lkml.org 
[lkml]   [2022]   [Aug]   [25]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH v2 8/9] firmware: arm_scmi: Reject SCMI drivers while in Raw mode
Date
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/driver.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c
index fd131e499e15..7742581b94c7 100644
--- a/drivers/firmware/arm_scmi/driver.c
+++ b/drivers/firmware/arm_scmi/driver.c
@@ -2331,6 +2331,12 @@ 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.
--
2.32.0
\
 
 \ /
  Last update: 2022-08-25 16:13    [W:0.165 / U:0.520 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site