On Fri, Jul 25, 2014 at 12:39 PM, <pramod.gurav.etc@xxxxxxxxx> wrote:
> From: Pramod Gurav <pramod.gurav@xxxxxxxxxxxxxxx>
>
> This patch does below:
> - Removes kfree done on data allocated with devm_zalloc in probe
> path of the driver.
> - Adds a check on return value from devm_kzalloc which was missing
> and renames a lable from err_free_mem to err_mem.
> - Adds couple of dev_err on failure to allocate memory
>
> CC: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx>
> CC: Lejun Zhu <lejun.zhu@xxxxxxxxxxxxxxx>
> CC: Sachin Kamat <sachin.kamat@xxxxxxxxxx>
>
> Signed-off-by: Pramod Gurav <pramod.gurav@xxxxxxxxxxxxxxx>
> ---
> drivers/input/misc/soc_button_array.c | 19 ++++++++++++++-----
> 1 file changed, 14 insertions(+), 5 deletions(-)
>
> diff --git a/drivers/input/misc/soc_button_array.c b/drivers/input/misc/soc_button_array.c
> index 5a6334b..ac82971 100644
> --- a/drivers/input/misc/soc_button_array.c
> +++ b/drivers/input/misc/soc_button_array.c
> @@ -83,6 +83,13 @@ soc_button_device_create(struct pnp_dev *pdev,
> sizeof(*gpio_keys_pdata) +
> sizeof(*gpio_keys) * MAX_NBUTTONS,
> GFP_KERNEL);
> + if (!gpio_keys_pdata) {
> + dev_err(&pdev->dev,
> + "Can't allocate memory for gpio_keys_platform_data\n");
OOM message is not needed as memory subsystem will take care of it.
> + error = -ENOMEM;
> + goto err_mem;
Return directly from here.
> + }
> +
> gpio_keys = (void *)(gpio_keys_pdata + 1);
>
> for (info = button_info; info->name; info++) {
> @@ -104,7 +111,7 @@ soc_button_device_create(struct pnp_dev *pdev,
>
> if (n_buttons == 0) {
> error = -ENODEV;
> - goto err_free_mem;
> + goto err_mem;
ditto
> }
>
> gpio_keys_pdata->buttons = gpio_keys;
> @@ -114,7 +121,7 @@ soc_button_device_create(struct pnp_dev *pdev,
> pd = platform_device_alloc("gpio-keys", PLATFORM_DEVID_AUTO);
> if (!pd) {
> error = -ENOMEM;
> - goto err_free_mem;
> + goto err_mem;
ditto
> }
>
> error = platform_device_add_data(pd, gpio_keys_pdata,
> @@ -130,8 +137,7 @@ soc_button_device_create(struct pnp_dev *pdev,
>
> err_free_pdev:
> platform_device_put(pd);
> -err_free_mem:
> - devm_kfree(&pdev->dev, gpio_keys_pdata);
> +err_mem:
This label would not be required once returned directly from above.
> return ERR_PTR(error);
> }
>
> @@ -155,8 +161,11 @@ static int soc_button_pnp_probe(struct pnp_dev *pdev,
> int error;
>
> priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL);
> - if (!priv)
> + if (!priv) {
> + dev_err(&pdev->dev,
> + "Can't allocate memory for soc_button_data\n");
OOM message is not needed as memory subsystem will take care of it.
--
Regards,
Sachin.
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