On 7/28/25 4:51 AM, Ziming Du wrote:
> Fix Smatch-detected issue:
> drivers/dma/idxd/init.c:246 idxd_setup_wqs() error:
> uninitialized symbol'conf_dev'
>
> 'conf_dev' may be used uninitialized in error handling paths.
> Specifically, if the memory allocation for 'wq' fails, the code
> jumps to 'err', and attempt to call put_device(conf_dev), without
> ensuring that conf_dev has been properly initialized.
>
> Fix it by initializing conf_dev to NULL at declaration.
>
> Signed-off-by: Ziming Du <duziming2@huawei.com>
Reviewed-by: Dave Jiang <dave.jiang@intel.com>
> ---
> drivers/dma/idxd/init.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/dma/idxd/init.c b/drivers/dma/idxd/init.c
> index 35bdefd3728b..2b61f26af1f6 100644
> --- a/drivers/dma/idxd/init.c
> +++ b/drivers/dma/idxd/init.c
> @@ -178,7 +178,7 @@ static int idxd_setup_wqs(struct idxd_device *idxd)
> {
> struct device *dev = &idxd->pdev->dev;
> struct idxd_wq *wq;
> - struct device *conf_dev;
> + struct device *conf_dev = NULL;
> int i, rc;
>
> idxd->wqs = kcalloc_node(idxd->max_wqs, sizeof(struct idxd_wq *),