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drm/vgem: replace idr_init() by idr_init_base()

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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>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20201105173646.GA41732@localhost
This commit is contained in:
Deepak R Varma 2020-11-05 23:06:46 +05:30 committed by Daniel Vetter
parent a5d704d332
commit 05854d482a
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/vgem/vgem_fence.c
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@ -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;
}