2022-07-25 22:36:44

by Abhishek Pandit-Subedi

[permalink] [raw]
Subject: [PATCH v2] Bluetooth: Always set event mask on suspend

From: Abhishek Pandit-Subedi <[email protected]>

When suspending, always set the event mask once disconnects are
successful. Otherwise, if wakeup is disallowed, the event mask is not
set before suspend continues and can result in an early wakeup.

Fixes: 182ee45da083 ("Bluetooth: hci_sync: Rework hci_suspend_notifier")
Cc: [email protected]
Signed-off-by: Abhishek Pandit-Subedi <[email protected]>
---
Observed on ChromeOS as follows:

< HCI Command: Disconnect (0x01|0x0006) plen 3
Handle: 256
Reason: Remote Device Terminated due to Power Off (0x15)
> HCI Event: Command Status (0x0f) plen 4
Disconnect (0x01|0x0006) ncmd 1
Status: Success (0x00)
@ MGMT Event: Device Disconnected (0x000c) plen 8
BR/EDR Address: 04:52:C7:C3:65:B5 (Bose Corporation)
Reason: Connection terminated by local host for suspend (0x05)
@ MGMT Event: Controller Suspended (0x002d) plen 1
Suspend state: Disconnected and not scanning (1)
> HCI Event: Disconnect Complete (0x05) plen 4
Status: Success (0x00)
Handle: 256
Reason: Connection Terminated By Local Host (0x16)

The expectation is that we should see Set Event Mask before completing
the suspend so that the `Disconnect Complete` doesn't wake us up.


Changes in v2:
- Added fixes tag and cc stable

net/bluetooth/hci_sync.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c
index 148ce629a59f..e6d804b82b67 100644
--- a/net/bluetooth/hci_sync.c
+++ b/net/bluetooth/hci_sync.c
@@ -5297,6 +5297,9 @@ int hci_suspend_sync(struct hci_dev *hdev)
return err;
}

+ /* Update event mask so only the allowed event can wakeup the host */
+ hci_set_event_mask_sync(hdev);
+
/* Only configure accept list if disconnect succeeded and wake
* isn't being prevented.
*/
@@ -5308,9 +5311,6 @@ int hci_suspend_sync(struct hci_dev *hdev)
/* Unpause to take care of updating scanning params */
hdev->scanning_paused = false;

- /* Update event mask so only the allowed event can wakeup the host */
- hci_set_event_mask_sync(hdev);
-
/* Enable event filter for paired devices */
hci_update_event_filter_sync(hdev);

--
2.37.1.359.gd136c6c3e2-goog


2022-07-25 23:14:32

by bluez.test.bot

[permalink] [raw]
Subject: RE: [v2] Bluetooth: Always set event mask on suspend

This is automated email and please do not reply to this email!

Dear submitter,

Thank you for submitting the patches to the linux bluetooth mailing list.
This is a CI test results with your patch series:
PW Link:https://patchwork.kernel.org/project/bluetooth/list/?series=662882

---Test result---

Test Summary:
CheckPatch PASS 2.00 seconds
GitLint PASS 1.15 seconds
SubjectPrefix PASS 0.85 seconds
BuildKernel PASS 35.92 seconds
BuildKernel32 PASS 31.56 seconds
Incremental Build with patchesPASS 48.37 seconds
TestRunner: Setup PASS 530.76 seconds
TestRunner: l2cap-tester PASS 16.93 seconds
TestRunner: bnep-tester PASS 6.37 seconds
TestRunner: mgmt-tester PASS 98.27 seconds
TestRunner: rfcomm-tester PASS 9.52 seconds
TestRunner: sco-tester PASS 9.30 seconds
TestRunner: smp-tester PASS 9.36 seconds
TestRunner: userchan-tester PASS 6.39 seconds



---
Regards,
Linux Bluetooth

2022-08-01 21:17:05

by patchwork-bot+bluetooth

[permalink] [raw]
Subject: Re: [PATCH v2] Bluetooth: Always set event mask on suspend

Hello:

This patch was applied to bluetooth/bluetooth-next.git (master)
by Luiz Augusto von Dentz <[email protected]>:

On Mon, 25 Jul 2022 15:34:21 -0700 you wrote:
> From: Abhishek Pandit-Subedi <[email protected]>
>
> When suspending, always set the event mask once disconnects are
> successful. Otherwise, if wakeup is disallowed, the event mask is not
> set before suspend continues and can result in an early wakeup.
>
> Fixes: 182ee45da083 ("Bluetooth: hci_sync: Rework hci_suspend_notifier")
> Cc: [email protected]
> Signed-off-by: Abhishek Pandit-Subedi <[email protected]>
>
> [...]

Here is the summary with links:
- [v2] Bluetooth: Always set event mask on suspend
https://git.kernel.org/bluetooth/bluetooth-next/c/ef61b6ea1544

You are awesome, thank you!
--
Deet-doot-dot, I am a bot.
https://korg.docs.kernel.org/patchwork/pwbot.html