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>
diff --git a/drivers/ata/libata-core.c b/drivers/ata/libata-core.c
index 423c0a6..5096b2a 100644
--- a/drivers/ata/libata-core.c
+++ b/drivers/ata/libata-core.c
@@ -5480,7 +5480,7 @@
if (!ap)
return NULL;
- ap->pflags |= ATA_PFLAG_INITIALIZING;
+ ap->pflags |= ATA_PFLAG_INITIALIZING | ATA_PFLAG_FROZEN;
ap->lock = &host->lock;
ap->print_id = -1;
ap->host = host;