[PATCH] libata-eh: Remove layering violation and duplication when handling absent ports

This removes the layering violation where drivers have to fiddle
directly with EH flags. Instead we now recognize -ENOENT means "no port"
and do the handling in the core code.

This also removes an instance of a call to disable the port, and an
identical printk from each driver doing this. Even better - future rule
changes will be in one place only.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>

1 files changed, 2 insertions, 5 deletions

diff --git a/drivers/ata/pata_ns87410.c b/drivers/ata/pata_ns87410.c
index 93d6646d295..f529fe4c29b 100644
--- a/drivers/ata/pata_ns87410.c
+++ b/drivers/ata/pata_ns87410.c
@@ -45,11 +45,8 @@ static int ns87410_pre_reset(struct ata_port *ap)
                 { 0x47, 1, 0x08, 0x08 }
         };
 
-        if (!pci_test_config_bits(pdev, &ns87410_enable_bits[ap->port_no])) {
-                ata_port_disable(ap);
-                printk(KERN_INFO "ata%u: port disabled. ignoring.\n", ap->id);
-                return 0;
-        }
+        if (!pci_test_config_bits(pdev, &ns87410_enable_bits[ap->port_no]))
+                return -ENOENT;
         ap->cbl = ATA_CBL_PATA40;
         return ata_std_prereset(ap);
 }