linux-kernel - [PATCH v1 2/2] i3c: master: svc: Emit STOP asap in the IBI transaction

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Message-Id: <20250415051808.88091-3-yschu@nuvoton.com>
Date: Tue, 15 Apr 2025 13:18:08 +0800
From: Stanley Chu <stanley.chuys@...il.com>
To: frank.li@....com,
	miquel.raynal@...tlin.com,
	alexandre.belloni@...tlin.com,
	linux-i3c@...ts.infradead.org
Cc: linux-kernel@...r.kernel.org,
	tomer.maimon@...oton.com,
	kwliu@...oton.com,
	yschu@...oton.com
Subject: [PATCH v1 2/2] i3c: master: svc: Emit STOP asap in the IBI transaction

From: Stanley Chu <yschu@...oton.com>

Queuing the IBI request does not need to be done earlier than emitting
the STOP. Emitting STOP immediately after receiving the IBI request can
complete the IBI transaction earlier and return the bus to idle.

Signed-off-by: Stanley Chu <yschu@...oton.com>
---
 drivers/i3c/master/svc-i3c-master.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c
index 7ceaf3ec45bb..9b23239ad8db 100644
--- a/drivers/i3c/master/svc-i3c-master.c
+++ b/drivers/i3c/master/svc-i3c-master.c
@@ -577,11 +577,11 @@ static void svc_i3c_master_ibi_isr(struct svc_i3c_master *master)
 	/* Handle the non critical tasks */
 	switch (ibitype) {
 	case SVC_I3C_MSTATUS_IBITYPE_IBI:
+		svc_i3c_master_emit_stop(master);
 		if (dev) {
 			i3c_master_queue_ibi(dev, master->ibi.tbq_slot);
 			master->ibi.tbq_slot = NULL;
 		}
-		svc_i3c_master_emit_stop(master);
 		break;
 	case SVC_I3C_MSTATUS_IBITYPE_HOT_JOIN:
 		svc_i3c_master_emit_stop(master);
-- 
2.34.1