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| author | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2022-08-11 14:20:46 -0700 |
|---|---|---|
| committer | Luiz Augusto von Dentz <luiz.von.dentz@intel.com> | 2022-08-25 16:26:15 -0700 |
| commit | 1fd02d56dae35b08e4cba8e6bd2c2e7ccff68ecc (patch) | |
| tree | e88c70bf7a649724e0d9116f7042bb1873db73d2 /net | |
| parent | b82a26d8633cc89367fac75beb3ec33061bea44a (diff) | |
| download | linux-1fd02d56dae35b08e4cba8e6bd2c2e7ccff68ecc.tar.gz | |
Bluetooth: hci_sync: Fix suspend performance regression
This attempts to fix suspend performance when there is no connections by
not updating the event mask.
Fixes: ef61b6ea1544 ("Bluetooth: Always set event mask on suspend")
Signed-off-by: Luiz Augusto von Dentz <luiz.von.dentz@intel.com>
Diffstat (limited to 'net')
| -rw-r--r-- | net/bluetooth/hci_sync.c | 24 |
1 files changed, 14 insertions, 10 deletions
diff --git a/net/bluetooth/hci_sync.c b/net/bluetooth/hci_sync.c index e6d804b82b67..5fe440cdc68d 100644 --- a/net/bluetooth/hci_sync.c +++ b/net/bluetooth/hci_sync.c @@ -5288,17 +5288,21 @@ int hci_suspend_sync(struct hci_dev *hdev) /* Prevent disconnects from causing scanning to be re-enabled */ hci_pause_scan_sync(hdev); - /* Soft disconnect everything (power off) */ - err = hci_disconnect_all_sync(hdev, HCI_ERROR_REMOTE_POWER_OFF); - if (err) { - /* Set state to BT_RUNNING so resume doesn't notify */ - hdev->suspend_state = BT_RUNNING; - hci_resume_sync(hdev); - return err; - } + if (hci_conn_count(hdev)) { + /* Soft disconnect everything (power off) */ + err = hci_disconnect_all_sync(hdev, HCI_ERROR_REMOTE_POWER_OFF); + if (err) { + /* Set state to BT_RUNNING so resume doesn't notify */ + hdev->suspend_state = BT_RUNNING; + hci_resume_sync(hdev); + return err; + } - /* Update event mask so only the allowed event can wakeup the host */ - hci_set_event_mask_sync(hdev); + /* 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. |