* [PATCH AUTOSEL 6.6 052/294] i3c: master: svc: Fix missing STOP for master request
[not found] <20250505225634.2688578-1-sashal@kernel.org>
@ 2025-05-05 22:52 ` Sasha Levin
2025-05-05 22:54 ` [PATCH AUTOSEL 6.6 184/294] i3c: master: svc: Flush FIFO before sending Dynamic Address Assignment(DAA) Sasha Levin
1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2025-05-05 22:52 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Stanley Chu, Frank Li, Alexandre Belloni, Sasha Levin,
miquel.raynal, linux-i3c, imx
From: Stanley Chu <yschu@nuvoton.com>
[ Upstream commit 0430bf9bc1ac068c8b8c540eb93e5751872efc51 ]
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.
Signed-off-by: Stanley Chu <yschu@nuvoton.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20250318053606.3087121-4-yschu@nuvoton.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
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 fa1f12a89158c..3cef3794f10d3 100644
--- a/drivers/i3c/master/svc-i3c-master.c
+++ b/drivers/i3c/master/svc-i3c-master.c
@@ -503,6 +503,7 @@ 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;
}
--
2.39.5
--
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^ permalink raw reply related [flat|nested] 2+ messages in thread* [PATCH AUTOSEL 6.6 184/294] i3c: master: svc: Flush FIFO before sending Dynamic Address Assignment(DAA)
[not found] <20250505225634.2688578-1-sashal@kernel.org>
2025-05-05 22:52 ` [PATCH AUTOSEL 6.6 052/294] i3c: master: svc: Fix missing STOP for master request Sasha Levin
@ 2025-05-05 22:54 ` Sasha Levin
1 sibling, 0 replies; 2+ messages in thread
From: Sasha Levin @ 2025-05-05 22:54 UTC (permalink / raw)
To: linux-kernel, stable
Cc: Frank Li, Miquel Raynal, Alexandre Belloni, Sasha Levin,
linux-i3c, imx
From: Frank Li <Frank.Li@nxp.com>
[ Upstream commit a892ee4cf22a50e1d6988d0464a9a421f3e5db2f ]
Ensure the FIFO is empty before issuing the DAA command to prevent
incorrect command data from being sent. Align with other data transfers,
such as svc_i3c_master_start_xfer_locked(), which flushes the FIFO before
sending a command.
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Link: https://lore.kernel.org/r/20250129162250.3629189-1-Frank.Li@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/i3c/master/svc-i3c-master.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/i3c/master/svc-i3c-master.c b/drivers/i3c/master/svc-i3c-master.c
index 3cef3794f10d3..3d1734849e0d9 100644
--- a/drivers/i3c/master/svc-i3c-master.c
+++ b/drivers/i3c/master/svc-i3c-master.c
@@ -841,6 +841,8 @@ static int svc_i3c_master_do_daa_locked(struct svc_i3c_master *master,
u32 reg;
int ret, i;
+ svc_i3c_master_flush_fifo(master);
+
while (true) {
/* Enter/proceed with DAA */
writel(SVC_I3C_MCTRL_REQUEST_PROC_DAA |
--
2.39.5
--
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^ permalink raw reply related [flat|nested] 2+ messages in thread