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, 4 deletions

diff --git a/drivers/ata/pata_pdc202xx_old.c b/drivers/ata/pata_pdc202xx_old.c
index 4daac20df0bc..5545fbab6a7e 100644
--- a/drivers/ata/pata_pdc202xx_old.c
+++ b/drivers/ata/pata_pdc202xx_old.c
@@ -290,7 +290,6 @@ static int pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id
 {
         static const struct ata_port_info info[3] = {
                 {
-                        .sht = &pdc202xx_sht,
                         .flags = ATA_FLAG_SLAVE_POSS,
                         .pio_mask = 0x1f,
                         .mwdma_mask = 0x07,
@@ -298,7 +297,6 @@ static int pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id
                         .port_ops = &pdc2024x_port_ops
                 },
                 {
-                        .sht = &pdc202xx_sht,
                         .flags = ATA_FLAG_SLAVE_POSS,
                         .pio_mask = 0x1f,
                         .mwdma_mask = 0x07,
@@ -306,7 +304,6 @@ static int pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id
                         .port_ops = &pdc2026x_port_ops
                 },
                 {
-                        .sht = &pdc202xx_sht,
                         .flags = ATA_FLAG_SLAVE_POSS,
                         .pio_mask = 0x1f,
                         .mwdma_mask = 0x07,
@@ -327,7 +324,7 @@ static int pdc202xx_init_one(struct pci_dev *dev, const struct pci_device_id *id
                                 return -ENODEV;
                 }
         }
-        return ata_pci_init_one(dev, ppi);
+        return ata_pci_init_one(dev, ppi, &pdc202xx_sht);
 }
 
 static const struct pci_device_id pdc202xx[] = {