From 57b8144c39d59c4bc46511500990c62e6e879074 Mon Sep 17 00:00:00 2001 From: Johan Hedberg Date: Tue, 28 Feb 2012 00:57:24 +0200 Subject: [PATCH] Bluetooth: Don't send unnecessary write_le_enable command 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 Acked-by: Marcel Holtmann --- net/bluetooth/mgmt.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 27830f4016989..c4d3bc9c86b5a 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] & LMP_HOST_LE); - 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)) { -- 2.39.5