libata: make ata_pci_init_one() not use ops->irq_handler and pi->sht

ata_pci_init_one() is the only function which uses ops->irq_handler
and pi->sht.  Other initialization functions take the same information
as arguments.  This causes confusion and duplicate unused entries in
structures.

Make ata_pci_init_one() take sht as an argument and use ata_interrupt
implicitly.  All current users use ata_interrupt and if different irq
handler is necessary open coding ata_pci_init_one() using
ata_prepare_sff_host() and ata_activate_sff_host can be done under ten
lines including error handling and driver which requires custom
interrupt handler is likely to require custom initialization anyway.

As ata_pci_init_one() was the last user of ops->irq_handler, this
patch also kills the field.

Signed-off-by: Tejun Heo <htejun@gmail.com>

1 files changed, 1 insertions, 2 deletions

diff --git a/drivers/ata/pata_opti.c b/drivers/ata/pata_opti.c
index c4a0795c3ff4..8601d9c3cb39 100644
--- a/drivers/ata/pata_opti.c
+++ b/drivers/ata/pata_opti.c
@@ -178,7 +178,6 @@ static struct ata_port_operations opti_port_ops = {
 static int opti_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
         static const struct ata_port_info info = {
-                .sht = &opti_sht,
                 .flags = ATA_FLAG_SLAVE_POSS,
                 .pio_mask = 0x1f,
                 .port_ops = &opti_port_ops
@@ -189,7 +188,7 @@ static int opti_init_one(struct pci_dev *dev, const struct pci_device_id *id)
         if (!printed_version++)
                 dev_printk(KERN_DEBUG, &dev->dev, "version " DRV_VERSION "\n");
 
-        return ata_pci_init_one(dev, ppi);
+        return ata_pci_init_one(dev, ppi, &opti_sht);
 }
 
 static const struct pci_device_id opti[] = {