diff mbox

ieee802154: mcr20a: Fix memory leak in mcr20a_probe

Message ID 20180405162006.GA2199@embeddedor.com (mailing list archive)
State Accepted
Headers show

Commit Message

Gustavo A. R. Silva April 5, 2018, 4:20 p.m. UTC
Free allocated memory for pdata before return.

Addresses-Coverity-ID: 1466096 ("Resource leak")
Fixes: 8c6ad9cc5157 ("ieee802154: Add NXP MCR20A IEEE 802.15.4 transceiver driver")
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
---
 drivers/net/ieee802154/mcr20a.c | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

Comments

Xue Liu April 10, 2018, 9:54 a.m. UTC | #1
Hallo,

Thanks for the fix. It looks good.

ACK-by: Xue Liu <liuxuenetmail@gmail.com>

On 5 April 2018 at 18:20, Gustavo A. R. Silva <gustavo@embeddedor.com> wrote:
> Free allocated memory for pdata before return.
>
> Addresses-Coverity-ID: 1466096 ("Resource leak")
> Fixes: 8c6ad9cc5157 ("ieee802154: Add NXP MCR20A IEEE 802.15.4 transceiver driver")
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
> ---
>  drivers/net/ieee802154/mcr20a.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/ieee802154/mcr20a.c b/drivers/net/ieee802154/mcr20a.c
> index 55a22c7..944470d 100644
> --- a/drivers/net/ieee802154/mcr20a.c
> +++ b/drivers/net/ieee802154/mcr20a.c
> @@ -1267,7 +1267,7 @@ mcr20a_probe(struct spi_device *spi)
>         ret = mcr20a_get_platform_data(spi, pdata);
>         if (ret < 0) {
>                 dev_crit(&spi->dev, "mcr20a_get_platform_data failed.\n");
> -               return ret;
> +               goto free_pdata;
>         }
>
>         /* init reset gpio */
> @@ -1275,7 +1275,7 @@ mcr20a_probe(struct spi_device *spi)
>                 ret = devm_gpio_request_one(&spi->dev, pdata->rst_gpio,
>                                             GPIOF_OUT_INIT_HIGH, "reset");
>                 if (ret)
> -                       return ret;
> +                       goto free_pdata;
>         }
>
>         /* reset mcr20a */
> @@ -1291,7 +1291,8 @@ mcr20a_probe(struct spi_device *spi)
>         hw = ieee802154_alloc_hw(sizeof(*lp), &mcr20a_hw_ops);
>         if (!hw) {
>                 dev_crit(&spi->dev, "ieee802154_alloc_hw failed\n");
> -               return -ENOMEM;
> +               ret = -ENOMEM;
> +               goto free_pdata;
>         }
>
>         /* init mcr20a local data */
> @@ -1366,6 +1367,8 @@ mcr20a_probe(struct spi_device *spi)
>
>  free_dev:
>         ieee802154_free_hw(lp->hw);
> +free_pdata:
> +       kfree(pdata);
>
>         return ret;
>  }
> --
> 2.7.4
>
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Stefan Schmidt April 10, 2018, 10:26 a.m. UTC | #2
Hello.


On 04/10/2018 11:54 AM, Xue Liu wrote:
> Hallo,
>
> Thanks for the fix. It looks good.
>
> ACK-by: Xue Liu <liuxuenetmail@gmail.com>

Thanks for the ACK Xue. The correct format would be

Acked-by: Xue Liu <liuxuenetmail@gmail.com>

That way patchwork also picks the ACK up and adds it to the patch before I apply it from there.

No worries, I did this manually for you this time. For the next time please use the correct format to have this tracked.

regards
Stefan Schmidt
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Stefan Schmidt April 10, 2018, 10:58 a.m. UTC | #3
Hello.


On 04/05/2018 06:20 PM, Gustavo A. R. Silva wrote:
> Free allocated memory for pdata before return.
>
> Addresses-Coverity-ID: 1466096 ("Resource leak")
> Fixes: 8c6ad9cc5157 ("ieee802154: Add NXP MCR20A IEEE 802.15.4 transceiver driver")
> Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
> ---
>  drivers/net/ieee802154/mcr20a.c | 9 ++++++---
>  1 file changed, 6 insertions(+), 3 deletions(-)
>
> diff --git a/drivers/net/ieee802154/mcr20a.c b/drivers/net/ieee802154/mcr20a.c
> index 55a22c7..944470d 100644
> --- a/drivers/net/ieee802154/mcr20a.c
> +++ b/drivers/net/ieee802154/mcr20a.c
> @@ -1267,7 +1267,7 @@ mcr20a_probe(struct spi_device *spi)
>  	ret = mcr20a_get_platform_data(spi, pdata);
>  	if (ret < 0) {
>  		dev_crit(&spi->dev, "mcr20a_get_platform_data failed.\n");
> -		return ret;
> +		goto free_pdata;
>  	}
>  
>  	/* init reset gpio */
> @@ -1275,7 +1275,7 @@ mcr20a_probe(struct spi_device *spi)
>  		ret = devm_gpio_request_one(&spi->dev, pdata->rst_gpio,
>  					    GPIOF_OUT_INIT_HIGH, "reset");
>  		if (ret)
> -			return ret;
> +			goto free_pdata;
>  	}
>  
>  	/* reset mcr20a */
> @@ -1291,7 +1291,8 @@ mcr20a_probe(struct spi_device *spi)
>  	hw = ieee802154_alloc_hw(sizeof(*lp), &mcr20a_hw_ops);
>  	if (!hw) {
>  		dev_crit(&spi->dev, "ieee802154_alloc_hw failed\n");
> -		return -ENOMEM;
> +		ret = -ENOMEM;
> +		goto free_pdata;
>  	}
>  
>  	/* init mcr20a local data */
> @@ -1366,6 +1367,8 @@ mcr20a_probe(struct spi_device *spi)
>  
>  free_dev:
>  	ieee802154_free_hw(lp->hw);
> +free_pdata:
> +	kfree(pdata);
>  
>  	return ret;
>  }

This patch has been applied to the wpan tree and will be
part of the next pull request to net. Thanks!

regards
Stefan Schmidt
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diff mbox

Patch

diff --git a/drivers/net/ieee802154/mcr20a.c b/drivers/net/ieee802154/mcr20a.c
index 55a22c7..944470d 100644
--- a/drivers/net/ieee802154/mcr20a.c
+++ b/drivers/net/ieee802154/mcr20a.c
@@ -1267,7 +1267,7 @@  mcr20a_probe(struct spi_device *spi)
 	ret = mcr20a_get_platform_data(spi, pdata);
 	if (ret < 0) {
 		dev_crit(&spi->dev, "mcr20a_get_platform_data failed.\n");
-		return ret;
+		goto free_pdata;
 	}
 
 	/* init reset gpio */
@@ -1275,7 +1275,7 @@  mcr20a_probe(struct spi_device *spi)
 		ret = devm_gpio_request_one(&spi->dev, pdata->rst_gpio,
 					    GPIOF_OUT_INIT_HIGH, "reset");
 		if (ret)
-			return ret;
+			goto free_pdata;
 	}
 
 	/* reset mcr20a */
@@ -1291,7 +1291,8 @@  mcr20a_probe(struct spi_device *spi)
 	hw = ieee802154_alloc_hw(sizeof(*lp), &mcr20a_hw_ops);
 	if (!hw) {
 		dev_crit(&spi->dev, "ieee802154_alloc_hw failed\n");
-		return -ENOMEM;
+		ret = -ENOMEM;
+		goto free_pdata;
 	}
 
 	/* init mcr20a local data */
@@ -1366,6 +1367,8 @@  mcr20a_probe(struct spi_device *spi)
 
 free_dev:
 	ieee802154_free_hw(lp->hw);
+free_pdata:
+	kfree(pdata);
 
 	return ret;
 }