[PATCH 1/2] Bluetooth: Don't send unnecessary write_le_enable command
From: <hidden>
Date: 2012-02-27 23:41:33
Subsystem:
bluetooth subsystem, the rest · Maintainers:
Marcel Holtmann, Luiz Augusto von Dentz, Linus Torvalds
From: Johan Hedberg <redacted> If the local host features indicate that LE is already in the state that is desired there's no point in sending the HCI command to try to change the setting. Signed-off-by: Johan Hedberg <redacted> --- net/bluetooth/mgmt.c | 5 +++-- 1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index 27830f4..5373bc1 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c@@ -1260,7 +1260,7 @@ static int set_le(struct sock *sk, u16 index, void *data, u16 len) struct pending_cmd *cmd; struct hci_dev *hdev; int err; - u8 val; + u8 val, enabled; BT_DBG("request for hci%u", index);
@@ -1280,8 +1280,9 @@ static int set_le(struct sock *sk, u16 index, void *data, u16 len) } val = !!cp->val; + enabled = !!(hdev->host_features[0] & 0x02); - if (!hdev_is_powered(hdev)) { + if (!hdev_is_powered(hdev) || val == enabled) { bool changed = false; if (val != test_bit(HCI_LE_ENABLED, &hdev->dev_flags)) {
--
1.7.9.1