Commit ba80acb0 authored by Cristian Marussi's avatar Cristian Marussi Committed by Sudeep Holla
Browse files

firmware: arm_scmi: Reject SCMI drivers when configured in raw mode 



Reject SCMI driver registration when SCMI raw mode support is configured,
so as to avoid interferences between the SCMI raw mode transactions and the
normal SCMI stack operations.

Signed-off-by: default avatarCristian Marussi <cristian.marussi@arm.com>
Tested-by: default avatarFlorian Fainelli <f.fainelli@gmail.com>
Tested-by: default avatarVincent Guittot <vincent.guittot@linaro.org>
Link: https://lore.kernel.org/r/20230118121426.492864-15-cristian.marussi@arm.com


Signed-off-by: default avatarSudeep Holla <sudeep.holla@arm.com>
parent 74225707

drivers/firmware/arm_scmi/bus.c

+6 −0
Original line number Diff line number Diff line
@@ -59,6 +59,12 @@ static int scmi_protocol_device_request(const struct scmi_device_id *id_table) 
	pr_debug("Requesting SCMI device (%s) for protocol %x\n",

		 id_table->name, id_table->protocol_id);



	if (IS_ENABLED(CONFIG_ARM_SCMI_RAW_MODE_SUPPORT)) {

		pr_warn("SCMI Raw mode active. Rejecting '%s'/0x%02X\n",

			id_table->name, id_table->protocol_id);

		return -EINVAL;

	}



	/*

	 * Search for the matching protocol rdev list and then search

	 * of any existent equally named device...fails if any duplicate found.