[Bug 48087] RT61 driver hangs net, if interface accessed while down

[Peter Parkkali]

Public bug reported:

Binary package hint: linux-source-2.6.15

The "rt61" driver for Ralink's RT2600 chipset  has a bug where it'll jam
all (future) processes using the network, like i[wf]config, umount, etc.
and refuse to be unloaded. Eventually it's necessary to power-cycle the
machine because some shutdown script(s) will hang.

This bug is triggered if one tries to set or even read the interfaces'
status while the i/f is in down. Running:

  modprobe rt61
  # link is now *not* set "up"
  # list wireless interfaces:
  iwconfig

after inserting the (PCMCIA) card is enough to demonstrate this.

To work around it's currently necessary to run "ip link set ra0 up"
before *any* command that touches the interface.

My wifi card is a PC Card, D-Link DWL-G630, P/N EWLG630EU.E1, H/W ver.
E1, F/W ver. 5.00

** Affects: linux-source-2.6.15 (Ubuntu)
       Severity: Normal
       Priority: (none set)
         Status: Unconfirmed

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RT61 driver hangs net, if interface accessed while down
https://launchpad.net/bugs/48087