninitialized warnings by default pcmcia: fix return value of soc_pcmcia_regulator_set ...
Diffstat (limited to 'drivers/gpu/drm/drm_drv.c')
-rw-r--r--drivers/gpu/drm/drm_drv.c38
1 files changed, 24 insertions, 14 deletions
diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 6dbb986..de4da25 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -303,9 +303,10 @@ void drm_minor_release(struct drm_minor *minor)
* callbacks implemented by the driver. The driver then needs to initialize all
* the various subsystems for the drm device like memory management, vblank
* handling, modesetting support and intial output configuration plus obviously
- * initialize all the corresponding hardware bits. Finally when everything is up
- * and running and ready for userspace the device instance can be published
- * using drm_dev_register().
+ * initialize all the corresponding hardware bits. An important part of this is
+ * also calling drm_dev_set_unique() to set the userspace-visible unique name of
+ * this device instance. Finally when everything is up and running and ready for
+ * userspace the device instance can be published using drm_dev_register().
*
* There is also deprecated support for initalizing device instances using
* bus-specific helpers and the ->load() callback. But due to
@@ -327,17 +328,6 @@ void drm_minor_release(struct drm_minor *minor)
* dev_priv field of &drm_device.
*/
-static int drm_dev_set_unique(struct drm_device *dev, const char *name)
-{
- if (!name)
- return -EINVAL;
-
- kfree(dev->unique);
- dev->unique = kstrdup(name, GFP_KERNEL);
-
- return dev->unique ? 0 : -ENOMEM;
-}
-
/**
* drm_put_dev - Unregister and release a DRM device
* @dev: DRM device
@@ -760,6 +750,26 @@ void drm_dev_unregister(struct drm_device *dev)
}
EXPORT_SYMBOL(drm_dev_unregister);
+/**
+ * drm_dev_set_unique - Set the unique name of a DRM device
+ * @dev: device of which to set the unique name
+ * @name: unique name
+ *
+ * Sets the unique name of a DRM device using the specified string. Drivers
+ * can use this at driver probe time if the unique name of the devices they
+ * drive is static.
+ *
+ * Return: 0 on success or a negative error code on failure.
+ */
+int drm_dev_set_unique(struct drm_device *dev, const char *name)
+{
+ kfree(dev->unique);
+ dev->unique = kstrdup(name, GFP_KERNEL);
+
+ return dev->unique ? 0 : -ENOMEM;
+}
+EXPORT_SYMBOL(drm_dev_set_unique);
+
/*
* DRM Core
* The DRM core module initializes all global DRM objects and makes them
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