[PATCH 07/10] drm/sis: use idr_init_base() to initialize dev_priv->object_idr

From: dakr
Date: Fri Jul 01 2022 - 14:53:34 EST


From: Danilo Krummrich <dakr@xxxxxxxxxx>

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 <dakr@xxxxxxxxxx>
---
drivers/gpu/drm/sis/sis_drv.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/sis/sis_drv.c b/drivers/gpu/drm/sis/sis_drv.c
index e35e719cf315..6173020a9bf5 100644
--- a/drivers/gpu/drm/sis/sis_drv.c
+++ b/drivers/gpu/drm/sis/sis_drv.c
@@ -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;

--
2.36.1