commit 13ecd8b6628c14c9a27832ce7c48315385272208
author Johan Hedberg <johan.hedberg@intel.com> Wed Jan 09 15:29:38 2013 +0200
committer Gustavo Padovan <gustavo.padovan@collabora.co.uk> Thu Jan 10 06:09:59 2013 -0200
tree 6bf0201d29c30f3c79650e4dc87ee1df6512bb63
parent ee98f4738050bb93823ce9ba849f5d78f5b8c1a1

Bluetooth: Move non-critical sections outside of the dev lock

This patch fixes sections of code that do not need hci_lock_dev to be
outside of the lock. Such sections include code that do not touch the
hdev at all as well as sections which just read a single byte from the
supported_features value (i.e. all lmp_*_capable() macros).

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Acked-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>

net/bluetooth/mgmt.c

diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c
index d78ce81..28e01f9 100644
--- a/net/bluetooth/mgmt.c
+++ b/net/bluetooth/mgmt.c
@@ -1133,13 +1133,11 @@
 
 	BT_DBG("request for %s", hdev->name);
 
-	hci_dev_lock(hdev);
+	if (!lmp_ssp_capable(hdev))
+		return cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,
+				  MGMT_STATUS_NOT_SUPPORTED);
 
-	if (!lmp_ssp_capable(hdev)) {
-		err = cmd_status(sk, hdev->id, MGMT_OP_SET_SSP,
-				 MGMT_STATUS_NOT_SUPPORTED);
-		goto failed;
-	}
+	hci_dev_lock(hdev);
 
 	val = !!cp->val;
 
@@ -1217,13 +1215,11 @@
 
 	BT_DBG("request for %s", hdev->name);
 
-	hci_dev_lock(hdev);
+	if (!lmp_le_capable(hdev))
+		return cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
+				  MGMT_STATUS_NOT_SUPPORTED);
 
-	if (!lmp_le_capable(hdev)) {
-		err = cmd_status(sk, hdev->id, MGMT_OP_SET_LE,
-				 MGMT_STATUS_NOT_SUPPORTED);
-		goto unlock;
-	}
+	hci_dev_lock(hdev);
 
 	val = !!cp->val;
 	enabled = lmp_host_le_capable(hdev);
@@ -1422,26 +1418,20 @@
 
 	BT_DBG("request for %s", hdev->name);
 
+	if (!lmp_bredr_capable(hdev))
+		return cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
+				  MGMT_STATUS_NOT_SUPPORTED);
+
+	if (test_bit(HCI_PENDING_CLASS, &hdev->dev_flags))
+		return cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
+				  MGMT_STATUS_BUSY);
+
+	if ((cp->minor & 0x03) != 0 || (cp->major & 0xe0) != 0)
+		return cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
+				  MGMT_STATUS_INVALID_PARAMS);
+
 	hci_dev_lock(hdev);
 
-	if (!lmp_bredr_capable(hdev)) {
-		err = cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
-				 MGMT_STATUS_NOT_SUPPORTED);
-		goto unlock;
-	}
-
-	if (test_bit(HCI_PENDING_CLASS, &hdev->dev_flags)) {
-		err = cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
-				 MGMT_STATUS_BUSY);
-		goto unlock;
-	}
-
-	if ((cp->minor & 0x03) != 0 || (cp->major & 0xe0) != 0) {
-		err = cmd_status(sk, hdev->id, MGMT_OP_SET_DEV_CLASS,
-				 MGMT_STATUS_INVALID_PARAMS);
-		goto unlock;
-	}
-
 	hdev->major_class = cp->major;
 	hdev->minor_class = cp->minor;