[PATCH] mdev doesn't correctly determine whether device is block/char (2.6.25 kernel)

[Lombard, David N]

On Wed, May 14, 2008 at 04:39:11PM +1000, virdiq virdiq wrote:
> I'm having problems with busybox-1.10.2 and the 2.6.25 kernel (with the
> deprecated sysfs structure turned off) where mdev always creates character
> device nodes (when some of them should be block device nodes). I've tried
> the trunk version of busybox as well as busybox 1.10.1 and busybox 1.10.2
> with all current patches... all with no solution to the problem.

FWIW, I'm running 2.6.25 and 1.8.2 and don't have any such problem.

  ~ # ls -l /dev
  crw-------  1 root  0   5,   1 Aug 30 09:51 console
  crw-rw----  1 root  0  10,  63 Aug 30 09:46 cpu_dma_latency
  crw-rw----  1 root  0   1,   7 Aug 30 09:46 full
  crw-rw----  1 root  0   1,   2 Aug 30 09:46 kmem
  crw-rw----  1 root  0   1,  11 Aug 30 09:46 kmsg
  crw-rw----  1 root  0   1,   1 Aug 30 09:46 mem
  crw-rw----  1 root  0  10,  62 Aug 30 09:46 network_latency
  crw-rw----  1 root  0  10,  61 Aug 30 09:46 network_throughput
  crw-------  1 root  0   1,   3 Aug 30 09:46 null
  crw-rw----  1 root  0  10, 144 Aug 30 09:46 nvram
  crw-rw----  1 root  0   1,   4 Aug 30 09:46 port
  crw-rw----  1 root  0   5,   2 Aug 30 09:46 ptmx
  drwxr-xr-x  2 root  0   0 Aug 30 09:46 pts
  crw-rw----  1 root  0   1,   8 Aug 30 09:46 random
  crw-rw----  1 root  0  10, 135 Aug 30 09:46 rtc
  brw-rw----  1 root  0   8,   0 Aug 30 09:46 sda
  brw-rw----  1 root  0   8,   1 Aug 30 09:46 sda1
  brw-rw----  1 root  0   8,   2 Aug 30 09:46 sda2
  crw-rw----  1 root  0   5,   0 Aug 30 09:46 tty
  crw-rw----  1 root  0   4,  64 Aug 30 09:46 ttyS0
  crw-rw----  1 root  0   4,  65 Aug 30 09:46 ttyS1
  crw-rw----  1 root  0   1,   9 Aug 30 09:46 urandom
  crw-rw----  1 root  0   1,   5 Aug 30 09:46 zero
  ~ # 

Only /dev/null and /dev/pts/ were on the initrd (created via the
kernel's scripts/gen_initramfs_list.sh and usr/gen_init_cpio).

The usual mdev start was used:

  echo /sbin/mdev > /proc/sys/kernel/hotplug
  /sbin/mdev -s

-- 
David N. Lombard, Intel, Irvine, CA
I do not speak for Intel Corporation; all comments are strictly my own.