linux-kernel - [PATCH v1 3/3] i3c: master: svc: Fix missing STOP for master request

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Message-Id: <20250317051951.3065011-4-yschu@nuvoton.com>
Date: Mon, 17 Mar 2025 13:19:51 +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 3/3] i3c: master: svc: Fix missing STOP for master request

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

The controller driver nacked the master request but didn't emit a
STOP to end the transaction. The driver shall refuse the unsupported
requests and return the controller state to IDLE by emitting a STOP.

Fixes: dd3c52846d59 ("i3c: master: svc: Add Silvaco I3C master driver")
Signed-off-by: Stanley Chu <yschu@...oton.com>
---
 drivers/i3c/master/svc-i3c-master.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c
index 57b9dec6b5a8..e0cd3ce28b7f 100644
--- a/drivers/i3c/master/svc-i3c-master.c
+++ b/drivers/i3c/master/svc-i3c-master.c
@@ -592,6 +592,7 @@ static void svc_i3c_master_ibi_work(struct work_struct *work)
 			queue_work(master->base.wq, &master->hj_work);
 		break;
 	case SVC_I3C_MSTATUS_IBITYPE_MASTER_REQUEST:
+		svc_i3c_master_emit_stop(master);
 	default:
 		break;
 	}
-- 
2.34.1