diff options
| author | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2023-04-21 11:37:55 -0700 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2023-04-23 22:07:43 -0700 |
| commit | d883a4669a1def6d121ccf5e64ad28260d1c9531 (patch) | |
| tree | ff9b0a4339ccb01c05985d2a38fbacd1cf9056dc /net/bluetooth/mgmt.c | |
| parent | 20981ce2d5a5f79d17da1ace3a93df7b3c6ba3d6 (diff) | |
Bluetooth: hci_sync: Only allow hci_cmd_sync_queue if running
This makes sure hci_cmd_sync_queue only queue new work if HCI_RUNNING
has been set otherwise there is a risk of commands being sent while
turning off.
Because hci_cmd_sync_queue can no longer queue work while HCI_RUNNING is
not set it cannot be used to power on adapters so instead
hci_cmd_sync_submit is introduced which bypass the HCI_RUNNING check, so
it behaves like the old implementation.
Link: https://lore.kernel.org/all/CAB4PzUpDMvdc8j2MdeSAy1KkAE-D3woprCwAdYWeOc-3v3c9Sw@mail.gmail.com/
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Diffstat (limited to 'net/bluetooth/mgmt.c')
| -rw-r--r-- | net/bluetooth/mgmt.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 13c745876b39..f7b2d0971f24 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -1400,11 +1400,15 @@ static int set_powered(struct sock *sk, struct hci_dev *hdev, void *data, } /* Cancel potentially blocking sync operation before power off */ - if (cp->val == 0x00) + if (cp->val == 0x00) { __hci_cmd_sync_cancel(hdev, -EHOSTDOWN); - - err = hci_cmd_sync_queue(hdev, set_powered_sync, cmd, - mgmt_set_powered_complete); + err = hci_cmd_sync_queue(hdev, set_powered_sync, cmd, + mgmt_set_powered_complete); + } else { + /* Use hci_cmd_sync_submit since hdev might not be running */ + err = hci_cmd_sync_submit(hdev, set_powered_sync, cmd, + mgmt_set_powered_complete); + } if (err < 0) mgmt_pending_remove(cmd); |