Bluetooth: hci_ll: Add endianness conversion when setting baudrate

This adds an endianness conversion when setting the baudrate using a
vendor-specific command. Otherwise, bad things might happen on a big-
endian system.

Suggested-by: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: David Lechner <david@lechnology.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/drivers/bluetooth/hci_ll.c b/drivers/bluetooth/hci_ll.c
index 974a78879d20..efcfbe9aac21 100644
--- a/drivers/bluetooth/hci_ll.c
+++ b/drivers/bluetooth/hci_ll.c
@@ -707,10 +707,12 @@ static int ll_setup(struct hci_uart *hu)
                 speed = 0;
 
         if (speed) {
+                __le32 speed_le = cpu_to_le32(speed);
                 struct sk_buff *skb;
 
                 skb = __hci_cmd_sync(hu->hdev, HCI_VS_UPDATE_UART_HCI_BAUDRATE,
-                                     sizeof(speed), &speed, HCI_INIT_TIMEOUT);
+                                     sizeof(speed_le), &speed_le,
+                                     HCI_INIT_TIMEOUT);
                 if (!IS_ERR(skb)) {
                         kfree_skb(skb);
                         serdev_device_set_baudrate(serdev, speed);