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drm/ttm: Fix TTM object open regression 

Commit drm/ttm: ttm object security fixes for render nodes introduced a
regression where, if a TTM object was opened multiple times from the same
open file, the caller would spin uninterruptibly in the kernel.

Fix this.

Signed-off-by: Thomas Hellstrom <thellstrom@vmware.com>
Reviewed-by: Jakob Bornecrantz <jakob@vmware.com>
This commit is contained in:
Thomas Hellstrom 2014-01-24 08:49:45 +01:00
parent 76f4f415e5
commit c66f854338
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/ttm/ttm_object.c
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@ -292,7 +292,7 @@ int ttm_ref_object_add(struct ttm_object_file *tfile,
if (ret == 0) { if (ret == 0) {
ref = drm_hash_entry(hash, struct ttm_ref_object, hash); ref = drm_hash_entry(hash, struct ttm_ref_object, hash);
if (!kref_get_unless_zero(&ref->kref)) { if (kref_get_unless_zero(&ref->kref)) {
rcu_read_unlock(); rcu_read_unlock();
break; break;
} }