[PATCH 2/3] soc: ti: knav_qmss_queue: Fix unbalanced locking in knav_pool_create()

From: Axel Lin
Date: Sun Oct 26 2014 - 05:39:21 EST


Don't call mutex_unlock() in the error patch if the mutex_lock() is not called.

Signed-off-by: Axel Lin <axel.lin@xxxxxxxxxx>
---
drivers/soc/ti/knav_qmss_queue.c | 7 ++++---
1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/drivers/soc/ti/knav_qmss_queue.c b/drivers/soc/ti/knav_qmss_queue.c
index 0a2c863..d66aaf2 100644
--- a/drivers/soc/ti/knav_qmss_queue.c
+++ b/drivers/soc/ti/knav_qmss_queue.c
@@ -785,7 +785,7 @@ void *knav_pool_create(const char *name,
dev_err(kdev->dev, "out of descs in region(%d) for pool(%s)\n",
region_id, name);
ret = -ENOMEM;
- goto err;
+ goto err_unlock;
}

/* Region maintains a sorted (by region offset) list of pools
@@ -815,15 +815,16 @@ void *knav_pool_create(const char *name,
dev_err(kdev->dev, "pool(%s) create failed: fragmented desc pool in region(%d)\n",
name, region_id);
ret = -ENOMEM;
- goto err;
+ goto err_unlock;
}

mutex_unlock(&knav_dev_lock);
kdesc_fill_pool(pool);
return pool;

-err:
+err_unlock:
mutex_unlock(&knav_dev_lock);
+err:
kfree(pool->name);
devm_kfree(kdev->dev, pool);
return ERR_PTR(ret);
--
1.9.1



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