This is a note to let you know that I've just added the patch titled
i3c: master: svc: fix SDA keep low when polling IBIWON timeout happen
to the 6.6-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
i3c-master-svc-fix-sda-keep-low-when-polling-ibiwon-timeout-happen.patch
and it can be found in the queue-6.6 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From dfd7cd6aafdb1f5ba93828e97e56b38304b23a05 Mon Sep 17 00:00:00 2001
From: Frank Li <Frank.Li@xxxxxxx>
Date: Mon, 23 Oct 2023 12:16:57 -0400
Subject: i3c: master: svc: fix SDA keep low when polling IBIWON timeout happen
From: Frank Li <Frank.Li@xxxxxxx>
commit dfd7cd6aafdb1f5ba93828e97e56b38304b23a05 upstream.
Upon IBIWON timeout, the SDA line will always be kept low if we don't emit
a stop. Calling svc_i3c_master_emit_stop() there will let the bus return to
idle state.
Fixes: dd3c52846d59 ("i3c: master: svc: Add Silvaco I3C master driver")
Cc: <stable@xxxxxxxxxxxxxxx>
Reviewed-by: Miquel Raynal <miquel.raynal@xxxxxxxxxxx>
Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
Link: https://lore.kernel.org/r/20231023161658.3890811-6-Frank.Li@xxxxxxx
Signed-off-by: Alexandre Belloni <alexandre.belloni@xxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/i3c/master/svc-i3c-master.c | 1 +
1 file changed, 1 insertion(+)
--- a/drivers/i3c/master/svc-i3c-master.c
+++ b/drivers/i3c/master/svc-i3c-master.c
@@ -405,6 +405,7 @@ static void svc_i3c_master_ibi_work(stru
SVC_I3C_MSTATUS_IBIWON(val), 0, 1000);
if (ret) {
dev_err(master->dev, "Timeout when polling for IBIWON\n");
+ svc_i3c_master_emit_stop(master);
goto reenable_ibis;
}
Patches currently in stable-queue which might be from Frank.Li@xxxxxxx are
queue-6.6/i3c-master-svc-fix-wrong-data-return-when-ibi-happen-during-start-frame.patch
queue-6.6/i3c-master-svc-fix-sda-keep-low-when-polling-ibiwon-timeout-happen.patch
queue-6.6/i3c-master-svc-fix-ibi-may-not-return-mandatory-data-byte.patch
queue-6.6/i3c-master-svc-fix-check-wrong-status-register-in-irq-handler.patch
queue-6.6/i3c-master-svc-fix-random-hot-join-failure-since-timeout-error.patch
queue-6.6/i3c-master-svc-fix-race-condition-in-ibi-work-thread.patch
