On 06/28/2015 04:49 PM, Xi Ruoyao wrote:
In the USB device table in btusb driver, the code specify a generic Bluetooth
device by matching Device Descriptor. However, some devices with BT interface
are classified as "Miscellaneous Device" and have different Device Descriptor,
such as Realtek RTL8723AU. Then btusb wouldn't probe them.
To resolve this, specify generic Bluetooth device in the USB device table by
matching Interface Descriptor, to probe all devices with Bluetooth interface
including these "Miscellaneous" ones.
Signed-off-by: Xi Ruoyao <xry...@outlook.com>
---
The Bluetooth USB driver changed a lot since 4.1 released. However this problem
still exists now, so I think I should resend this patch.
I have now been able to get this patch tested through the repo at GitHub.com. My
testers concur that this allows the BT part of the RTL8723AU to load.
Acked-by: Larry Finger <larry.fin...@lwfinger.net>
Thanks,
Larry
After apply this patch, my RTL8723AU works well. This is the info of the
RTL8723AU
USB device:
T: Bus=03 Lev=02 Prnt=02 Port=03 Cnt=03 Dev#= 5 Spd=480 MxCh= 0
D: Ver= 2.00 Cls=ef(misc ) Sub=02 Prot=01 MxPS=64 #Cfgs= 1
P: Vendor=0bda ProdID=1724 Rev= 2.00
S: Manufacturer=Realtek
S: Product=802.11n WLAN Adapter
S: SerialNumber=00e04c000001
C:* #Ifs= 3 Cfg#= 1 Atr=e0 MxPwr=500mA
A: FirstIf#= 0 IfCount= 2 Cls=e0(wlcon) Sub=01 Prot=01
I:* If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=81(I) Atr=03(Int.) MxPS= 16 Ivl=1ms
E: Ad=02(O) Atr=02(Bulk) MxPS= 512 Ivl=0ms
E: Ad=82(I) Atr=02(Bulk) MxPS= 512 Ivl=0ms
I:* If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=03(O) Atr=01(Isoc) MxPS= 0 Ivl=1ms
E: Ad=83(I) Atr=01(Isoc) MxPS= 0 Ivl=1ms
I: If#= 1 Alt= 1 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=03(O) Atr=01(Isoc) MxPS= 9 Ivl=1ms
E: Ad=83(I) Atr=01(Isoc) MxPS= 9 Ivl=1ms
I: If#= 1 Alt= 2 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=03(O) Atr=01(Isoc) MxPS= 17 Ivl=1ms
E: Ad=83(I) Atr=01(Isoc) MxPS= 17 Ivl=1ms
I: If#= 1 Alt= 3 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=03(O) Atr=01(Isoc) MxPS= 25 Ivl=1ms
E: Ad=83(I) Atr=01(Isoc) MxPS= 25 Ivl=1ms
I: If#= 1 Alt= 4 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=03(O) Atr=01(Isoc) MxPS= 33 Ivl=1ms
E: Ad=83(I) Atr=01(Isoc) MxPS= 33 Ivl=1ms
I: If#= 1 Alt= 5 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
E: Ad=03(O) Atr=01(Isoc) MxPS= 49 Ivl=1ms
E: Ad=83(I) Atr=01(Isoc) MxPS= 49 Ivl=1ms
drivers/bluetooth/btusb.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
index b4cf8d9..950afda 100644
--- a/drivers/bluetooth/btusb.c
+++ b/drivers/bluetooth/btusb.c
@@ -63,7 +63,7 @@ static struct usb_driver btusb_driver;
static const struct usb_device_id btusb_table[] = {
/* Generic Bluetooth USB device */
- { USB_DEVICE_INFO(0xe0, 0x01, 0x01) },
+ { USB_INTERFACE_INFO(0xe0, 0x01, 0x01) },
/* Generic Bluetooth AMP device */
{ USB_DEVICE_INFO(0xe0, 0x01, 0x04), .driver_info = BTUSB_AMP },
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
