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drm/ttm: drop sysfs directory 

Not used any more.

Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20210208133226.36955-3-christian.koenig@amd.com
This commit is contained in:
Christian König 2020-12-18 19:55:08 +01:00
parent f07069da6b
commit ed89fff973
2 changed files with 0 additions and 52 deletions
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50
drivers/gpu/drm/ttm/ttm_module.c
View File

@ -37,66 +37,16 @@
#include "ttm_module.h" #include "ttm_module.h"
static DECLARE_WAIT_QUEUE_HEAD(exit_q);
static atomic_t device_released;
struct dentry *ttm_debugfs_root; struct dentry *ttm_debugfs_root;
static struct device_type ttm_drm_class_type = {
.name = "ttm",
/**
* Add pm ops here.
*/
};
static void ttm_drm_class_device_release(struct device *dev)
{
atomic_set(&device_released, 1);
wake_up_all(&exit_q);
}
static struct device ttm_drm_class_device = {
.type = &ttm_drm_class_type,
.release = &ttm_drm_class_device_release
};
struct kobject *ttm_get_kobj(void)
{
struct kobject *kobj = &ttm_drm_class_device.kobj;
BUG_ON(kobj == NULL);
return kobj;
}
static int __init ttm_init(void) static int __init ttm_init(void)
{ {
int ret;
ret = dev_set_name(&ttm_drm_class_device, "ttm");
if (unlikely(ret != 0))
return ret;
atomic_set(&device_released, 0);
ret = drm_class_device_register(&ttm_drm_class_device);
if (unlikely(ret != 0))
goto out_no_dev_reg;
ttm_debugfs_root = debugfs_create_dir("ttm", NULL); ttm_debugfs_root = debugfs_create_dir("ttm", NULL);
return 0; return 0;
out_no_dev_reg:
atomic_set(&device_released, 1);
wake_up_all(&exit_q);
return ret;
} }
static void __exit ttm_exit(void) static void __exit ttm_exit(void)
{ {
drm_class_device_unregister(&ttm_drm_class_device);
/**
* Refuse to unload until the TTM device is released.
* Not sure this is 100% needed.
*/
wait_event(exit_q, atomic_read(&device_released) == 1);
debugfs_remove(ttm_debugfs_root); debugfs_remove(ttm_debugfs_root);
} }

2
drivers/gpu/drm/ttm/ttm_module.h
View File

@ -33,10 +33,8 @@
#define TTM_PFX "[TTM] " #define TTM_PFX "[TTM] "
struct kobject;
struct dentry; struct dentry;
extern struct kobject *ttm_get_kobj(void);
extern struct dentry *ttm_debugfs_root; extern struct dentry *ttm_debugfs_root;
#endif /* _TTM_MODULE_H_ */ #endif /* _TTM_MODULE_H_ */