Re: [Linux-usb-users] hotpluging Sony DSC-f505v

Re: [Linux-usb-users] hotpluging Sony DSC-f505v

[Matthew Dharm]

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This sounds to me like the hotplug script isn't testing the range the same
way usb-storage does.  usb-storage does a low >= x >= high, and it sounds
like the scripts are doing strict > and <?

Matt

On Tue, Feb 27, 2001 at 04:36:19PM -0500, usb@house-o-fun.dhs.org wrote:
> DOH!
> So I decided to try just for giggles incrementing the device versionmax
> value and found that it happily installed the driver...  
> 
> Seems like a bug to me...
> 
> On Tue, 27 Feb 2001 usb@house-o-fun.dhs.org wrote:
> 
> > I have a sony DSC 505 still camera.  It works just fine out of the box on
> > the usb-storage driver when insmoded by hand.  My Sony usb floppy also
> > works quite well.  The biggest problem I have had is with hotplug.  When I
> > insert my floppy drive it pops to life.  All goes well with the hot-plug.
> > When I inster my sony I get Feb 27 04:11:41 chico /etc/hotplug/usb.agent: ... no drivers for USB product 54c/10/210
> > So I figured I would add one by hand.  Finding what the heck all the stuff
> > was for an entry was quite a chore.  I still don't know exactly what the
> > values of match flags mean...  ohter than they are a mask for which of the
> > other fields really matter.  Then I poked around for another sony device
> > 54c...  and found just what I was looking for sorry for the formatting
> > 
> > usb-storage          0x000f 0x054c   0x0010    0x0106       0x0210
> > 0x00         0x00            0x00            0x00            0x00
> > 0x00      
> > 
> > but wait!  That says it is for my camera!  it says the max version is 210
> > and mine is 210!  Not only that but from what I read the module itself
> > contains the info on what devices it supports...  so why would the driver
> > work and the hotplug not?  Something is fishy here...  please help
> > 				Keith Baker
> > 
> > 
> > _______________________________________________
> > Linux-usb-users@lists.sourceforge.net
> > To unsubscribe, use the last form field at:
> > http://lists.sourceforge.net/lists/listinfo/linux-usb-users
> > 
> 
> 
> _______________________________________________
> Linux-usb-users@lists.sourceforge.net
> To unsubscribe, use the last form field at:
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-- 
Matthew Dharm                              Home: mdharm-usb@one-eyed-alien.net 
Maintainer, Linux USB Mass Storage Driver

G:  Money isn't everything, A.J.
AJ: Who convinced you of that?
G:  The Chief, at my last salary review.
					-- Mike and Greg
User Friendly, 11/3/1998

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Re: [Linux-usb-users] hotpluging Sony DSC-f505v

[David Brownell]

> This sounds to me like the hotplug script isn't testing the range the same
> way usb-storage does.  usb-storage does a low >= x >= high, and it sounds
> like the scripts are doing strict > and <?

Yes.  Someone submitted a patch to do that a while back.
Where's the bug?


> > 54c...  and found just what I was looking for sorry for the formatting
> > 
> > usb-storage          0x000f 0x054c   0x0010    0x0106       0x0210
> > 0x00         0x00            0x00            0x00            0x00
> > 0x00      

That formatting is one reason I think an XML representation would be a lot
nicer to work with ... :-)

In fact there are scripts to turn the "modules.usbmap" into XML, in case
anyone wants to work with tools to massage (present, query, analyse, ...)
such data.

- Dave



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Re: [Linux-usb-users] hotpluging Sony DSC-f505v

[Matthew Dharm]

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On Tue, Feb 27, 2001 at 03:23:42PM -0800, David Brownell wrote:
> > This sounds to me like the hotplug script isn't testing the range the same
> > way usb-storage does.  usb-storage does a low >= x >= high, and it sounds
> > like the scripts are doing strict > and <?
> 
> Yes.  Someone submitted a patch to do that a while back.
> Where's the bug?

Umm... if the usb-storag driver will accept versions between 0.00 and 2.40
(inclusive), the hotplug scripts should auto-load the usb-storage driver
when the attached device has version 2.40 -- according to the report, they
do not do so, even though the usb-storage driver is capable of supporting
such devices.

So, is this a hotplug script problem or a usb-storage problem?  In other
words, which is the correct interpretatation of the version fields?

Matt

-- 
Matthew Dharm                              Home: mdharm-usb@one-eyed-alien.net 
Maintainer, Linux USB Mass Storage Driver

It was a new hope.
					-- Dust Puppy
User Friendly, 12/25/1998

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Re: [Linux-usb-users] hotpluging Sony DSC-f505v

[David Brownell]

> So, is this a hotplug script problem or a usb-storage problem?  In other
> words, which is the correct interpretatation of the version fields?

Since usbcore seems to agree with usb-storage on that question
(well enough that the kernel binding works), hotplug scripts.

Those code paths haven't previously been tested much; as you'll
recall, it's essentially "new in 2.4.1" (since it mostly affects handling
of usb-storage devices).  I'll check in a partial fix soon... it really be
nice if someone were to provide BASH patches to handle the 2.4.0
style bitmask testing of match_flags, and really nail the version handling.
(Would that require bash2?)

- Dave




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