On Tue, 2015-11-17 at 14:33 -0800, Hongzhou Yang wrote:
> configs will kmemdup to dup_configs in pictrl util function.
> So configs need to be freed.
>
> Signed-off-by: Hongzhou Yang <hongzhou.y...@mediatek.com>
> Reviewed-by: Daniel Kurtz <djku...@chromium.org>
> Reviewed-by: Matthias Brugger <matthias....@gmail.com>
> ---
> Fix a memleak issue.
> According to Yingjoe's comment, add return checek for
> pinconf_generic_parse_dt_config.
Reviewed-by: Yingjoe Chen <yingjoe.c...@mediatek.com>
Joe.C
> drivers/pinctrl/mediatek/pinctrl-mtk-common.c | 27
> ++++++++++++++++---------
> 1 file changed, 17 insertions(+), 10 deletions(-)
>
> diff --git a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
> b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
> index 5c71727..8db7cdf 100644
> --- a/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
> +++ b/drivers/pinctrl/mediatek/pinctrl-mtk-common.c
> @@ -509,6 +509,9 @@ static int mtk_pctrl_dt_subnode_to_map(struct pinctrl_dev
> *pctldev,
>
> err = pinconf_generic_parse_dt_config(node, pctldev, &configs,
> &num_configs);
> + if (err)
> + return err;
> +
> if (num_configs)
> has_config = 1;
>
> @@ -520,21 +523,23 @@ static int mtk_pctrl_dt_subnode_to_map(struct
> pinctrl_dev *pctldev,
> if (has_config && num_pins >= 1)
> maps_per_pin++;
>
> - if (!num_pins || !maps_per_pin)
> - return -EINVAL;
> + if (!num_pins || !maps_per_pin) {
> + err = -EINVAL;
> + goto exit;
> + }
>
> reserve = num_pins * maps_per_pin;
>
> err = pinctrl_utils_reserve_map(pctldev, map,
> reserved_maps, num_maps, reserve);
> if (err < 0)
> - goto fail;
> + goto exit;
>
> for (i = 0; i < num_pins; i++) {
> err = of_property_read_u32_index(node, "pinmux",
> i, &pinfunc);
> if (err)
> - goto fail;
> + goto exit;
>
> pin = MTK_GET_PIN_NO(pinfunc);
> func = MTK_GET_PIN_FUNC(pinfunc);
> @@ -543,20 +548,21 @@ static int mtk_pctrl_dt_subnode_to_map(struct
> pinctrl_dev *pctldev,
> func >= ARRAY_SIZE(mtk_gpio_functions)) {
> dev_err(pctl->dev, "invalid pins value.\n");
> err = -EINVAL;
> - goto fail;
> + goto exit;
> }
>
> grp = mtk_pctrl_find_group_by_pin(pctl, pin);
> if (!grp) {
> dev_err(pctl->dev, "unable to match pin %d to group\n",
> pin);
> - return -EINVAL;
> + err = -EINVAL;
> + goto exit;
> }
>
> err = mtk_pctrl_dt_node_to_map_func(pctl, pin, func, grp, map,
> reserved_maps, num_maps);
> if (err < 0)
> - goto fail;
> + goto exit;
>
> if (has_config) {
> err = pinctrl_utils_add_map_configs(pctldev, map,
> @@ -564,13 +570,14 @@ static int mtk_pctrl_dt_subnode_to_map(struct
> pinctrl_dev *pctldev,
> configs, num_configs,
> PIN_MAP_TYPE_CONFIGS_GROUP);
> if (err < 0)
> - goto fail;
> + goto exit;
> }
> }
>
> - return 0;
> + err = 0;
>
> -fail:
> +exit:
> + kfree(configs);
> return err;
> }
>
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