Re: Media autochanger driver changed behavior.

[Jesper Krogh <jesper@krogh.cc>]

James Bottomley wrote:
> On Wed, 2008-07-09 at 23:56 +0200, Jesper Krogh wrote:
>> James Bottomley wrote:
>>> On Wed, 2008-07-09 at 22:51 +0200, Jesper Krogh wrote:
>>>> Hi.
>>>>
>>>> Upgrading the OS from an quite old kernel to a newer (2.6.24) changed
>>>> the behavior of the "ch" driver. Now it does a inventory to the changer
>>>> on load. This command makes the barcode-reader scan the entire library
>>>> at driver load time.
>>> Do I take it from this that your old kernel simply didn't auto load the
>>> ch driver?  or that something has changed in the way the driver now
>>> works?
>> It sure did load the driver and it worked just fine. It just didnt make 
>> the library unit force scan the barcodes. (the library do that on bootup 
>> by itself, but it can be forced with mtx over the changer device).
>>
>> mtx -f /dev/changer inventory => Force scans barcodes
>> mtx -f /dev/changer status => Reads out the barcodes labels and slots
>> from the changer device without forcing the library to scan.
>> (note I dont know if it is library specific).
> 
> OK, so it's not the autoloading code which I thought it might be.
> 
> Which is the latest version of the kernel that works? ... that will at
> least give me the set of changes to look at.

I cant give you that, since I havent testet all, but I'm quite sure 
2.6.20 worked,
completely sure that 2.6.15 was Ok.

I know this is a large timespan, sorry.

-- 
Jesper