[PATCH v13 01/25] firmware: arm_scmi: Add new SCMIv4.0 error codes definitions
From: Cristian Marussi
Date: Sun Oct 04 2026 - 04:03:09 EST
SCMIv4.0 introduces a couple of new possible protocol error codes: add the
needed definitions and mappings to Linux error values.
Note that SCMI_PARTIAL_ERROR has to be handled specially, so it needs to be
distinguishable.
Reviewed-by: David Hildenbrand (Arm) <david@xxxxxxxxxx>
Signed-off-by: Cristian Marussi <cristian.marussi@xxxxxxx>
---
v12 --> v13
- use EBADMSG to map SCMI_PARTIAL_ERROR
v4 --> v5
- map SCMI_ERR_IN_USE to EBUSY as natural
---
drivers/firmware/arm_scmi/common.h | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/firmware/arm_scmi/common.h b/drivers/firmware/arm_scmi/common.h
index fe8c22cfb9f7..678258bc7a93 100644
--- a/drivers/firmware/arm_scmi/common.h
+++ b/drivers/firmware/arm_scmi/common.h
@@ -48,6 +48,8 @@ enum scmi_error_codes {
SCMI_ERR_GENERIC = -8, /* Generic Error */
SCMI_ERR_HARDWARE = -9, /* Hardware Error */
SCMI_ERR_PROTOCOL = -10,/* Protocol Error */
+ SCMI_ERR_IN_USE = -11, /* In Use Error */
+ SCMI_ERR_PARTIAL = -12, /* Partial Error */
};
static const int scmi_linux_errmap[] = {
@@ -63,6 +65,8 @@ static const int scmi_linux_errmap[] = {
-EIO, /* SCMI_ERR_GENERIC */
-EREMOTEIO, /* SCMI_ERR_HARDWARE */
-EPROTO, /* SCMI_ERR_PROTOCOL */
+ -EBUSY, /* SCMI_ERR_IN_USE */
+ -EBADMSG, /* SCMI_ERR_PARTIAL */
};
static inline int scmi_to_linux_errno(int errno)
--
2.54.0