Instead of declaring the channel availabilty unconditionally, let us
check for the presence of "shmem" property and return the channel
availablity accordingly.

Signed-off-by: Sudeep Holla <redacted>
---
 drivers/firmware/arm_scmi/smc.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/firmware/arm_scmi/smc.c b/drivers/firmware/arm_scmi/smc.c
index dd4b54c29679..5929c668dc1d 100644
--- a/drivers/firmware/arm_scmi/smc.c
+++ b/drivers/firmware/arm_scmi/smc.c

@@ -33,6 +33,11 @@ struct scmi_smc {
 
 static bool smc_chan_available(struct device *dev, int idx)
 {
+	struct device_node *np = of_parse_phandle(dev->of_node, "shmem", 0);
+	if (!np)
+		return false;
+
+	of_node_put(np);
 	return true;
 }
 

-- 
2.17.1