linux-kernel - [PATCH] remoteproc: fix the error check for idr

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Date:	Wed, 6 Mar 2013 16:56:48 -0600
From:	Suman Anna <s-anna@...com>
To:	<linux-kernel@...r.kernel.org>
CC:	Suman Anna <s-anna@...com>, Tejun Heo <tj@...nel.org>,
	Ohad Ben-Cohen <ohad@...ery.com>
Subject: [PATCH] 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@...com>
Cc: Tejun Heo <tj@...nel.org>
Cc: Ohad Ben-Cohen <ohad@...ery.com>
---
 drivers/remoteproc/remoteproc_core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/remoteproc/remoteproc_core.c b/drivers/remoteproc/remoteproc_core.c
index 29387df..fb0fb34 100644
--- 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;
-- 
1.8.1.2

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