On Mon, Apr 21, 2025 at 04:04:16AM +0200, Barnabás Czémán wrote:
> mbox_request_channel() returning value was changed in case of error.
> It uses returning value of of_parse_phandle_with_args().
> It is returning with -ENOENT instead of -ENODEV when no mboxes property
> exists.
Why? What is the rationale?
>
> Fixes: 24fdd5074b20 ("mailbox: use error ret code of
> of_parse_phandle_with_args()")
> Signed-off-by: Barnabás Czémán <barnabas.cze...@mainlining.org>
> ---
> drivers/rpmsg/qcom_smd.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/rpmsg/qcom_smd.c b/drivers/rpmsg/qcom_smd.c
> index
> 40d386809d6b78e209861c23d934e1b9fd743606..e552a9af578e48cfd854a228a4d91e4fa04bf29d
> 100644
> --- a/drivers/rpmsg/qcom_smd.c
> +++ b/drivers/rpmsg/qcom_smd.c
> @@ -1368,7 +1368,7 @@ static int qcom_smd_parse_edge(struct device *dev,
> edge->mbox_client.knows_txdone = true;
> edge->mbox_chan = mbox_request_channel(&edge->mbox_client, 0);
> if (IS_ERR(edge->mbox_chan)) {
> - if (PTR_ERR(edge->mbox_chan) != -ENODEV) {
> + if (PTR_ERR(edge->mbox_chan) != -ENOENT) {
> ret = PTR_ERR(edge->mbox_chan);
> goto put_node;
> }
>
> --
> 2.49.0
>
--
With best wishes
Dmitry
