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From: Sasha Levin <>
Cc: Tony Lindgren <>, Sasha Levin <>,
Subject: [PATCH AUTOSEL 5.10 02/33] bus: ti-sysc: Fix warning on unbind if reset is not deasserted
Date: Mon, 29 Mar 2021 18:21:50 -0400
Message-ID: <> (raw)
In-Reply-To: <>

From: Tony Lindgren <>

[ Upstream commit a7b5d7c4969aba8d1f04c29048906abaa71fb6a9 ]

We currently get thefollowing on driver unbind if a reset is configured
and asserted:

WARNING: CPU: 0 PID: 993 at drivers/reset/core.c:432 reset_control_assert
(reset_control_assert) from [<c0fecda8>] (sysc_remove+0x190/0x1e4)
(sysc_remove) from [<c0a2bb58>] (platform_remove+0x24/0x3c)
(platform_remove) from [<c0a292fc>] (__device_release_driver+0x154/0x214)
(__device_release_driver) from [<c0a2a210>] (device_driver_detach+0x3c/0x8c)
(device_driver_detach) from [<c0a27d64>] (unbind_store+0x60/0xd4)
(unbind_store) from [<c0546bec>] (kernfs_fop_write_iter+0x10c/0x1cc)

Let's fix it by checking the reset status.

Signed-off-by: Tony Lindgren <>
Signed-off-by: Sasha Levin <>
 drivers/bus/ti-sysc.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/bus/ti-sysc.c b/drivers/bus/ti-sysc.c
index 45f5530666d3..16e389dce111 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -3044,7 +3044,9 @@ static int sysc_remove(struct platform_device *pdev)
-	reset_control_assert(ddata->rsts);
+	if (!reset_control_status(ddata->rsts))
+		reset_control_assert(ddata->rsts);

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Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-29 22:21 [PATCH AUTOSEL 5.10 01/33] ARM: dts: am33xx: add aliases for mmc interfaces Sasha Levin
2021-03-29 22:21 ` Sasha Levin [this message]

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