| Message ID | 20221229182253.948175-15-cristian.marussi@arm.com |
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From: Cristian Marussi <cristian.marussi@arm.com>
To: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Cc: sudeep.holla@arm.com, james.quinlan@broadcom.com,
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cristian.marussi@arm.com
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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|
| Series |
Introduce a unified API for SCMI Server testing
|
|
Commit Message
Cristian Marussi
Dec. 29, 2022, 6:22 p.m. UTC
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.