linux-kernel - [PATCH v2 2/3] i3c: master: svc: change ENXIO to EAGAIN when IBI occurs during start frame

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Date: Mon,  6 May 2024 12:40:08 -0400
From: Frank Li <Frank.Li@....com>
To: miquel.raynal@...tlin.com
Cc: Frank.Li@....com,
	alexandre.belloni@...tlin.com,
	conor.culhane@...vaco.com,
	imx@...ts.linux.dev,
	linux-i3c@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 2/3] i3c: master: svc: change ENXIO to EAGAIN when IBI occurs during start frame

svc_i3c_master_xfer() returns error ENXIO if an In-Band Interrupt (IBI)
occurs when the host starts the frame.

Change error code to EAGAIN to inform the client driver that this
situation has occurred and to try again sometime later.

Fixes: 5e5e3c92e748 ("i3c: master: svc: fix wrong data return when IBI happen during start frame")
Signed-off-by: Frank Li <Frank.Li@....com>
---

Notes:
    change from v1 to v2
    - none

 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 fd8de54b13667..94e4954509558 100644
--- a/drivers/i3c/master/svc-i3c-master.c
+++ b/drivers/i3c/master/svc-i3c-master.c
@@ -1080,7 +1080,7 @@ static int svc_i3c_master_xfer(struct svc_i3c_master *master,
 	 * and yield the above events handler.
 	 */
 	if (SVC_I3C_MSTATUS_IBIWON(reg)) {
-		ret = -ENXIO;
+		ret = -EAGAIN;
 		*actual_len = 0;
 		goto emit_stop;
 	}
-- 
2.34.1