ide: remove dead/obsolete ->busproc method

->busproc method is used by HDIO_SET_BUSSTATE ioctl but it has no chance
of working as intended (in 2.4.x days) because to issue an ioctl there
is a device node needed and:

- for BUSSTATE_TRISTATE+OFF it is too late (devices are already gone)

- for BUSSTATE_TRISTATE+ON it is too early (devices are not registered yet)

Just remove ->busproc method for now (it was only implemented by hpt366,
siimage and tc86c001 host drivers).

Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

6 files changed, 0 insertions, 144 deletions

diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index a8b5b08dd6e2..cb18ba8de22d 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -414,7 +414,6 @@ static void ide_hwif_restore(ide_hwif_t *hwif, ide_hwif_t *tmp_hwif)
         hwif->resetproc                 = tmp_hwif->resetproc;
         hwif->maskproc                  = tmp_hwif->maskproc;
         hwif->quirkproc                 = tmp_hwif->quirkproc;
-        hwif->busproc                   = tmp_hwif->busproc;
 
         hwif->ata_input_data            = tmp_hwif->ata_input_data;
         hwif->ata_output_data           = tmp_hwif->ata_output_data;
@@ -1071,8 +1070,6 @@ int generic_ide_ioctl(ide_drive_t *drive, struct file *file, struct block_device
                 case HDIO_SET_BUSSTATE:
                         if (!capable(CAP_SYS_ADMIN))
                                 return -EACCES;
-                        if (HWIF(drive)->busproc)
-                                return HWIF(drive)->busproc(drive, (int)arg);
                         return -EOPNOTSUPP;
                 default:
                         return -EINVAL;
diff --git a/drivers/ide/pci/hpt366.c b/drivers/ide/pci/hpt366.c
index 6357bb6269ab..d03a231d965e 100644
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -929,64 +929,6 @@ static void hpt3xxn_rw_disk(ide_drive_t *drive, struct request *rq)
         hpt3xxn_set_clock(HWIF(drive), rq_data_dir(rq) ? 0x23 : 0x21);
 }
 
-/* 
- * Set/get power state for a drive.
- * NOTE: affects both drives on each channel.
- *
- * When we turn the power back on, we need to re-initialize things.
- */
-#define TRISTATE_BIT  0x8000
-
-static int hpt3xx_busproc(ide_drive_t *drive, int state)
-{
-        ide_hwif_t *hwif        = HWIF(drive);
-        struct pci_dev *dev     = to_pci_dev(hwif->dev);
-        u8  mcr_addr            = hwif->select_data + 2;
-        u8  resetmask           = hwif->channel ? 0x80 : 0x40;
-        u8  bsr2                = 0;
-        u16 mcr                 = 0;
-
-        hwif->bus_state = state;
-
-        /* Grab the status. */
-        pci_read_config_word(dev, mcr_addr, &mcr);
-        pci_read_config_byte(dev, 0x59, &bsr2);
-
-        /*
-         * Set the state. We don't set it if we don't need to do so.
-         * Make sure that the drive knows that it has failed if it's off.
-         */
-        switch (state) {
-        case BUSSTATE_ON:
-                if (!(bsr2 & resetmask))
-                        return 0;
-                hwif->drives[0].failures = hwif->drives[1].failures = 0;
-
-                pci_write_config_byte(dev, 0x59, bsr2 & ~resetmask);
-                pci_write_config_word(dev, mcr_addr, mcr & ~TRISTATE_BIT);
-                return 0;
-        case BUSSTATE_OFF:
-                if ((bsr2 & resetmask) && !(mcr & TRISTATE_BIT))
-                        return 0;
-                mcr &= ~TRISTATE_BIT;
-                break;
-        case BUSSTATE_TRISTATE:
-                if ((bsr2 & resetmask) &&  (mcr & TRISTATE_BIT))
-                        return 0;
-                mcr |= TRISTATE_BIT;
-                break;
-        default:
-                return -EINVAL;
-        }
-
-        hwif->drives[0].failures = hwif->drives[0].max_failures + 1;
-        hwif->drives[1].failures = hwif->drives[1].max_failures + 1;
-
-        pci_write_config_word(dev, mcr_addr, mcr);
-        pci_write_config_byte(dev, 0x59, bsr2 | resetmask);
-        return 0;
-}
-
 /**
  *      hpt37x_calibrate_dpll   -       calibrate the DPLL
  *      @dev: PCI device
@@ -1334,7 +1276,6 @@ static void __devinit init_hwif_hpt366(ide_hwif_t *hwif)
 
         hwif->quirkproc         = &hpt3xx_quirkproc;
         hwif->maskproc          = &hpt3xx_maskproc;
-        hwif->busproc           = &hpt3xx_busproc;
 
         hwif->udma_filter       = &hpt3xx_udma_filter;
         hwif->mdma_filter       = &hpt3xx_mdma_filter;
diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c
index 054626497be4..9046a69117ff 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -562,7 +562,6 @@ ide_init_sgiioc4(ide_hwif_t * hwif)
                                                 clear interrupts */
         hwif->maskproc = &sgiioc4_maskproc;     /* Mask on/off NIEN register */
         hwif->quirkproc = NULL;
-        hwif->busproc = NULL;
 
         hwif->INB = &sgiioc4_INB;
 
diff --git a/drivers/ide/pci/siimage.c b/drivers/ide/pci/siimage.c
index 8d624afe8529..b6be1b45f329 100644
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -370,48 +370,6 @@ static int siimage_mmio_ide_dma_test_irq (ide_drive_t *drive)
 }
 
 /**
- *      sil_sata_busproc        -       bus isolation IOCTL
- *      @drive: drive to isolate/restore
- *      @state: bus state to set
- *
- *      Used by the SII3112 to handle bus isolation. As this is a 
- *      SATA controller the work required is quite limited, we 
- *      just have to clean up the statistics
- */
-
-static int sil_sata_busproc(ide_drive_t * drive, int state)
-{
-        ide_hwif_t *hwif        = HWIF(drive);
-        struct pci_dev *dev     = to_pci_dev(hwif->dev);
-        u32 stat_config         = 0;
-        unsigned long addr      = siimage_selreg(hwif, 0);
-
-        if (hwif->mmio)
-                stat_config = readl((void __iomem *)addr);
-        else
-                pci_read_config_dword(dev, addr, &stat_config);
-
-        switch (state) {
-                case BUSSTATE_ON:
-                        hwif->drives[0].failures = 0;
-                        hwif->drives[1].failures = 0;
-                        break;
-                case BUSSTATE_OFF:
-                        hwif->drives[0].failures = hwif->drives[0].max_failures + 1;
-                        hwif->drives[1].failures = hwif->drives[1].max_failures + 1;
-                        break;
-                case BUSSTATE_TRISTATE:
-                        hwif->drives[0].failures = hwif->drives[0].max_failures + 1;
-                        hwif->drives[1].failures = hwif->drives[1].max_failures + 1;
-                        break;
-                default:
-                        return -EINVAL;
-        }
-        hwif->bus_state = state;
-        return 0;
-}
-
-/**
  *      sil_sata_reset_poll     -       wait for SATA reset
  *      @drive: drive we are resetting
  *
@@ -818,7 +776,6 @@ static void __devinit init_hwif_siimage(ide_hwif_t *hwif)
         if (sata) {
                 static int first = 1;
 
-                hwif->busproc = &sil_sata_busproc;
                 hwif->reset_poll = &sil_sata_reset_poll;
                 hwif->pre_reset = &sil_sata_pre_reset;
                 hwif->udma_filter = &sil_sata_udma_filter;
diff --git a/drivers/ide/pci/tc86c001.c b/drivers/ide/pci/tc86c001.c
index 2ef2ed2f2b32..1e4a6262bcef 100644
--- a/drivers/ide/pci/tc86c001.c
+++ b/drivers/ide/pci/tc86c001.c
@@ -126,40 +126,6 @@ static void tc86c001_dma_start(ide_drive_t *drive)
         ide_dma_start(drive);
 }
 
-static int tc86c001_busproc(ide_drive_t *drive, int state)
-{
-        ide_hwif_t *hwif        = HWIF(drive);
-        unsigned long sc_base   = hwif->config_data;
-        u16 scr1;
-
-        /* System Control 1 Register bit 11 (ATA Hard Reset) read */
-        scr1 = inw(sc_base + 0x00);
-
-        switch (state) {
-                case BUSSTATE_ON:
-                        if (!(scr1 & 0x0800))
-                                return 0;
-                        scr1 &= ~0x0800;
-
-                        hwif->drives[0].failures = hwif->drives[1].failures = 0;
-                        break;
-                case BUSSTATE_OFF:
-                        if (scr1 & 0x0800)
-                                return 0;
-                        scr1 |= 0x0800;
-
-                        hwif->drives[0].failures = hwif->drives[0].max_failures + 1;
-                        hwif->drives[1].failures = hwif->drives[1].max_failures + 1;
-                        break;
-                default:
-                        return -EINVAL;
-        }
-
-        /* System Control 1 Register bit 11 (ATA Hard Reset) write */
-        outw(scr1, sc_base + 0x00);
-        return 0;
-}
-
 static u8 __devinit tc86c001_cable_detect(ide_hwif_t *hwif)
 {
         struct pci_dev *dev = to_pci_dev(hwif->dev);
@@ -194,8 +160,6 @@ static void __devinit init_hwif_tc86c001(ide_hwif_t *hwif)
         hwif->set_pio_mode = &tc86c001_set_pio_mode;
         hwif->set_dma_mode = &tc86c001_set_mode;
 
-        hwif->busproc   = &tc86c001_busproc;
-
         hwif->cable_detect = tc86c001_cable_detect;
 
         if (!hwif->dma_base)
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 9aaad7e70593..e43570a19200 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -502,8 +502,6 @@ typedef struct hwif_s {
         void    (*maskproc)(ide_drive_t *, int);
         /* check host's drive quirk list */
         void    (*quirkproc)(ide_drive_t *);
-        /* driver soft-power interface */
-        int     (*busproc)(ide_drive_t *, int);
 #endif
         u8 (*mdma_filter)(ide_drive_t *);
         u8 (*udma_filter)(ide_drive_t *);