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: Thu, 5 Aug 2021 23:50:09 +0800 [thread overview]
Message-ID: <CAAd53p5TVJk3G4cArS_UO7cgUpJLONNGVHnpezXy0XTYoXd_uw@mail.gmail.com> (raw)
In-Reply-To: <87bl6cnzy2.fsf@baylibre.com>
Hi Mattijs,
On Thu, Aug 5, 2021 at 2:55 PM Mattijs Korpershoek
<mkorpershoek@baylibre.com> wrote:
>
> Hi Kai-Heng,
>
> Thanks for your patch,
>
> Kai-Heng Feng <kai.heng.feng@canonical.com> writes:
>
[snipped]
> I confirm this diff works for me:
>
> root@i500-pumpkin:~# hciconfig hci0 up
> root@i500-pumpkin:~# hciconfig hci0 down
> root@i500-pumpkin:~# hciconfig hci0 up
> root@i500-pumpkin:~# hciconfig hci0
> hci0: Type: Primary Bus: SDIO
> BD Address: 00:0C:E7:55:FF:12 ACL MTU: 1021:8 SCO MTU: 244:4
> UP RUNNING
> RX bytes:11268 acl:0 sco:0 events:829 errors:0
> TX bytes:182569 acl:0 sco:0 commands:829 errors:0
>
> root@i500-pumpkin:~# hcitool scan
> Scanning ...
> <redacted> Pixel 3 XL
>
> Tested-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
I found that btmtksdio_flush() only cancels the work instead of doing
flush_work(). That probably explains why putting ->shutdown right
before ->flush doesn't work.
So can you please test the following again:
diff --git a/drivers/bluetooth/btmtksdio.c b/drivers/bluetooth/btmtksdio.c
index 9872ef18f9fea..b33c05ad2150b 100644
--- a/drivers/bluetooth/btmtksdio.c
+++ b/drivers/bluetooth/btmtksdio.c
@@ -649,9 +649,9 @@ static int btmtksdio_flush(struct hci_dev *hdev)
{
struct btmtksdio_dev *bdev = hci_get_drvdata(hdev);
- skb_queue_purge(&bdev->txq);
+ flush_work(&bdev->tx_work);
- cancel_work_sync(&bdev->tx_work);
+ skb_queue_purge(&bdev->txq);
return 0;
}
diff --git a/net/bluetooth/hci_core.c b/net/bluetooth/hci_core.c
index 2560ed2f144d4..a61e610a400cb 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
next prev parent reply other threads:[~2021-08-05 15:50 UTC|newest]
Thread overview: 20+ 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 8:12 ` [v2] " bluez.test.bot
2021-05-14 18:15 ` [PATCH v2] " 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
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 [this message]
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
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