[PATCH v2] drm: register more drm device nodes

[James Zhu]

Since the default number 256 can't handle large modern systems
with large numbers of GPUs, specify a more reasonable default.

-v2: update drm_core_exit to unregister more drm device nodes

Signed-off-by: James Zhu <James.Zhu at amd.com>
---
 drivers/gpu/drm/drm_drv.c | 4 ++--
 include/drm/drm_drv.h     | 2 ++
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpu/drm/drm_drv.c b/drivers/gpu/drm/drm_drv.c
index 243cacb3575c..bfc6c18a7a92 100644
--- a/drivers/gpu/drm/drm_drv.c
+++ b/drivers/gpu/drm/drm_drv.c
@@ -1063,7 +1063,7 @@ static void drm_core_exit(void)
 {
 	drm_privacy_screen_lookup_exit();
 	accel_core_exit();
-	unregister_chrdev(DRM_MAJOR, "drm");
+	__unregister_chrdev(DRM_MAJOR, 0, DRM_CHRDEV_MAX, "drm");
 	debugfs_remove(drm_debugfs_root);
 	drm_sysfs_destroy();
 	idr_destroy(&drm_minors_idr);
@@ -1086,7 +1086,7 @@ static int __init drm_core_init(void)
 
 	drm_debugfs_root = debugfs_create_dir("dri", NULL);
 
-	ret = register_chrdev(DRM_MAJOR, "drm", &drm_stub_fops);
+	ret = __register_chrdev(DRM_MAJOR, 0, DRM_CHRDEV_MAX, "drm", &drm_stub_fops);
 	if (ret < 0)
 		goto error;
 
diff --git a/include/drm/drm_drv.h b/include/drm/drm_drv.h
index 8878260d7529..8a2da92f02b7 100644
--- a/include/drm/drm_drv.h
+++ b/include/drm/drm_drv.h
@@ -45,6 +45,8 @@ struct drm_mode_create_dumb;
 struct drm_printer;
 struct sg_table;
 
+#define DRM_CHRDEV_MAX                1024
+
 /**
  * enum drm_driver_feature - feature flags
  *
-- 
2.34.1