From: Kai-Heng Feng <kai.heng.feng@canonical.com>
To: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Cc: Marcel Holtmann <marcel@holtmann.org>,
Johan Hedberg <johan.hedberg@gmail.com>,
Luiz Augusto von Dentz <luiz.dentz@gmail.com>,
"David S. Miller" <davem@davemloft.net>,
Jakub Kicinski <kuba@kernel.org>,
Fabien Parent <fparent@baylibre.com>,
Sean Wang <sean.wang@mediatek.com>,
"open list:BLUETOOTH SUBSYSTEM" <linux-bluetooth@vger.kernel.org>,
"open list:NETWORKING [GENERAL]" <netdev@vger.kernel.org>,
open list <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH v2] Bluetooth: Shutdown controller after workqueues are flushed or cancelled
Date: Tue, 3 Aug 2021 14:42:07 +0800 [thread overview]
Message-ID: <CAAd53p4Ss1Z-7CB4g=_xZYxo1xDz6ih6GHUuMcgncy+yNAfU4w@mail.gmail.com> (raw)
In-Reply-To: <87y29o58su.fsf@baylibre.com>
Hi Mattijs,
On Fri, Jul 30, 2021 at 7:40 PM Mattijs Korpershoek
<mkorpershoek@baylibre.com> wrote:
>
> Hi Kai-Heng,
[snipped]
> Thank you for your help. Sorry I did not post the logs previously.
>
> dmesg: https://pastebin.com/tpWDNyQr
> ftrace on btmtksdio: https://pastebin.com/jmhvmwUw
Seems like btmtksdio needs shudown() to be called before flush().
Since the order was there for a very long time, changing the calling
order indeed can break what driver expects.
Can you please test the following patch:
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 2560ed2f144d..a61e610a400c 100644
--- a/net/bluetooth/hci_core.c
+++ b/net/bluetooth/hci_core.c
@@ -1785,6 +1785,14 @@ int hci_dev_do_close(struct hci_dev *hdev)
aosp_do_close(hdev);
msft_do_close(hdev);
+ if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) &&
+ !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
+ test_bit(HCI_UP, &hdev->flags)) {
+ /* Execute vendor specific shutdown routine */
+ if (hdev->shutdown)
+ hdev->shutdown(hdev);
+ }
+
if (hdev->flush)
hdev->flush(hdev);
@@ -1798,14 +1806,6 @@ int hci_dev_do_close(struct hci_dev *hdev)
clear_bit(HCI_INIT, &hdev->flags);
}
- if (!hci_dev_test_flag(hdev, HCI_UNREGISTER) &&
- !hci_dev_test_flag(hdev, HCI_USER_CHANNEL) &&
- test_bit(HCI_UP, &hdev->flags)) {
- /* Execute vendor specific shutdown routine */
- if (hdev->shutdown)
- hdev->shutdown(hdev);
- }
-
/* flush cmd work */
flush_work(&hdev->cmd_work);
Kai-Heng
>
> Mattijs
> >
> > Kai-Heng
> >
> >>
> >> Thanks,
> >> Mattijs Korpershoek
> >>
> >>
> >> >
> >> > Regards
> >> >
> >> > Marcel
next prev parent reply other threads:[~2021-08-03 6:42 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-14 7:14 [PATCH v2] Bluetooth: Shutdown controller after workqueues are flushed or cancelled Kai-Heng Feng
2021-05-14 18:15 ` Marcel Holtmann
2021-07-28 13:50 ` Mattijs Korpershoek
2021-07-28 15:25 ` Kai-Heng Feng
2021-07-30 11:40 ` Mattijs Korpershoek
2021-08-03 6:42 ` Kai-Heng Feng [this message]
2021-08-03 8:21 ` Mattijs Korpershoek
2021-08-04 14:42 ` Kai-Heng Feng
2021-08-05 6:55 ` Mattijs Korpershoek
2021-08-05 15:50 ` Kai-Heng Feng
2021-08-06 8:51 ` Mattijs Korpershoek
2021-08-06 15:36 ` Kai-Heng Feng
2021-08-09 9:19 ` Mattijs Korpershoek
[not found] ` <20210802030538.2023-1-hdanton@sina.com>
2021-08-03 6:45 ` Kai-Heng Feng
[not found] ` <20210803074722.2383-1-hdanton@sina.com>
2021-08-04 14:35 ` Kai-Heng Feng
[not found] ` <20210805030024.2603-1-hdanton@sina.com>
2021-08-05 3:44 ` Kai-Heng Feng
[not found] ` <20210805063536.2698-1-hdanton@sina.com>
2021-08-05 7:19 ` Kai-Heng Feng
2021-08-05 6:12 ` Hsin-Yi Wang
[not found] ` <20210805070114.2803-1-hdanton@sina.com>
2021-08-05 7:04 ` Hsin-Yi Wang
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='CAAd53p4Ss1Z-7CB4g=_xZYxo1xDz6ih6GHUuMcgncy+yNAfU4w@mail.gmail.com' \
--to=kai.heng.feng@canonical.com \
--cc=davem@davemloft.net \
--cc=fparent@baylibre.com \
--cc=johan.hedberg@gmail.com \
--cc=kuba@kernel.org \
--cc=linux-bluetooth@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=luiz.dentz@gmail.com \
--cc=marcel@holtmann.org \
--cc=mkorpershoek@baylibre.com \
--cc=netdev@vger.kernel.org \
--cc=sean.wang@mediatek.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).