Bug#590327: linux-image-2.6.32-5-amd64: Unbalanced enable for IRQ 19

[David Miller <davem@davemloft.net>]

From: Ben Hutchings <ben@decadent.org.uk>
Date: Wed, 07 Sep 2011 05:16:01 +0100

> This is somewhat unusual in that the IDE controller will be sharing its
> IRQ, but that's supposed to work.
> 
> However, the IDE core attempts to disable and enable the IRQ *before* it
> allocates it.  If the UHCI driver then allocates the IRQ in the middle
> of this, the IRQ manager will reset the disable count since the IRQ is
> not yet shared!
> 
> This might be fixable by changing the IDE core to allocate the IRQ with
> a dummy interrupt handler while probing.
> 
> Aside from that, maybe pata_it8213 is ready as a replacement for it8213
> now?  (Kconfig still labels it as EXPERIMENTAL.)

I've known about this IDE layer problem for at least a year and any
fix is too risky to consider seriously.

Use the PATA drivers on modern systems, don't use the deprecated IDE
layer.