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Bluetooth: btusb: Add helper for READ_LOCAL_VERSION command 

Multiple codepaths duplicate some simple code to read and
sanity-check local version information. Before I add a couple more
such codepaths, add a helper to reduce duplication.

Signed-off-by: Daniel Drake <drake@endlessm.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Daniel Drake 2015-02-23 18:16:47 -06:00 committed by Johan Hedberg
parent 238be788fc
commit 6576fe4afc
1 changed files with 28 additions and 32 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

60
drivers/bluetooth/btusb.c
View File

@ -1269,6 +1269,28 @@ static void btusb_waker(struct work_struct *work)
usb_autopm_put_interface(data->intf);
}
static struct sk_buff *btusb_read_local_version(struct hci_dev *hdev)
{
struct sk_buff *skb;
skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
hdev->name, PTR_ERR(skb));
return skb;
}
if (skb->len != sizeof(struct hci_rp_read_local_version)) {
BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
hdev->name);
kfree_skb(skb);
return ERR_PTR(-EIO);
}
return skb;
}
static int btusb_setup_bcm92035(struct hci_dev *hdev)
{
struct sk_buff *skb;
@ -1293,12 +1315,9 @@ static int btusb_setup_csr(struct hci_dev *hdev)
BT_DBG("%s", hdev->name);
skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
BT_ERR("Reading local version failed (%ld)", -PTR_ERR(skb));
skb = btusb_read_local_version(hdev);
if (IS_ERR(skb))
return -PTR_ERR(skb);
}
rp = (struct hci_rp_read_local_version *)skb->data;
@ -2429,21 +2448,9 @@ static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
kfree_skb(skb);
/* Read Local Version Info */
skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
HCI_INIT_TIMEOUT);
if (IS_ERR(skb)) {
ret = PTR_ERR(skb);
BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
hdev->name, ret);
return ret;
}
if (skb->len != sizeof(*ver)) {
BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
hdev->name);
kfree_skb(skb);
return -EIO;
}
skb = btusb_read_local_version(hdev);
if (IS_ERR(skb))
return PTR_ERR(skb);
ver = (struct hci_rp_read_local_version *)skb->data;
rev = le16_to_cpu(ver->hci_rev);
@ -2531,20 +2538,9 @@ static int btusb_setup_bcm_patchram(struct hci_dev *hdev)
kfree_skb(skb);
/* Read Local Version Info */
skb = __hci_cmd_sync(hdev, HCI_OP_READ_LOCAL_VERSION, 0, NULL,
HCI_INIT_TIMEOUT);
skb = btusb_read_local_version(hdev);
if (IS_ERR(skb)) {
ret = PTR_ERR(skb);
BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION failed (%ld)",
hdev->name, ret);
goto done;
}
if (skb->len != sizeof(*ver)) {
BT_ERR("%s: HCI_OP_READ_LOCAL_VERSION event length mismatch",
hdev->name);
kfree_skb(skb);
ret = -EIO;
goto done;
}