linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
To: linux-kernel@vger.kernel.org
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
	stable@vger.kernel.org, Tony Lindgren <tony@atomide.com>,
	Sasha Levin <sashal@kernel.org>
Subject: [PATCH 5.4 02/23] bus: ti-sysc: Fix warning on unbind if reset is not deasserted
Date: Fri,  9 Apr 2021 11:53:32 +0200	[thread overview]
Message-ID: <20210409095302.974340470@linuxfoundation.org> (raw)
In-Reply-To: <20210409095302.894568462@linuxfoundation.org>

From: Tony Lindgren <tony@atomide.com>

[ 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 <tony@atomide.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 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 3934ce3385ac..f9ff6d433dfe 100644
--- a/drivers/bus/ti-sysc.c
+++ b/drivers/bus/ti-sysc.c
@@ -2685,7 +2685,9 @@ static int sysc_remove(struct platform_device *pdev)
 
 	pm_runtime_put_sync(&pdev->dev);
 	pm_runtime_disable(&pdev->dev);
-	reset_control_assert(ddata->rsts);
+
+	if (!reset_control_status(ddata->rsts))
+		reset_control_assert(ddata->rsts);
 
 unprepare:
 	sysc_unprepare(ddata);
-- 
2.30.2




  parent reply	other threads:[~2021-04-09 10:00 UTC|newest]

Thread overview: 30+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-09  9:53 [PATCH 5.4 00/23] 5.4.111-rc1 review Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 01/23] ARM: dts: am33xx: add aliases for mmc interfaces Greg Kroah-Hartman
2021-04-09  9:53 ` Greg Kroah-Hartman [this message]
2021-04-09  9:53 ` [PATCH 5.4 03/23] platform/x86: intel-hid: Support Lenovo ThinkPad X1 Tablet Gen 2 Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 04/23] bpf, x86: Use kvmalloc_array instead kmalloc_array in bpf_jit_comp Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 05/23] net/mlx5e: Enforce minimum value check for ICOSQ size Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 06/23] net: pxa168_eth: Fix a potential data race in pxa168_eth_remove Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 07/23] mISDN: fix crash in fritzpci Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 08/23] mac80211: choose first enabled channel for monitor Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 09/23] drm/msm/adreno: a5xx_power: Dont apply A540 lm_setup to other GPUs Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 10/23] drm/msm: Ratelimit invalid-fence message Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 11/23] netfilter: conntrack: Fix gre tunneling over ipv6 Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 12/23] platform/x86: thinkpad_acpi: Allow the FnLock LED to change state Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 13/23] x86/build: Turn off -fcf-protection for realmode targets Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 14/23] scsi: target: pscsi: Clean up after failure in pscsi_map_sg() Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 15/23] ia64: mca: allocate early mca with GFP_ATOMIC Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 16/23] ia64: fix format strings for err_inject Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 17/23] cifs: revalidate mapping when we open files for SMB1 POSIX Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 18/23] cifs: Silently ignore unknown oplock break handle Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 19/23] bpf, x86: Validate computation of branch displacements for x86-64 Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 20/23] bpf, x86: Validate computation of branch displacements for x86-32 Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 21/23] nvme-mpath: replace direct_make_request with generic_make_request Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 22/23] init/Kconfig: make COMPILE_TEST depend on !S390 Greg Kroah-Hartman
2021-04-09  9:53 ` [PATCH 5.4 23/23] init/Kconfig: make COMPILE_TEST depend on HAS_IOMEM Greg Kroah-Hartman
2021-04-09 19:22 ` [PATCH 5.4 00/23] 5.4.111-rc1 review Florian Fainelli
2021-04-09 20:14 ` Guenter Roeck
2021-04-09 20:39 ` Shuah Khan
2021-04-09 21:20 ` Sudip Mukherjee
2021-04-10  0:55 ` Samuel Zou
2021-04-10  7:27 ` Naresh Kamboju

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20210409095302.974340470@linuxfoundation.org \
    --to=gregkh@linuxfoundation.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=sashal@kernel.org \
    --cc=stable@vger.kernel.org \
    --cc=tony@atomide.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).