On Fri, Mar 30, 2018 at 02:51:55PM +0900, Ji-Hun Kim wrote:
> 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);
There is only one call site. Just change device_init_rings() to return
negative error codes or zero.
> + if (!ret) {
> + ret = -ENOMEM;
> + goto err_init_rings;
Just return directly since there is nothing to clean up.
return -ENOMEM;
> + }
>
> 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;
This is a "come from" label name. It's better if the goto says what the
goto does like "goto err_free_rings;" here.
regards,
dan carpenter
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