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From: Deepak R Varma <mh12gx2825@gmail.com>
To: David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Cc: mh12gx2825@gmail.com
Subject: [PATCH] drm/vgm: replace idr_init() by idr_init_base()
Date: Wed, 4 Nov 2020 16:53:38 +0530	[thread overview]
Message-ID: <20201104112338.GA29271@localhost> (raw)

idr_init() uses base 0 which is an invalid identifier. The new function
idr_init_base allows IDR to set the ID lookup from base 1. This avoids
all lookups that otherwise starts from 0 since 0 is always unused.

References: commit 6ce711f27500 ("idr: Make 1-based IDRs more efficient")

Signed-off-by: Deepak R Varma <mh12gx2825@gmail.com>
---
 drivers/gpu/drm/vgem/vgem_fence.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vgem/vgem_fence.c b/drivers/gpu/drm/vgem/vgem_fence.c
index 17f32f550dd9..2902dc6e64fa 100644
--- a/drivers/gpu/drm/vgem/vgem_fence.c
+++ b/drivers/gpu/drm/vgem/vgem_fence.c
@@ -233,7 +233,7 @@ int vgem_fence_signal_ioctl(struct drm_device *dev,
 int vgem_fence_open(struct vgem_file *vfile)
 {
 	mutex_init(&vfile->fence_mutex);
-	idr_init(&vfile->fence_idr);
+	idr_init_base(&vfile->fence_idr, 1);
 
 	return 0;
 }
-- 
2.25.1

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WARNING: multiple messages have this Message-ID (diff)
From: Deepak R Varma <mh12gx2825@gmail.com>
To: David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org
Cc: mh12gx2825@gmail.com
Subject: [PATCH] drm/vgm: replace idr_init() by idr_init_base()
Date: Wed, 4 Nov 2020 16:53:38 +0530	[thread overview]
Message-ID: <20201104112338.GA29271@localhost> (raw)

idr_init() uses base 0 which is an invalid identifier. The new function
idr_init_base allows IDR to set the ID lookup from base 1. This avoids
all lookups that otherwise starts from 0 since 0 is always unused.

References: commit 6ce711f27500 ("idr: Make 1-based IDRs more efficient")

Signed-off-by: Deepak R Varma <mh12gx2825@gmail.com>
---
 drivers/gpu/drm/vgem/vgem_fence.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/vgem/vgem_fence.c b/drivers/gpu/drm/vgem/vgem_fence.c
index 17f32f550dd9..2902dc6e64fa 100644
--- a/drivers/gpu/drm/vgem/vgem_fence.c
+++ b/drivers/gpu/drm/vgem/vgem_fence.c
@@ -233,7 +233,7 @@ int vgem_fence_signal_ioctl(struct drm_device *dev,
 int vgem_fence_open(struct vgem_file *vfile)
 {
 	mutex_init(&vfile->fence_mutex);
-	idr_init(&vfile->fence_idr);
+	idr_init_base(&vfile->fence_idr, 1);
 
 	return 0;
 }
-- 
2.25.1


             reply	other threads:[~2020-11-04 12:19 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-11-04 11:23 Deepak R Varma [this message]
2020-11-04 11:23 ` [PATCH] drm/vgm: replace idr_init() by idr_init_base() Deepak R Varma
2020-11-05  9:42 ` Daniel Vetter
2020-11-05  9:42   ` Daniel Vetter
2020-11-05 10:31   ` Deepak R Varma
2020-11-05 10:31     ` Deepak R Varma
2020-11-05 11:16     ` Daniel Vetter
2020-11-05 11:16       ` Daniel Vetter
2020-11-05 17:40       ` Deepak R Varma
2020-11-05 17:40         ` Deepak R Varma

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