From efcd8c98e0d195c09fd9141a7af32dd83e62a5cb Mon Sep 17 00:00:00 2001 From: Marcel Holtmann Date: Sat, 28 Mar 2015 15:18:58 -0700 Subject: [PATCH] Bluetooth: Move memory location outside of hci_dev lock Taking the hci_dev lock for just a memory allocation seems a bit too much and not really needed. So instead try to allocate the memory first and then take the lock. Signed-off-by: Marcel Holtmann Signed-off-by: Johan Hedberg --- net/bluetooth/mgmt.c | 14 ++++++-------- 1 file changed, 6 insertions(+), 8 deletions(-) diff --git a/net/bluetooth/mgmt.c b/net/bluetooth/mgmt.c index 29cbd98f4649..a9a0036ff0a7 100644 --- a/net/bluetooth/mgmt.c +++ b/net/bluetooth/mgmt.c @@ -6446,14 +6446,12 @@ static int read_local_oob_ext_data(struct sock *sk, struct hci_dev *hdev, &cp->type, sizeof(cp->type)); } - hci_dev_lock(hdev); - rp_len = sizeof(*rp) + eir_len; rp = kmalloc(rp_len, GFP_ATOMIC); - if (!rp) { - hci_dev_unlock(hdev); + if (!rp) return -ENOMEM; - } + + hci_dev_lock(hdev); eir_len = 0; switch (cp->type) { @@ -6517,13 +6515,13 @@ static int read_local_oob_ext_data(struct sock *sk, struct hci_dev *hdev, break; } - rp->type = cp->type; - rp->eir_len = cpu_to_le16(eir_len); - hci_dev_unlock(hdev); hci_sock_set_flag(sk, HCI_MGMT_OOB_DATA_EVENTS); + rp->type = cp->type; + rp->eir_len = cpu_to_le16(eir_len); + err = mgmt_cmd_complete(sk, hdev->id, MGMT_OP_READ_LOCAL_OOB_EXT_DATA, MGMT_STATUS_SUCCESS, rp, sizeof(*rp) + eir_len); if (err < 0) -- GitLab