openwrt/target/linux/brcm-2.4/patches/005-bluetooth_sco_buffer_align.patch

--- a/drivers/bluetooth/hci_usb.c
+++ b/drivers/bluetooth/hci_usb.c
@@ -259,6 +259,9 @@ static int hci_usb_isoc_rx_submit(struct
 	void *buf;
 
 	mtu  = husb->isoc_in_ep->wMaxPacketSize;
+#ifdef CONFIG_BCM4710
+	mtu = (mtu + 1) & ~1;		/* brcm: isoc buffers must be aligned on word boundary */
+#endif
         size = mtu * HCI_MAX_ISOC_FRAMES;
 
 	buf = kmalloc(size, GFP_ATOMIC);