[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, 5 insertions, 8 deletions

diff --git a/drivers/ata/pata_triflex.c b/drivers/ata/pata_triflex.c
index 36f788728f3f..95adf92901fc 100644
--- a/drivers/ata/pata_triflex.c
+++ b/drivers/ata/pata_triflex.c
@@ -46,13 +46,13 @@
 #define DRV_VERSION "0.2.5"
 
 /**
- *      triflex_probe_init              -       probe begin
+ *      triflex_prereset                -       probe begin
  *      @ap: ATA port
  *
  *      Set up cable type and use generic probe init
  */
 
-static int triflex_probe_init(struct ata_port *ap)
+static int triflex_prereset(struct ata_port *ap)
 {
         static const struct pci_bits triflex_enable_bits[] = {
                 { 0x80, 1, 0x01, 0x01 },
@@ -61,11 +61,8 @@ static int triflex_probe_init(struct ata_port *ap)
 
         struct pci_dev *pdev = to_pci_dev(ap->host->dev);
 
-        if (!pci_test_config_bits(pdev, &triflex_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, &triflex_enable_bits[ap->port_no]))
+                return -ENOENT;
         ap->cbl = ATA_CBL_PATA40;
         return ata_std_prereset(ap);
 }
@@ -74,7 +71,7 @@ static int triflex_probe_init(struct ata_port *ap)
 
 static void triflex_error_handler(struct ata_port *ap)
 {
-        ata_bmdma_drive_eh(ap, triflex_probe_init, ata_std_softreset, NULL, ata_std_postreset);
+        ata_bmdma_drive_eh(ap, triflex_prereset, ata_std_softreset, NULL, ata_std_postreset);
 }
 
 /**