From: Maxime Bizon <mbizon@freebox.fr>
Date: Wed, 16 Mar 2011 13:58:32 +0000 (+0100)
Subject: ahci: don't enable port irq before handler is registered
X-Git-Tag: v2.6.39-rc5~14^2~6
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7b3a24c57d2eeda8dba9c205342b12689c4679f9;p=pandora-kernel.git

ahci: don't enable port irq before handler is registered

The ahci_pmp_attach() & ahci_pmp_detach() unmask port irqs, but they
are also called during port initialization, before ahci host irq
handler is registered. On ce4100 platform, this sometimes triggers
"irq 4: nobody cared" message when loading driver.

Fixed this by not touching the register if the port is in frozen
state, and mark all uninitialized port as frozen.

Signed-off-by: Maxime Bizon <mbizon@freebox.fr>
Acked-by: Tejun Heo <tj@kernel.org>
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
---

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