From: Dan Carpenter <dan.carpenter@linaro.org>
Date: Mon, 23 Mar 2026 19:01:37 +0000 (+0300)
Subject: firmware: arm_scmi: Allow PINCTRL_REQUEST to return EOPNOTSUPP
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=bf1fbd189d45216dec1f02f6e12fffde9f3b4ea6;p=thirdparty%2Fkernel%2Flinux.git

firmware: arm_scmi: Allow PINCTRL_REQUEST to return EOPNOTSUPP

The SCMI protocol specification says that the PINCTRL_REQUEST and
PINCTRL_RELEASE commands are optional.  So if the SCMI server returns
-EOPNOTSUPP, then treat that as success and continue.

Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Linus Walleij <linusw@kernel.org>
Reviewed-by: Sudeep Holla <sudeep.holla@kernel.org>
Signed-off-by: Linus Walleij <linusw@kernel.org>
---

diff --git a/drivers/firmware/arm_scmi/pinctrl.c b/drivers/firmware/arm_scmi/pinctrl.c
index a020e23d7c49a..42cb1aef1fe1e 100644
--- a/drivers/firmware/arm_scmi/pinctrl.c
+++ b/drivers/firmware/arm_scmi/pinctrl.c
@@ -578,6 +578,8 @@ static int scmi_pinctrl_request_free(const struct scmi_protocol_handle *ph,
 	tx->flags = cpu_to_le32(type);
 
 	ret = ph->xops->do_xfer(ph, t);
+	if (ret == -EOPNOTSUPP)
+		ret = 0;
 	ph->xops->xfer_put(ph, t);
 
 	return ret;