linux-kernel - [PATCH] lightnvm: fix wrong return value and remove nvme_free(dev) in nvm

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Date:	Thu, 19 Nov 2015 23:23:52 +0800
From:	Wenwei Tao <ww.tao0320@...il.com>
To:	mb@...htnvm.io
Cc:	linux-kernel@...r.kernel.org
Subject: [PATCH] lightnvm: fix wrong return value and remove nvme_free(dev) in nvm_init()

The return value should be non-zero under error conditions.
Remove nvme_free(dev) to avoid free dev more than once.

Signed-off-by: Wenwei Tao <ww.tao0320@...il.com>
---
 drivers/lightnvm/core.c | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/drivers/lightnvm/core.c b/drivers/lightnvm/core.c
index f659e60..1942752 100644
--- a/drivers/lightnvm/core.c
+++ b/drivers/lightnvm/core.c
@@ -220,14 +220,13 @@ static void nvm_free(struct nvm_dev *dev)
 static int nvm_init(struct nvm_dev *dev)
 {
 	struct nvmm_type *mt;
-	int ret = 0;
+	int ret = -EINVAL;
 
 	if (!dev->q || !dev->ops)
-		return -EINVAL;
+		return ret;
 
 	if (dev->ops->identity(dev->q, &dev->identity)) {
 		pr_err("nvm: device could not be identified\n");
-		ret = -EINVAL;
 		goto err;
 	}
 
@@ -273,7 +272,6 @@ static int nvm_init(struct nvm_dev *dev)
 			dev->nr_chnls);
 	return 0;
 err:
-	nvm_free(dev);
 	pr_err("nvm: failed to initialize nvm\n");
 	return ret;
 }
-- 
1.9.1

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