I'm seeing an oddity with floppy:
$ vdir /sys/devices/platform/floppy.0/
total 0
lrwxrwxrwx 1 root root 0 May 21 22:43 block -> ../../../block/fd1
lrwxrwxrwx 1 root root 0 May 21 22:43 block -> ../../../block/fd1
lrwxrwxrwx 1 root root 0 May 21 22:43 bus -> ../../../bus/platform
-rw-r--r-- 1 root root 4096 May 21 22:43 detach_state
I suspect the first is actually supposed to be 'fd0' since:
$ vdir /sys/block/fd*/device
lrwxrwxrwx 1 root root 0 May 21 22:52 /sys/block/fd0/device -> ../../devices/platform/floppy.0
lrwxrwxrwx 1 root root 0 May 21 22:52 /sys/block/fd1/device -> ../../devices/platform/floppy.0
It seems that the block sysfs layer can't cope with one device having
multiple block devices hanging off it, which is the case with floppy
controllers.
Maybe a possible solution would be for the floppy driver to register
platform devices beneath the main device for each floppy drive?
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core
On 5/21/05, Russell King <[email protected]> wrote:
> I'm seeing an oddity with floppy:
>
> $ vdir /sys/devices/platform/floppy.0/
> total 0
> lrwxrwxrwx 1 root root 0 May 21 22:43 block -> ../../../block/fd1
> lrwxrwxrwx 1 root root 0 May 21 22:43 block -> ../../../block/fd1
> lrwxrwxrwx 1 root root 0 May 21 22:43 bus -> ../../../bus/platform
> -rw-r--r-- 1 root root 4096 May 21 22:43 detach_state
>
> I suspect the first is actually supposed to be 'fd0' since:
>
> $ vdir /sys/block/fd*/device
> lrwxrwxrwx 1 root root 0 May 21 22:52 /sys/block/fd0/device -> ../../devices/platform/floppy.0
> lrwxrwxrwx 1 root root 0 May 21 22:52 /sys/block/fd1/device -> ../../devices/platform/floppy.0
>
I just took a look here, and I don't see what you see :
juhl@dragon:~$ uname -a
Linux dragon 2.6.12-rc4-mm2 #2 Mon May 16 18:14:13 CEST 2005 i686
unknown unknown GNU/Linux
juhl@dragon:~$ vdir /sys/devices/platform/floppy.0/
total 0
lrwxrwxrwx 1 root root 0 2005-05-22 17:35 block -> ../../../block/fd0/
lrwxrwxrwx 1 root root 0 2005-05-22 13:02 bus -> ../../../bus/platform/
drwxr-xr-x 2 root root 0 2005-05-22 13:01 power/
juhl@dragon:~$ vdir /sys/block/fd*/device
lrwxrwxrwx 1 root root 0 2005-05-22 13:02 /sys/block/fd0/device ->
../../devices/platform/floppy.0/
juhl@dragon:~$
On Sun, May 22, 2005 at 05:33:55PM +0200, Jesper Juhl wrote:
> On 5/21/05, Russell King <[email protected]> wrote:
> > I'm seeing an oddity with floppy:
> >
> > $ vdir /sys/devices/platform/floppy.0/
> > total 0
> > lrwxrwxrwx 1 root root 0 May 21 22:43 block -> ../../../block/fd1
> > lrwxrwxrwx 1 root root 0 May 21 22:43 block -> ../../../block/fd1
> > lrwxrwxrwx 1 root root 0 May 21 22:43 bus -> ../../../bus/platform
> > -rw-r--r-- 1 root root 4096 May 21 22:43 detach_state
> >
> > I suspect the first is actually supposed to be 'fd0' since:
> >
> > $ vdir /sys/block/fd*/device
> > lrwxrwxrwx 1 root root 0 May 21 22:52 /sys/block/fd0/device -> ../../devices/platform/floppy.0
> > lrwxrwxrwx 1 root root 0 May 21 22:52 /sys/block/fd1/device -> ../../devices/platform/floppy.0
> >
>
> I just took a look here, and I don't see what you see :
That'll be because your system is obviously configured for only one
floppy drive. Configure it for two and see what happens. (Naturally
the BIOS will complain if you don't actually have a second drive.)
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core