linux-kernel - [PATCH 1/2] rpmsg: qcom_smd: Fix fallback to qcom,ipc parse

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Message-Id: <20250421-fix-qcom-smd-v1-1-574d071d3f27@mainlining.org>
Date: Mon, 21 Apr 2025 04:04:16 +0200
From: Barnabás Czémán <barnabas.czeman@...nlining.org>
To: Bjorn Andersson <andersson@...nel.org>, 
 Mathieu Poirier <mathieu.poirier@...aro.org>, 
 Tudor Ambarus <tudor.ambarus@...aro.org>, 
 Jassi Brar <jassisinghbrar@...il.com>, 
 Konrad Dybcio <konradybcio@...nel.org>
Cc: linux-arm-msm@...r.kernel.org, linux-remoteproc@...r.kernel.org, 
 linux-kernel@...r.kernel.org, Luca Weiss <luca@...aweiss.eu>, 
 Barnabás Czémán <barnabas.czeman@...nlining.org>
Subject: [PATCH 1/2] rpmsg: qcom_smd: Fix fallback to qcom,ipc parse

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.

Fixes: 24fdd5074b20 ("mailbox: use error ret code of of_parse_phandle_with_args()")
Signed-off-by: Barnabás Czémán <barnabas.czeman@...nlining.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