re: 2.6.0-test 4 and USB

re: 2.6.0-test 4 and USB

[watermodem]

I forgot to note on the USB and CUPs problem that I see the USB tree 
under "/sys/bus/usb" where-as under /proc/bus/usb I see nothing.
This may break a lot of existing code... Is is suppose to be this way?

Re: 2.6.0-test 4 and USB

[Blake B.]

watermodem wrote:
> I forgot to note on the USB and CUPs problem that I see the USB tree 
> under "/sys/bus/usb" where-as under /proc/bus/usb I see nothing.
> This may break a lot of existing code... Is is suppose to be this way?
> 
> 
> 

Read /linux-kernel-source/Documentation/usb/proc_usb_info.txt

-b-

Re: 2.6.0-test 4 and USB

[Bill Davidsen]

On Wed, 3 Sep 2003, Blake B. wrote:

> watermodem wrote:
> > I forgot to note on the USB and CUPs problem that I see the USB tree 
> > under "/sys/bus/usb" where-as under /proc/bus/usb I see nothing.
> > This may break a lot of existing code... Is is suppose to be this way?
> > 
> > 
> > 
> 
> Read /linux-kernel-source/Documentation/usb/proc_usb_info.txt

I must be missing something, the mount command from that file doesn't
seem to solve the original poster's problem, the /proc/bus/usb is still
empty...

================================================================

>From root@oddball.prodigy.com Wed Sep  3 15:47:22 2003
Subject: USB proc stuff
From: root <root@oddball.prodigy.com>
Date: Wed, 3 Sep 2003 13:19:15 -0400
To: davidsen@tmr.com

oddball:root> mount -t usbfs none /proc/bus/usb
oddball:root> df
Filesystem           1k-blocks      Used Available Use% Mounted on
/dev/hda3              2522076   2338380     55580  98% /
/dev/hda1                23302     20030      2069  91% /boot
/dev/hda5              1510032    265388   1167936  19% /home
/dev/hdb3              1474320    897712    501716  65% /usr/src
none                     46776         0     46776   0% /dev/shm
oddball:root> mount -t usbfs none /proc/bus/usb
mount: none already mounted or /proc/bus/usb busy
mount: according to mtab, none is already mounted on /proc/bus/usb
oddball:root> lc /proc/bus/usb
oddball:root> l -aR /proc/bus/usb
/proc/bus/usb:
total 0
drwxr-xr-x    2 root            0 Sep  3 13:17 .
dr-xr-xr-x    6 root            0 Sep  3 13:17 ..
oddball:root> lc /sys/b
block  bus
oddball:root> lc /sys/bus/usb/
devices/  drivers/
oddball:root>
================================================================

I did the mount, checked that it worked, and the data still seems
missing. Before you ask, lc is an alias for "ls -CF" and a leftover
reflex from a previous o/s.

I did drag and drop on the mount command from the file you quote, o/s is
2.4.0-test4 with only Nick's v7 scheduler patch.

Re: 2.6.0-test 4 and USB

[Blake B.]

Hmm... once I mounted the usbfs, and had the proper modules loaded 
(uhci-usb, etc...) /proc/bus/usb was populated.

My guess is the appropriate modules are not being loaded for whatever 
hardware you/they have.

-b-

Bill Davidsen wrote:
>>Read /linux-kernel-source/Documentation/usb/proc_usb_info.txt
> 
> 
> I must be missing something, the mount command from that file doesn't
> seem to solve the original poster's problem, the /proc/bus/usb is still
> empty...
> 
> ================================================================
> 
> From root@oddball.prodigy.com Wed Sep  3 15:47:22 2003
> Subject: USB proc stuff
> From: root <root@oddball.prodigy.com>
> Date: Wed, 3 Sep 2003 13:19:15 -0400
> To: davidsen@tmr.com
> 
> oddball:root> mount -t usbfs none /proc/bus/usb
> oddball:root> df
> Filesystem           1k-blocks      Used Available Use% Mounted on
> /dev/hda3              2522076   2338380     55580  98% /
> /dev/hda1                23302     20030      2069  91% /boot
> /dev/hda5              1510032    265388   1167936  19% /home
> /dev/hdb3              1474320    897712    501716  65% /usr/src
> none                     46776         0     46776   0% /dev/shm
> oddball:root> mount -t usbfs none /proc/bus/usb
> mount: none already mounted or /proc/bus/usb busy
> mount: according to mtab, none is already mounted on /proc/bus/usb
> oddball:root> lc /proc/bus/usb
> oddball:root> l -aR /proc/bus/usb
> /proc/bus/usb:
> total 0
> drwxr-xr-x    2 root            0 Sep  3 13:17 .
> dr-xr-xr-x    6 root            0 Sep  3 13:17 ..
> oddball:root> lc /sys/b
> block  bus
> oddball:root> lc /sys/bus/usb/
> devices/  drivers/
> oddball:root>
> ================================================================
> 
> I did the mount, checked that it worked, and the data still seems
> missing. Before you ask, lc is an alias for "ls -CF" and a leftover
> reflex from a previous o/s.
> 
> I did drag and drop on the mount command from the file you quote, o/s is
> 2.4.0-test4 with only Nick's v7 scheduler patch.
> 

Re: 2.6.0-test 4 and USB

[Greg KH]

On Wed, Sep 03, 2003 at 03:54:11PM -0400, Bill Davidsen wrote:
> On Wed, 3 Sep 2003, Blake B. wrote:
> 
> > watermodem wrote:
> > > I forgot to note on the USB and CUPs problem that I see the USB tree 
> > > under "/sys/bus/usb" where-as under /proc/bus/usb I see nothing.
> > > This may break a lot of existing code... Is is suppose to be this way?
> > > 
> > > 
> > > 
> > 
> > Read /linux-kernel-source/Documentation/usb/proc_usb_info.txt
> 
> I must be missing something, the mount command from that file doesn't
> seem to solve the original poster's problem, the /proc/bus/usb is still
> empty...
> 
> ================================================================
> 
> >From root@oddball.prodigy.com Wed Sep  3 15:47:22 2003
> Subject: USB proc stuff
> From: root <root@oddball.prodigy.com>
> Date: Wed, 3 Sep 2003 13:19:15 -0400
> To: davidsen@tmr.com
> 
> oddball:root> mount -t usbfs none /proc/bus/usb
> oddball:root> df
> Filesystem           1k-blocks      Used Available Use% Mounted on
> /dev/hda3              2522076   2338380     55580  98% /
> /dev/hda1                23302     20030      2069  91% /boot
> /dev/hda5              1510032    265388   1167936  19% /home
> /dev/hdb3              1474320    897712    501716  65% /usr/src
> none                     46776         0     46776   0% /dev/shm
> oddball:root> mount -t usbfs none /proc/bus/usb
> mount: none already mounted or /proc/bus/usb busy
> mount: according to mtab, none is already mounted on /proc/bus/usb

What does 'cat /proc/mounts' show?

> oddball:root> lc /proc/bus/usb
> oddball:root> l -aR /proc/bus/usb
> /proc/bus/usb:
> total 0
> drwxr-xr-x    2 root            0 Sep  3 13:17 .
> dr-xr-xr-x    6 root            0 Sep  3 13:17 ..

Do you have any USB host controller drivers loaded?  That is necessary
for anything to actually show up in here :)

thanks,

greg k-h

Re: 2.6.0-test 4 and USB

[Sean Neakums]

"Blake B." <shadoi@nanovoid.com> writes:

> Hmm... once I mounted the usbfs, and had the proper modules loaded
> (uhci-usb, etc...) /proc/bus/usb was populated.

"usbdevfs", which is provided by the usbcore module (maybe usb-core)

-- 
Information wants to be left alone.

Re: 2.6.0-test 4 and USB

[Greg KH]

On Thu, Sep 04, 2003 at 01:01:59AM +0100, Sean Neakums wrote:
> "Blake B." <shadoi@nanovoid.com> writes:
> 
> > Hmm... once I mounted the usbfs, and had the proper modules loaded
> > (uhci-usb, etc...) /proc/bus/usb was populated.
> 
> "usbdevfs", which is provided by the usbcore module (maybe usb-core)

"usbfs" == "usbdevfs"

The "usbdevfs" name will be going away in 2.7 so I encourage you to use
"usbfs" starting now (it also works in 2.4.)

thanks,

greg k-h