linux-kernel - Re: problem with "serial" driver in kernel 3.16.0

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Message-ID: <55FC6B6E.12823.3BD850@wilhelm.fastcomtec.com>
Date:	Fri, 18 Sep 2015 19:52:14 +0200
From:	"Dr. Wolfgang Wilhelm" <wilhelm@...tcomtec.com>
To:	Greg KH <greg@...ah.com>
CC:	stable@...r.kernel.org, Austin S Hemmelgarn <ahferroin7@...il.com>,
	linux-kernel@...r.kernel.org
Subject: Re: problem with "serial" driver in kernel 3.16.0

Yes, we make this card.

Here is a link to the mpa3 software for Windows and Wine/Linux 
including all sources of linux code and the driver fastmpa.ko:

http://www.fastcomtec.com/fwww/supp/mpa3/wmpa3.zip

username: mpa3
password: midas16

Wolfgang Wilhelm


On 18 Sep 2015 at 9:23 Greg KH wrote:

Datum:   	Fri, 18 Sep 2015 09:23:48 -0700
Von:            	Greg KH <greg@...ah.com>
An:             	Wolfgang Wilhelm <wilhelm@...tcomtec.com>
Kopie an:       	stable@...r.kernel.org, Austin S Hemmelgarn 
<ahferroin7@...il.com>,
	linux-kernel@...r.kernel.org
Betreff:        	Re: problem with "serial" driver in kernel 3.16.0



On Fri, Sep 18, 2015 at 11:24:05AM +0200, Wolfgang Wilhelm wrote:
> Thankyou very much for your quick answers. I searched now
> in the linux sources for the problem and I think I could find it
> in the file linux-source-3.16/drivers/tty/serial/8250/8250_pci.c
> 
> There is a function serial_pci_guessboard and a blacklist
> including the vendor- and device-ids of 3 softmodems and 
> 2 multi-io cards. I think if the vendor id 0x10e8 (standard AMCC)
> and device id 0x8226 could be inserted into that blacklist
> I could load our driver and get the software for our MPA-3 
> multiparameter system working. It seems that these id's are 
> not really used by any existing serial card, but this guessboard 
> function anyway takes our card as a serial board.

Who makes this card, you?  Why is the serial driver grabbing it if it
is
not a serial device?

> Is this a matter of the Debian distribution or the general linux
kernel?

The kernel is responsible for this, but I would like to see your
driver
before marking this device as blacklisted.  Do you have a pointer to
the
source for it anywhere?

thanks,

greg k-h

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