[PATCH v4 2/2] staging: vt6655: add handling memory leak on vnt_start()

[Ji-Hun Kim]

There was no code for handling memory leaks of device_init_rings() and
request_irq(). It needs to free allocated memory in the device_init_rings()
, when request_irq() is failed. Add freeing sequences of irq and device
init rings.

Signed-off-by: Ji-Hun Kim <ji_hun....@samsung.com>
---
It's additional memory leak handling patch from
[PATCH v4 1/2] staging: vt6655: check for memory allocation failures

 drivers/staging/vt6655/device_main.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/drivers/staging/vt6655/device_main.c 
b/drivers/staging/vt6655/device_main.c
index c9752df..3604f2d 100644
--- a/drivers/staging/vt6655/device_main.c
+++ b/drivers/staging/vt6655/device_main.c
@@ -1194,14 +1194,17 @@ static int vnt_start(struct ieee80211_hw *hw)
        int ret;
 
        priv->rx_buf_sz = PKT_BUF_SZ;
-       if (!device_init_rings(priv))
-               return -ENOMEM;
+       ret = (int)device_init_rings(priv);
+       if (!ret) {
+               ret = -ENOMEM;
+               goto err_init_rings;
+       }
 
        ret = request_irq(priv->pcid->irq, vnt_interrupt,
                          IRQF_SHARED, "vt6655", priv);
        if (ret) {
                dev_dbg(&priv->pcid->dev, "failed to start irq\n");
-               return ret;
+               goto err_irq;
        }
 
        dev_dbg(&priv->pcid->dev, "call device init rd0 ring\n");
@@ -1234,6 +1237,10 @@ static int vnt_start(struct ieee80211_hw *hw)
 err_init_rd1_ring:
        device_free_rd0_ring(priv);
 err_init_rd0_ring:
+       free_irq(priv->pcid->irq, priv);
+err_irq:
+       device_free_rings(priv);
+err_init_rings:
        return ret;
 }
 
-- 
1.9.1