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drm/sis: use idr_init_base() to initialize dev_priv->object_idr

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idr_init_base(), implemented by commit 6ce711f275 ("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 <dakr@redhat.com>
Signed-off-by: Maxime Ripard <maxime@cerno.tech>
Link: https://lore.kernel.org/r/20220701185303.284082-8-dakr@redhat.com
This commit is contained in:
Danilo Krummrich 2022-07-01 20:53:00 +02:00 committed by Maxime Ripard
parent 1d4f70a65f
commit bf8afc2090
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1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/sis/sis_drv.c
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@ -50,7 +50,7 @@ static int sis_driver_load(struct drm_device *dev, unsigned long chipset)
if (dev_priv == NULL)
return -ENOMEM;
idr_init(&dev_priv->object_idr);
idr_init_base(&dev_priv->object_idr, 1);
dev->dev_private = (void *)dev_priv;
dev_priv->chipset = chipset;