Re: [PATCH] Bluetooth: hci_sync: Using hci_cmd_sync_submit when removing Adv Monitor

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Dear Chun-Yi,


Thank you for your patch.

Am 24.04.24 um 15:59 schrieb Lee, Chun-Yi:
From: Chun-Yi Lee <jlee@xxxxxxxx>

Please use imperative mood in the commit message summary:

Use hci_cmd_sync_submit() when removing Adv Monitor

Since the d883a4669a1de be introduced in v6.4, bluetooth daemon
got the following failed message of MGMT_OP_REMOVE_ADV_MONITOR
command when controller is power-off:

Maybe:

Since commit d883a4669a1de, present since Linux v6.4, the daemon bluetoothd logs the failure below, if the command MGMT_OP_REMOVE_ADV_MONITOR is sent when the controller is powered off.

bluetoothd[20976]:
src/adapter.c:reset_adv_monitors_complete() Failed to reset Adv
Monitors: Failed>

Please make this one line and indent it with four spaces.

Normally this situation is happened when the bluetoothd deamon

1.  happen*s*
2.  d*ae*mon

be started manually after system booting. Which means that

is started

bluetoothd received MGMT_EV_INDEX_ADDED event after kernel

receive*s*

runs hci_power_off().

Base on doc/mgmt-api.txt, the MGMT_OP_REMOVE_ADV_MONITOR command

Base*d*

can be used when the controller is not powered. This patch changes

“This patch …” is redundant. Use: Change the code …

the code in remove_adv_monitor() to use hci_cmd_sync_submit()
instead of hci_cmd_sync_queue().

Please document the test setup.

Fixes: d883a4669a1de ("Bluetooth: hci_sync: Only allow hci_cmd_sync_queue if running")
Cc: Luiz Augusto von Dentz <luiz.von.dentz@xxxxxxxxx>
Cc: Manish Mandlik <mmandlik@xxxxxxxxxx>
Cc: Archie Pusaka <apusaka@xxxxxxxxxxxx>
Cc: Miao-chen Chou <mcchou@xxxxxxxxxxxx>
Signed-off-by: Chun-Yi Lee <jlee@xxxxxxxx>
---
  net/bluetooth/mgmt.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 32ed6e9245a3..21962969411d 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -5475,7 +5475,7 @@ static int remove_adv_monitor(struct sock *sk, struct hci_dev *hdev,
  		goto unlock;
  	}
- err = hci_cmd_sync_queue(hdev, mgmt_remove_adv_monitor_sync, cmd,
+	err = hci_cmd_sync_submit(hdev, mgmt_remove_adv_monitor_sync, cmd,
  				 mgmt_remove_adv_monitor_complete);
if (err) {


Kind regards,

Paul




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