From a49afeb4165361819b92b7991b97457bac4c674c Mon Sep 17 00:00:00 2001 From: Danilo Krummrich Date: Fri, 1 Jul 2022 20:52:56 +0200 Subject: [PATCH] drm: use idr_init_base() to initialize master->magic_map idr_init_base(), implemented by commit 6ce711f27500 ("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: Danilo Krummrich Signed-off-by: Maxime Ripard Link: https://lore.kernel.org/r/20220701185303.284082-4-dakr@redhat.com --- drivers/gpu/drm/drm_auth.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_auth.c b/drivers/gpu/drm/drm_auth.c index 6e433d465f41d..63395bebaa6b9 100644 --- a/drivers/gpu/drm/drm_auth.c +++ b/drivers/gpu/drm/drm_auth.c @@ -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 */ -- 2.30.2