| From | John Stultz <> | Subject | [PATCH 078/115] ion: don't use id 0 for handle cookie | Date | Fri, 13 Dec 2013 14:24:52 -0800 |
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From: Colin Cross <ccross@android.com>
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 <ccross@android.com> [jstultz: modified patch to apply to staging directory] Signed-off-by: John Stultz <john.stultz@linaro.org> --- 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 ef0b2d7..273ec3a 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); -- 1.8.3.2
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