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, 5 deletions

diff --git a/drivers/ata/pata_serverworks.c b/drivers/ata/pata_serverworks.c
index 627abcf85c6e..515b5b70a555 100644
--- a/drivers/ata/pata_serverworks.c
+++ b/drivers/ata/pata_serverworks.c
@@ -399,28 +399,24 @@ static int serverworks_init_one(struct pci_dev *pdev, const struct pci_device_id
 {
         static const struct ata_port_info info[4] = {
                 { /* OSB4 */
-                        .sht = &serverworks_sht,
                         .flags = ATA_FLAG_SLAVE_POSS,
                         .pio_mask = 0x1f,
                         .mwdma_mask = 0x07,
                         .udma_mask = 0x07,
                         .port_ops = &serverworks_osb4_port_ops
                 }, { /* OSB4 no UDMA */
-                        .sht = &serverworks_sht,
                         .flags = ATA_FLAG_SLAVE_POSS,
                         .pio_mask = 0x1f,
                         .mwdma_mask = 0x07,
                         .udma_mask = 0x00,
                         .port_ops = &serverworks_osb4_port_ops
                 }, { /* CSB5 */
-                        .sht = &serverworks_sht,
                         .flags = ATA_FLAG_SLAVE_POSS,
                         .pio_mask = 0x1f,
                         .mwdma_mask = 0x07,
                         .udma_mask = ATA_UDMA4,
                         .port_ops = &serverworks_csb_port_ops
                 }, { /* CSB5 - later revisions*/
-                        .sht = &serverworks_sht,
                         .flags = ATA_FLAG_SLAVE_POSS,
                         .pio_mask = 0x1f,
                         .mwdma_mask = 0x07,
@@ -465,7 +461,7 @@ static int serverworks_init_one(struct pci_dev *pdev, const struct pci_device_id
         if (pdev->device == PCI_DEVICE_ID_SERVERWORKS_CSB5IDE)
                 ata_pci_clear_simplex(pdev);
 
-        return ata_pci_init_one(pdev, ppi);
+        return ata_pci_init_one(pdev, ppi, &serverworks_sht);
 }
 
 #ifdef CONFIG_PM