remoteproc: fix the error check for idr_alloc

The new idr_alloc interface returns the allocated id back
on success, so fix the error path to check for negative
values. This was missed out in the newer idr interface
adoption patch, 15fc611 "remoteproc: convert to idr_alloc()".

Signed-off-by: Suman Anna <s-anna@ti.com>
Acked-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Ohad Ben-Cohen <ohad@wizery.com>

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 29387df4bfc9aa40f73cb94a0dcc2b2d0044af68..fb0fb342bf968f9e70b7af8b71f946ef34f72565 100644 (file)
--- a/drivers/remoteproc/remoteproc_core.c
+++ b/drivers/remoteproc/remoteproc_core.c
@@ -217,7 +217,7 @@ int rproc_alloc_vring(struct rproc_vdev *rvdev, int i)
         * TODO: support predefined notifyids (via resource table)
         */
        ret = idr_alloc(&rproc->notifyids, rvring, 0, 0, GFP_KERNEL);
-       if (ret) {
+       if (ret < 0) {
                dev_err(dev, "idr_alloc failed: %d\n", ret);
                dma_free_coherent(dev->parent, size, va, dma);
                return ret;