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Date: Thu, 21 Feb 2008 21:21:03 +0100
From: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
To: linux-ide@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
Sergei Shtylyov <sshtylyov@...mvista.com>
Subject: [PATCH] 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@...mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>
---
This patch goes before "ide: add warm-plug support for IDE devices" in
the IDE quilt tree.
drivers/ide/ide.c | 3 --
drivers/ide/pci/hpt366.c | 59 ---------------------------------------------
drivers/ide/pci/sgiioc4.c | 1
drivers/ide/pci/siimage.c | 43 --------------------------------
drivers/ide/pci/tc86c001.c | 36 ---------------------------
include/linux/ide.h | 2 -
6 files changed, 144 deletions(-)
Index: b/drivers/ide/ide.c
===================================================================
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -418,7 +418,6 @@ static void ide_hwif_restore(ide_hwif_t
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;
@@ -1083,8 +1082,6 @@ int generic_ide_ioctl(ide_drive_t *drive
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;
Index: b/drivers/ide/pci/hpt366.c
===================================================================
--- a/drivers/ide/pci/hpt366.c
+++ b/drivers/ide/pci/hpt366.c
@@ -929,64 +929,6 @@ static void hpt3xxn_rw_disk(ide_drive_t
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(i
hwif->quirkproc = &hpt3xx_quirkproc;
hwif->maskproc = &hpt3xx_maskproc;
- hwif->busproc = &hpt3xx_busproc;
hwif->udma_filter = &hpt3xx_udma_filter;
hwif->mdma_filter = &hpt3xx_mdma_filter;
Index: b/drivers/ide/pci/sgiioc4.c
===================================================================
--- 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;
Index: b/drivers/ide/pci/siimage.c
===================================================================
--- a/drivers/ide/pci/siimage.c
+++ b/drivers/ide/pci/siimage.c
@@ -370,48 +370,6 @@ static int siimage_mmio_ide_dma_test_irq
}
/**
- * 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(
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;
Index: b/drivers/ide/pci/tc86c001.c
===================================================================
--- a/drivers/ide/pci/tc86c001.c
+++ b/drivers/ide/pci/tc86c001.c
@@ -126,40 +126,6 @@ static void tc86c001_dma_start(ide_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
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)
Index: b/include/linux/ide.h
===================================================================
--- 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 *);
--
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