Bluetooth: Add support for Broadcom device of Asus Z97-DELUXE motherboard

Bug #1375522 reported by Mark D Baushke
This bug affects 4 people
Affects Status Importance Assigned to Milestone
Mactel Support

Bug Description

On a stock ubuntu 14.04 amd64 system with an Asus Z97-DELUXE mother board,
I am unable to use Bluetooth.

This is what I see without the patch installed:

$ dmesg | grep -A 3 0b05
[ 2.136473] usb 3-2: New USB device found, idVendor=0b05, idProduct=17cf
[ 2.136475] usb 3-2: New USB device strings: Mfr=1, Product=2, SerialNumber=3
[ 2.136477] usb 3-2: Product: BCM20702A0
[ 2.136478] usb 3-2: Manufacturer: Broadcom Corp

The following patch to ubuntu 14.04 kernel linux-3.13.0/drivers/bluetooth/btusb.c
works to let the Bluetooth device be properly recognized:

patch id c2aef6e: (c2aef6e8cbebd60f79555baeb9266e220f135a44)

diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index b062bed..292c38e 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -114,6 +114,9 @@
  { USB_VENDOR_AND_INTERFACE_INFO(0x0a5c, 0xff, 0x01, 0x01),
    .driver_info = BTUSB_BCM_PATCHRAM },

+ /* ASUSTek Computer - Broadcom based */
+ { USB_VENDOR_AND_INTERFACE_INFO(0x0b05, 0xff, 0x01, 0x01) },
  /* Belkin F8065bf - Broadcom based */
  { USB_VENDOR_AND_INTERFACE_INFO(0x050d, 0xff, 0x01, 0x01) },

Works for me in my ubuntu-trusty patched kernel.
I do not see it in linux-stable yet, but it would be nice if it were in both ubuntu-trusty and ubuntu-utopic.

(I had the patch installed in my personal build of 3.13.0-32, but a recent upgrade
took me to 3.13.0-36 and I lost the patch without going back to reboot the
older kernel.)

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