Messages in this thread Patch in this message |  | | From | Cristian Marussi <> | Subject | [RFC PATCH 16/16] [DEBUG]: firmware: arm_scmi: Add Kconfig to allow SCMI Testing driver coexistence | Date | Sun, 27 Feb 2022 20:56:08 +0000 |
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firmware: arm_scmi: Add Kconfig to allow SCMI Testing driver coexistence
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com> --- drivers/firmware/arm_scmi/Kconfig | 6 ++++++ drivers/firmware/arm_scmi/driver.c | 15 ++++++++------- 2 files changed, 14 insertions(+), 7 deletions(-)
diff --git a/drivers/firmware/arm_scmi/Kconfig b/drivers/firmware/arm_scmi/Kconfig index a3726074c89e..c3fc608d5373 100644 --- a/drivers/firmware/arm_scmi/Kconfig +++ b/drivers/firmware/arm_scmi/Kconfig @@ -160,4 +160,10 @@ config ARM_SCMI_TEST_DRIVER This driver can also be built as a module. If so, the module will be called scmi_test_driver. +config ARM_SCMI_TEST_DRIVER_COEXISTENCE + bool "Allow Coexistence of SCMI standard drivers and test driver" + depends on ARM_SCMI_TEST_DRIVER + help + This enables coexistence for concurrent SCMI drievrs and testing driver. + endmenu diff --git a/drivers/firmware/arm_scmi/driver.c b/drivers/firmware/arm_scmi/driver.c index 8c4706b24368..ff692c458a0b 100644 --- a/drivers/firmware/arm_scmi/driver.c +++ b/drivers/firmware/arm_scmi/driver.c @@ -1782,14 +1782,15 @@ 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_TEST_DRIVER) - /* Reject non-testing SCMI drivers */ - if (strncmp(id_table->name, "__scmi_test", strlen("__scmi_test"))) { - pr_warn("SCMI Test driver loaded. Rejecting '%s'/0x%X\n", - id_table->name, id_table->protocol_id); - return -EINVAL; + if (IS_ENABLED(CONFIG_ARM_SCMI_TEST_DRIVER) && + !IS_ENABLED(CONFIG_ARM_SCMI_TEST_DRIVER_COEXISTENCE)) { + /* Reject non-testing SCMI drivers */ + if (strncmp(id_table->name, "__scmi_test", strlen("__scmi_test"))) { + pr_warn("SCMI Test driver loaded. Rejecting driver: '%s'/0x%X\n", + id_table->name, id_table->protocol_id); + return -EBUSY; + } } -#endif /* * Search for the matching protocol rdev list and then search -- 2.17.1
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