From b4f8d242c6fb5e631ba861c1a6024ae14b02f5a8 Mon Sep 17 00:00:00 2001 From: Colin Cross Date: Fri, 13 Dec 2013 14:24:52 -0800 Subject: [PATCH] ion: don't use id 0 for handle cookie 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. Signed-off-by: Colin Cross [jstultz: modified patch to apply to staging directory] Signed-off-by: John Stultz Signed-off-by: Greg Kroah-Hartman --- drivers/staging/android/ion/ion.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/staging/android/ion/ion.c b/drivers/staging/android/ion/ion.c index ef0b2d704a7b..273ec3a51fff 100644 --- a/drivers/staging/android/ion/ion.c +++ b/drivers/staging/android/ion/ion.c @@ -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); -- 2.30.2