Commit 555e9174 authored by Philip Radford's avatar Philip Radford Committed by Sudeep Holla
Browse files

firmware: arm_scmi: Add support for debug counter decrement 



Introduce a new `scmi_dec_count` helper to complement the existing
`scmi_inc_count`, allowing controlled decrement of SCMI debug counters.

This provides symmetry in debug counter management and enables
accurate tracking of counters that may both increase and decrease,
such as those used for in-flight message tracking.

Only active when CONFIG_ARM_SCMI_DEBUG_COUNTERS is enabled.

Reviewed-by: default avatarCristian Marussi <cristian.marussi@arm.com>
Signed-off-by: default avatarPhilip Radford <philip.radford@arm.com>
Message-Id: <20250630105544.531723-2-philip.radford@arm.com>
Signed-off-by: default avatarSudeep Holla <sudeep.holla@arm.com>
parent ad28fc31

drivers/firmware/arm_scmi/common.h

+6 −0
Original line number Diff line number Diff line
@@ -314,6 +314,12 @@ static inline void scmi_inc_count(atomic_t *arr, int stat) 
		atomic_inc(&arr[stat]);

}



static inline void scmi_dec_count(atomic_t *arr, int stat)

{

	if (IS_ENABLED(CONFIG_ARM_SCMI_DEBUG_COUNTERS))

		atomic_dec(&arr[stat]);

}



enum scmi_bad_msg {

	MSG_UNEXPECTED = -1,

	MSG_INVALID = -2,