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ion: don't use id 0 for handle cookie

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ion userspace clients think that the cookie is a pointer, so they
use NULL to check if the handle has been initialized.  Set the first
id number to 1.

Change-Id: Ifb9af6029a8b08f57e41bc6160cc11e11001a2a9
Signed-off-by: Colin Cross <ccross@android.com>
This commit is contained in:
Colin Cross
2013-08-22 19:29:44 -07:00
parent 002119eeb2
commit 66df93b4c9
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/ion/ion.c
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@@ -424,7 +424,7 @@ static int ion_handle_add(struct ion_client *client, struct ion_handle *handle)
rc = idr_pre_get(&client->idr, GFP_KERNEL);
if (!rc)
return -ENOMEM;
rc = idr_get_new(&client->idr, handle, &id);
rc = idr_get_new_above(&client->idr, handle, 1, &id);
handle->id = id;
} while (rc == -EAGAIN);