On Mon, Mar 06, 2023 at 04:25:26PM +0300, Ivan Bornyakov wrote:
> If bus type is other than imx50_weim_devtype and have no child devices,
> variable 'ret' in function weim_parse_dt() will not be initialized, but
> will be used as branch condition and return value. Fix this by
> initializing 'ret' with 0.
>
> This was discovered with help of clang-analyzer, but the situation is
> quite possible in real life.
>
> Fixes: 52c47b63412b ("bus: imx-weim: improve error handling upon child probe-failure")
> Signed-off-by: Ivan Bornyakov <i.bornyakov@xxxxxxxxxxx>
> Cc: stable@xxxxxxxxxxxxxxx
> Reviewed-by: Fabio Estevam <festevam@xxxxxxxxx>
> ---
> drivers/bus/imx-weim.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> ChangeLog:
> v1:
> [https://lore.kernel.org/all/20230306060505.11657-1-i.bornyakov@xxxxxxxxxxx/]
> v2:
> * add "Fixes" tag
> * add Fabio's "Reviewed-by" tag
>
> diff --git a/drivers/bus/imx-weim.c b/drivers/bus/imx-weim.c
> index 828c66bbaa67..55d917bd1f3f 100644
> --- a/drivers/bus/imx-weim.c
> +++ b/drivers/bus/imx-weim.c
> @@ -204,8 +204,8 @@ static int weim_parse_dt(struct platform_device *pdev)
> const struct of_device_id *of_id = of_match_device(weim_id_table,
> &pdev->dev);
> const struct imx_weim_devtype *devtype = of_id->data;
> + int ret = 0, have_child = 0;
> struct device_node *child;
> - int ret, have_child = 0;
> struct weim_priv *priv;
> void __iomem *base;
> u32 reg;
> --
> 2.39.2
>
Ping.
