linux-kernel - Re: [bluetooth] linux-3.x regression (bisected)

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Date:	Tue, 27 Dec 2011 23:22:48 -0200
From:	Gustavo Padovan <padovan@...fusion.mobi>
To:	Rene Herman <rene.herman@...il.com>
Cc:	Andre Guedes <andre.guedes@...nbossa.org>,
	linux-kernel@...r.kernel.org, linux-bluetooth@...r.kernel.org,
	Marcel Holtmann <marcel@...tmann.org>
Subject: Re: [bluetooth] linux-3.x regression (bisected)

Hi Rene,

* Rene Herman <rene.herman@...il.com> [2011-12-27 23:19:40 +0100]:

> On 27-12-11 21:30, Gustavo Padovan wrote:
> 
> >Seems your extfeatures is telling you something different from what it really
> >supports. Can you try with the following diff (use the dynamic debug that Andre
> >told you)
> 
> Attached. The result is "features: 0xff".
> 
> I suppose that (should) mean(s) "all features"; if that's not
> actually a valid possibility due, perhaps, to undefined or mutually
> exclusive bits then maybe it's an option to take 0xff to mean that
> the adapter doesn't in fact support any of them?
> 
> >Also the output of hcidump would nice.
> 
> If the below (which is what hcidump spit back at me at some as far
> as I could determine random moment) is not what you wanted, I
> believe you will need to specify which action to take while
> monitoring things with hcidump.
> 
> ==============
> HCI sniffer - Bluetooth packet analyzer ver 2.1
> device: hci0 snap_len: 1028 filter: 0xffffffff
> < HCI Command: Reset (0x03|0x0003) plen 0
> > HCI Event: Command Complete (0x0e) plen 4
>     Reset (0x03|0x0003) ncmd 1
>     status 0x00
> < HCI Command: Read Local Supported Features (0x04|0x0003) plen 0
> > HCI Event: Command Complete (0x0e) plen 12
>     Read Local Supported Features (0x04|0x0003) ncmd 1
>     status 0x00
>     Features: 0xff 0xfe 0xff 0x7e 0x98 0x19 0x00 0x80
> < HCI Command: Read Local Version Information (0x04|0x0001) plen 0
> > HCI Event: Command Complete (0x0e) plen 12
>     Read Local Version Information (0x04|0x0001) ncmd 1
>     status 0x00
>     HCI Version: 2.0 (0x3) HCI Revision: 0x2da
>     LMP Version: 2.0 (0x3) LMP Subversion: 0x2da
>     Manufacturer: Integrated System Solution Corp. (57)
> < HCI Command: Read Buffer Size (0x04|0x0005) plen 0
> > HCI Event: Command Complete (0x0e) plen 11
>     Read Buffer Size (0x04|0x0005) ncmd 1
>     status 0x00
>     ACL MTU 1021:4 SCO MTU 48:10
> < HCI Command: Read BD ADDR (0x04|0x0009) plen 0
> > HCI Event: Command Complete (0x0e) plen 10
>     Read BD ADDR (0x04|0x0009) ncmd 1
>     status 0x00 bdaddr 00:11:67:C0:12:9E
> < HCI Command: Read Class of Device (0x03|0x0023) plen 0
> > HCI Event: Command Complete (0x0e) plen 7
>     Read Class of Device (0x03|0x0023) ncmd 1
>     status 0x00 class 0x000000
> < HCI Command: Read Local Name (0x03|0x0014) plen 0
> > HCI Event: Command Complete (0x0e) plen 252
>     Read Local Name (0x03|0x0014) ncmd 1
>     status 0x00 name 'ISSCEDRBTA'
> < HCI Command: Read Voice Setting (0x03|0x0025) plen 0
> > HCI Event: Command Complete (0x0e) plen 6
>     Read Voice Setting (0x03|0x0025) ncmd 1
>     status 0x00 voice setting 0x0060
> < HCI Command: Set Event Filter (0x03|0x0005) plen 1
>     type 0 condition 0
>     Clear all filters
> > HCI Event: Command Complete (0x0e) plen 4
>     Set Event Filter (0x03|0x0005) ncmd 1
>     status 0x00
> < HCI Command: Write Connection Accept Timeout (0x03|0x0016) plen 2
>     timeout 32000
> > HCI Event: Command Complete (0x0e) plen 4
>     Write Connection Accept Timeout (0x03|0x0016) ncmd 1
>     status 0x00
> < HCI Command: Delete Stored Link Key (0x03|0x0012) plen 7
>     bdaddr 00:00:00:00:00:00 all 1
> > HCI Event: Command Complete (0x0e) plen 6
>     Delete Stored Link Key (0x03|0x0012) ncmd 1
>     status 0x00 deleted 0
> < HCI Command: Set Event Mask (0x03|0x0001) plen 8
>     Mask: 0xfffffbff07180000
> > HCI Event: Command Complete (0x0e) plen 4
>     Set Event Mask (0x03|0x0001) ncmd 1
>     status 0x00
> < HCI Command: Read Local Supported Commands (0x04|0x0002) plen 0
> > HCI Event: Command Complete (0x0e) plen 68
>     Read Local Supported Commands (0x04|0x0002) ncmd 1
>     status 0x00
>     Commands: ffffef03ceffffffffffff9ff30fe8ff3c
> < HCI Command: Write Inquiry Mode (0x03|0x0045) plen 1
>     mode 1
> > HCI Event: Command Complete (0x0e) plen 4
>     Write Inquiry Mode (0x03|0x0045) ncmd 1
>     status 0x00
> < HCI Command: Read Local Extended Features (0x04|0x0004) plen 1
>     page 1
> > HCI Event: Command Complete (0x0e) plen 14
>     Read Local Extended Features (0x04|0x0004) ncmd 1
>     status 0x00 page 0 max 0
>     Features: 0xff 0xfe 0xff 0x7e 0x98 0x19 0x00 0x80

For some reason your adapter is returning here the same value of Read Local
Features. I would say your device is broken.  The only fix I have in mind now
is throw away the device.

Marcel, do you have any idea or have seen this before?

	Gustavo
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