Messages in this thread Patch in this message | | | From | Cristian Marussi <> | Subject | [PATCH v6 14/17] firmware: arm_scmi: Reject SCMI drivers while in Raw mode | Date | Thu, 29 Dec 2022 18:22:50 +0000 |
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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: Cristian Marussi <cristian.marussi@arm.com> --- drivers/firmware/arm_scmi/bus.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/firmware/arm_scmi/bus.c b/drivers/firmware/arm_scmi/bus.c index 6228f1581fe3..8601d75f5b9b 100644 --- a/drivers/firmware/arm_scmi/bus.c +++ b/drivers/firmware/arm_scmi/bus.c @@ -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. -- 2.34.1
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