Unverified Commit a49afeb4 authored by Danilo Krummrich's avatar Danilo Krummrich Committed by Maxime Ripard
Browse files

drm: use idr_init_base() to initialize master->magic_map 



idr_init_base(), implemented by commit 6ce711f2 ("idr: Make 1-based
IDRs more efficient"), let us set an arbitrary base other than
idr_init(), which uses base 0.

Since, for this IDR, no ID < 1 is ever requested/allocated, using
idr_init_base(&idr, 1) avoids unnecessary tree walks.

Signed-off-by: default avatarDanilo Krummrich <dakr@redhat.com>
Signed-off-by: default avatarMaxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20220701185303.284082-4-dakr@redhat.com
parent c4f306e3

drivers/gpu/drm/drm_auth.c

+1 −1
Original line number Diff line number Diff line
@@ -140,7 +140,7 @@ struct drm_master *drm_master_create(struct drm_device *dev) 


	kref_init(&master->refcount);

	drm_master_legacy_init(master);

	idr_init(&master->magic_map);

	idr_init_base(&master->magic_map, 1);

	master->dev = dev;



	/* initialize the tree of output resource lessees */