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staging: vt6655: add handling memory leak on vnt_start()

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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() would be failed. Add freeing sequences of irq and
device init rings.

Signed-off-by: Ji-Hun Kim <ji_hun.kim@samsung.com>
Reviewed-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ji-Hun Kim 2018-04-05 16:09:20 +09:00 committed by Greg Kroah-Hartman
parent 5341ee0adb
commit 1dc751a5b5
1 changed files with 6 additions and 2 deletions
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8
drivers/staging/vt6655/device_main.c
View file

@ -1237,13 +1237,13 @@ static int vnt_start(struct ieee80211_hw *hw)
IRQF_SHARED, "vt6655", priv);
if (ret) {
dev_dbg(&priv->pcid->dev, "failed to start irq\n");
return ret;
goto err_free_rings;
}
dev_dbg(&priv->pcid->dev, "call device init rd0 ring\n");
ret = device_init_rd0_ring(priv);
if (ret)
return ret;
goto err_free_irq;
ret = device_init_rd1_ring(priv);
if (ret)
goto err_free_rd0_ring;
@ -1269,6 +1269,10 @@ static int vnt_start(struct ieee80211_hw *hw)
device_free_rd1_ring(priv);
err_free_rd0_ring:
device_free_rd0_ring(priv);
err_free_irq:
free_irq(priv->pcid->irq, priv);
err_free_rings:
device_free_rings(priv);
return ret;
}