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, 8 deletions

diff --git a/drivers/ata/pata_ali.c b/drivers/ata/pata_ali.c
index b00a9cf72c31..f2924996f6e3 100644
--- a/drivers/ata/pata_ali.c
+++ b/drivers/ata/pata_ali.c
@@ -463,14 +463,12 @@ static void ali_init_chipset(struct pci_dev *pdev)
 static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
 {
         static const struct ata_port_info info_early = {
-                .sht = &ali_sht,
                 .flags = ATA_FLAG_SLAVE_POSS,
                 .pio_mask = 0x1f,
                 .port_ops = &ali_early_port_ops
         };
         /* Revision 0x20 added DMA */
         static const struct ata_port_info info_20 = {
-                .sht = &ali_sht,
                 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
                 .pio_mask = 0x1f,
                 .mwdma_mask = 0x07,
@@ -478,7 +476,6 @@ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
         };
         /* Revision 0x20 with support logic added UDMA */
         static const struct ata_port_info info_20_udma = {
-                .sht = &ali_sht,
                 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
                 .pio_mask = 0x1f,
                 .mwdma_mask = 0x07,
@@ -487,7 +484,6 @@ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
         };
         /* Revision 0xC2 adds UDMA66 */
         static const struct ata_port_info info_c2 = {
-                .sht = &ali_sht,
                 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
                 .pio_mask = 0x1f,
                 .mwdma_mask = 0x07,
@@ -496,7 +492,6 @@ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
         };
         /* Revision 0xC3 is UDMA66 for now */
         static const struct ata_port_info info_c3 = {
-                .sht = &ali_sht,
                 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
                 .pio_mask = 0x1f,
                 .mwdma_mask = 0x07,
@@ -505,7 +500,6 @@ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
         };
         /* Revision 0xC4 is UDMA100 */
         static const struct ata_port_info info_c4 = {
-                .sht = &ali_sht,
                 .flags = ATA_FLAG_SLAVE_POSS | ATA_FLAG_PIO_LBA48,
                 .pio_mask = 0x1f,
                 .mwdma_mask = 0x07,
@@ -514,7 +508,6 @@ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
         };
         /* Revision 0xC5 is UDMA133 with LBA48 DMA */
         static const struct ata_port_info info_c5 = {
-                .sht = &ali_sht,
                 .flags = ATA_FLAG_SLAVE_POSS,
                 .pio_mask = 0x1f,
                 .mwdma_mask = 0x07,
@@ -559,7 +552,7 @@ static int ali_init_one(struct pci_dev *pdev, const struct pci_device_id *id)
                         ppi[0] = &info_20_udma;
                 pci_dev_put(isa_bridge);
         }
-        return ata_pci_init_one(pdev, ppi);
+        return ata_pci_init_one(pdev, ppi, &ali_sht);
 }
 
 #ifdef CONFIG_PM