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Subject[PATCH 4.14 078/193] Bluetooth: btqcomsmd: Add support for BD address setup
Date
4.14-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Loic Poulain <loic.poulain@linaro.org>

commit 6e518111060c2290427d79c43d4add9600ad852b upstream.

This patch implements the hdev setup function since wcnss-bt does not have
persistent memory to store an allocated BD address. The device is therefore
marked as unconfigured if no BD address has been previously retrieved.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

---
drivers/bluetooth/btqcomsmd.c | 34 ++++++++++++++++++++++++++++++++++
1 file changed, 34 insertions(+)

--- a/drivers/bluetooth/btqcomsmd.c
+++ b/drivers/bluetooth/btqcomsmd.c
@@ -26,6 +26,7 @@
struct btqcomsmd {
struct hci_dev *hdev;

+ bdaddr_t bdaddr;
struct rpmsg_endpoint *acl_channel;
struct rpmsg_endpoint *cmd_channel;
};
@@ -100,6 +101,38 @@ static int btqcomsmd_close(struct hci_de
return 0;
}

+static int btqcomsmd_setup(struct hci_dev *hdev)
+{
+ struct btqcomsmd *btq = hci_get_drvdata(hdev);
+ struct sk_buff *skb;
+ int err;
+
+ skb = __hci_cmd_sync(hdev, HCI_OP_RESET, 0, NULL, HCI_INIT_TIMEOUT);
+ if (IS_ERR(skb))
+ return PTR_ERR(skb);
+ kfree_skb(skb);
+
+ /* Devices do not have persistent storage for BD address. If no
+ * BD address has been retrieved during probe, mark the device
+ * as having an invalid BD address.
+ */
+ if (!bacmp(&btq->bdaddr, BDADDR_ANY)) {
+ set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
+ return 0;
+ }
+
+ /* When setting a configured BD address fails, mark the device
+ * as having an invalid BD address.
+ */
+ err = qca_set_bdaddr_rome(hdev, &btq->bdaddr);
+ if (err) {
+ set_bit(HCI_QUIRK_INVALID_BDADDR, &hdev->quirks);
+ return 0;
+ }
+
+ return 0;
+}
+
static int btqcomsmd_probe(struct platform_device *pdev)
{
struct btqcomsmd *btq;
@@ -135,6 +168,7 @@ static int btqcomsmd_probe(struct platfo
hdev->open = btqcomsmd_open;
hdev->close = btqcomsmd_close;
hdev->send = btqcomsmd_send;
+ hdev->setup = btqcomsmd_setup;
hdev->set_bdaddr = qca_set_bdaddr_rome;

ret = hci_register_dev(hdev);

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