On Sat, 2 Nov 2024 09:25:25 +0000
Zicheng Qu <quzicheng@xxxxxxxxxx> wrote:
> In the fwnode_iio_channel_get_by_name(), iterating over parent nodes to
> acquire IIO channels via fwnode_for_each_parent_node(). The variable
> chan was mistakenly attempted on the original node instead of the
> current parent node. This patch corrects the logic to ensure that
> __fwnode_iio_channel_get_by_name() is called with the correct parent
> node.
>
> Cc: stable@xxxxxxxxxxxxxxx # v6.6+
> Fixes: 1e64b9c5f9a0 ("iio: inkern: move to fwnode properties")
> Signed-off-by: Zicheng Qu <quzicheng@xxxxxxxxxx>
Hi Zicheng,
Good catch. I briefly wondered if this was unused code. It is
used, just not that much and it seems not on boards anyone is
testing.
arch/arm/boot/dts/st/ste-ux500-samsung-janice.dts
Anyhow, fix looks good to me. Applied to the fixes-togreg branch of iio.git
and marked for stable.
Thanks,
Jonathan
> ---
> drivers/iio/inkern.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/iio/inkern.c b/drivers/iio/inkern.c
> index 151099be2863..3305ebbdbc07 100644
> --- a/drivers/iio/inkern.c
> +++ b/drivers/iio/inkern.c
> @@ -269,7 +269,7 @@ struct iio_channel *fwnode_iio_channel_get_by_name(struct fwnode_handle *fwnode,
> return ERR_PTR(-ENODEV);
> }
>
> - chan = __fwnode_iio_channel_get_by_name(fwnode, name);
> + chan = __fwnode_iio_channel_get_by_name(parent, name);
> if (!IS_ERR(chan) || PTR_ERR(chan) != -ENODEV) {
> fwnode_handle_put(parent);
> return chan;
