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drm/dp: Use non-cyclic idr 

In preparation for adding aux devices for DP MST, make the IDR
non-cyclic. That way, hotplug cycling MST devices won't needlessly
increment the minor version index.

Signed-off-by: Leo Li <sunpeng.li@amd.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Reviewed-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20190723232808.28128-2-sunpeng.li@amd.com
This commit is contained in:
Leo Li 2019-07-23 19:28:00 -04:00 committed by Harry Wentland
parent 0005cbda43
commit 3935ec4a11
1 changed files with 1 additions and 2 deletions
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3
drivers/gpu/drm/drm_dp_aux_dev.c
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@ -82,8 +82,7 @@ static struct drm_dp_aux_dev *alloc_drm_dp_aux_dev(struct drm_dp_aux *aux)
kref_init(&aux_dev->refcount);
mutex_lock(&aux_idr_mutex);
index = idr_alloc_cyclic(&aux_idr, aux_dev, 0, DRM_AUX_MINORS,
GFP_KERNEL);
index = idr_alloc(&aux_idr, aux_dev, 0, DRM_AUX_MINORS, GFP_KERNEL);
mutex_unlock(&aux_idr_mutex);
if (index < 0) {
kfree(aux_dev);