RE: [PATCH] Bluetooth: btusb: Add Qualcomm Atheros AR3006 in blacklist_table

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Hi Marcel,

> -----Original Message-----
> From: Marcel Holtmann [mailto:marcel@xxxxxxxxxxxx]
> Sent: 2011年11月16日 21:29
> To: Yao, Costa
> Cc: padovan@xxxxxxxxxxxxxx; linux-bluetooth@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH] Bluetooth: btusb: Add Qualcomm Atheros AR3006 in
> blacklist_table
> 
> Hi Costa,
> 
> > Signed-off-by: Costa Yao <cqyao@xxxxxxxxxxxxxxxx>
> > ---
> >  drivers/bluetooth/btusb.c |    5 ++++-
> >  1 files changed, 4 insertions(+), 1 deletions(-)
> >
> > diff --git a/drivers/bluetooth/btusb.c b/drivers/bluetooth/btusb.c
> > index 39dd65c..94124ad 100644
> > --- a/drivers/bluetooth/btusb.c
> > +++ b/drivers/bluetooth/btusb.c
> > @@ -55,6 +55,7 @@ static struct usb_driver btusb_driver;
> >  #define BTUSB_BROKEN_ISOC	0x20
> >  #define BTUSB_WRONG_SCO_MTU	0x40
> >  #define BTUSB_ATH3012		0x80
> > +#define BTUSB_ATH3006		0x0100
> >
> >  static struct usb_device_id btusb_table[] = {
> >  	/* Bluetooth USB interface */
> > @@ -125,6 +126,7 @@ static struct usb_device_id blacklist_table[] = {
> >
> >  	/* Atheros 3012 with sflash firmware */
> >  	{ USB_DEVICE(0x0cf3, 0x3004), .driver_info = BTUSB_ATH3012 },
> > +	{ USB_DEVICE(0x0cf3, 0x3006), .driver_info = BTUSB_ATH3006 },
> >
> >  	/* Atheros AR5BBU12 with sflash firmware */
> >  	{ USB_DEVICE(0x0489, 0xe02c), .driver_info = BTUSB_IGNORE }, @@
> > -937,7 +939,8 @@ static int btusb_probe(struct usb_interface *intf,
> >  	if (ignore_sniffer && id->driver_info & BTUSB_SNIFFER)
> >  		return -ENODEV;
> >
> > -	if (id->driver_info & BTUSB_ATH3012) {
> > +	if ((id->driver_info & BTUSB_ATH3012) ||
> > +				(id->driver_info & BTUSB_ATH3006)) {
> >  		struct usb_device *udev = interface_to_usbdev(intf);
> >
> >  		/* Old firmware would otherwise let ath3k driver load
> 
>         if (id->driver_info & BTUSB_ATH3012) {
>                 struct usb_device *udev = interface_to_usbdev(intf);
> 
>                 /* Old firmware would otherwise let ath3k driver load
>                  * patch and sysconfig files */
>                 if (le16_to_cpu(udev->descriptor.bcdDevice) <= 0x0001)
>                         return -ENODEV;
>         }
> 
> are you sure this is true for the 3006 as well? Otherwise just using the
> BTUSB_IGNORE quirk to blacklist a device would be enough.
> 
I send this patch just for a 3012 chip, with PID 3006. Because we need to separate it with another 3012 chip(PID 3004).
So we use BTUSB_ATH3012 for PID 3004 and BTUSB_ATH3006 for PID 3006.

And I am sure that we need use this quirk, not BTUSB_IGNORE. Because we need to check whether chip has been patched or not through bcdDevice value.
> And start writing detailed commit message that explains why this quirk is
> correct and needed.
> 
> Regards
> 
> Marcel
> 

Best wishes,
Costa Yao
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