tree 70f8947025d38ad64026b1d00986655ff3c3606f
parent 7b8712e563df4fefc25d3107fa3fb3abb7331ff4
author Kay Sievers <kay.sievers@vrfy.org> 1193944852 +0100
committer Greg Kroah-Hartman <gregkh@suse.de> 1201236008 -0800

sysfs: create optimal relative symlink targets

Instead of walking from the source down to the root of sysfs, and back
to the target, we stop at the first directory the source and the target
share.

This link:
  /devices/pci0000:00/0000:00:1d.7/usb1/1-0:1.0/ep_81

pointed to:
  ../../../../../devices/pci0000:00/0000:00:1d.0/usb2/2-0:1.0/usb_endpoint/usbdev2.1_ep81

now it just points to:
  usb_endpoint/usbdev1.1_ep81

Thanks to Denis Cheng for bringing this up, and sending the initial patch.

CC: Denis Cheng <crquan@gmail.com>
Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>