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Subject[PATCH 07/18] ide: add ->read_status method
* Remove ide_read_status() inline helper.

* Add ->read_status method for reading ATA Status register
and use it instead of ->INB.

While at it:

* Don't use HWGROUP() macro.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/arm/icside.c | 4 +++-
drivers/ide/ide-atapi.c | 2 +-
drivers/ide/ide-cd.c | 12 ++++++++----
drivers/ide/ide-dma.c | 5 +++--
drivers/ide/ide-floppy.c | 3 ++-
drivers/ide/ide-io.c | 19 ++++++++++---------
drivers/ide/ide-iops.c | 33 ++++++++++++++++++++++-----------
drivers/ide/ide-probe.c | 22 +++++++++++-----------
drivers/ide/ide-tape.c | 6 ++++--
drivers/ide/ide-taskfile.c | 23 ++++++++++++++---------
drivers/ide/pci/ns87415.c | 8 +++++++-
drivers/ide/pci/scc_pata.c | 6 ++++++
drivers/ide/pci/sgiioc4.c | 19 ++++++++++---------
drivers/scsi/ide-scsi.c | 2 +-
include/linux/ide.h | 8 +-------
15 files changed, 103 insertions(+), 69 deletions(-)

Index: b/drivers/ide/arm/icside.c
===================================================================
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -375,12 +375,14 @@ static int icside_dma_test_irq(ide_drive

static void icside_dma_timeout(ide_drive_t *drive)
{
+ ide_hwif_t *hwif = drive->hwif;
+
printk(KERN_ERR "%s: DMA timeout occurred: ", drive->name);

if (icside_dma_test_irq(drive))
return;

- ide_dump_status(drive, "DMA timeout", ide_read_status(drive));
+ ide_dump_status(drive, "DMA timeout", hwif->read_status(hwif));

icside_dma_end(drive);
}
Index: b/drivers/ide/ide-atapi.c
===================================================================
--- a/drivers/ide/ide-atapi.c
+++ b/drivers/ide/ide-atapi.c
@@ -35,7 +35,7 @@ ide_startstop_t ide_pc_intr(ide_drive_t
}

/* Clear the interrupt */
- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (pc->flags & PC_FLAG_DMA_IN_PROGRESS) {
if (hwif->dma_ops->dma_end(drive) ||
Index: b/drivers/ide/ide-cd.c
===================================================================
--- a/drivers/ide/ide-cd.c
+++ b/drivers/ide/ide-cd.c
@@ -280,11 +280,12 @@ static void ide_dump_status_no_sense(ide
*/
static int cdrom_decode_status(ide_drive_t *drive, int good_stat, int *stat_ret)
{
- struct request *rq = HWGROUP(drive)->rq;
+ ide_hwif_t *hwif = drive->hwif;
+ struct request *rq = hwif->hwgroup->rq;
int stat, err, sense_key;

/* check for errors */
- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (stat_ret)
*stat_ret = stat;
@@ -606,6 +607,8 @@ static ide_startstop_t cdrom_transfer_pa
static int ide_cd_check_ireason(ide_drive_t *drive, struct request *rq,
int len, int ireason, int rw)
{
+ ide_hwif_t *hwif = drive->hwif;
+
/*
* ireason == 0: the drive wants to receive data from us
* ireason == 2: the drive is expecting to transfer data to us
@@ -624,7 +627,7 @@ static int ide_cd_check_ireason(ide_driv
* Some drives (ASUS) seem to tell us that status info is
* available. Just get it and ignore.
*/
- (void)ide_read_status(drive);
+ (void)hwif->read_status(hwif);
return 0;
} else {
/* drive wants a command packet, or invalid ireason... */
@@ -1188,8 +1191,9 @@ static ide_startstop_t ide_cd_do_request

if (blk_fs_request(rq)) {
if (info->cd_flags & IDE_CD_FLAG_SEEKING) {
+ ide_hwif_t *hwif = drive->hwif;
unsigned long elapsed = jiffies - info->start_seek;
- int stat = ide_read_status(drive);
+ int stat = hwif->read_status(hwif);

if ((stat & SEEK_STAT) != SEEK_STAT) {
if (elapsed < IDECD_SEEK_TIMEOUT) {
Index: b/drivers/ide/ide-dma.c
===================================================================
--- a/drivers/ide/ide-dma.c
+++ b/drivers/ide/ide-dma.c
@@ -100,10 +100,11 @@ static const struct drive_list_entry dri

ide_startstop_t ide_dma_intr (ide_drive_t *drive)
{
+ ide_hwif_t *hwif = drive->hwif;
u8 stat = 0, dma_stat = 0;

- dma_stat = drive->hwif->dma_ops->dma_end(drive);
- stat = ide_read_status(drive);
+ dma_stat = hwif->dma_ops->dma_end(drive);
+ stat = hwif->read_status(hwif);

if (OK_STAT(stat,DRIVE_READY,drive->bad_wstat|DRQ_STAT)) {
if (!dma_stat) {
Index: b/drivers/ide/ide-floppy.c
===================================================================
--- a/drivers/ide/ide-floppy.c
+++ b/drivers/ide/ide-floppy.c
@@ -949,11 +949,12 @@ static int idefloppy_get_format_progress

/* Else assume format_unit has finished, and we're at 0x10000 */
} else {
+ ide_hwif_t *hwif = drive->hwif;
unsigned long flags;
u8 stat;

local_irq_save(flags);
- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);
local_irq_restore(flags);

progress_indication = ((stat & SEEK_STAT) == 0) ? 0 : 0x10000;
Index: b/drivers/ide/ide-io.c
===================================================================
--- a/drivers/ide/ide-io.c
+++ b/drivers/ide/ide-io.c
@@ -381,8 +381,7 @@ static ide_startstop_t ide_ata_error(ide
if (err == ABRT_ERR) {
if (drive->select.b.lba &&
/* some newer drives don't support WIN_SPECIFY */
- hwif->INB(hwif->io_ports.command_addr) ==
- WIN_SPECIFY)
+ hwif->read_status(hwif) == WIN_SPECIFY)
return ide_stopped;
} else if ((err & BAD_CRC) == BAD_CRC) {
/* UDMA crc error, just retry the operation */
@@ -408,7 +407,7 @@ static ide_startstop_t ide_ata_error(ide
return ide_stopped;
}

- if (ide_read_status(drive) & (BUSY_STAT | DRQ_STAT))
+ if (hwif->read_status(hwif) & (BUSY_STAT | DRQ_STAT))
rq->errors |= ERROR_RESET;

if ((rq->errors & ERROR_RESET) == ERROR_RESET) {
@@ -435,7 +434,7 @@ static ide_startstop_t ide_atapi_error(i
/* add decoding error stuff */
}

- if (ide_read_status(drive) & (BUSY_STAT | DRQ_STAT))
+ if (hwif->read_status(hwif) & (BUSY_STAT | DRQ_STAT))
/* force an abort */
hwif->exec_command(hwif, WIN_IDLEIMMEDIATE);

@@ -760,7 +759,8 @@ static ide_startstop_t execute_drive_cmd
#ifdef DEBUG
printk("%s: DRIVE_CMD (null)\n", drive->name);
#endif
- ide_end_drive_cmd(drive, ide_read_status(drive), ide_read_error(drive));
+ ide_end_drive_cmd(drive, hwif->read_status(hwif),
+ ide_read_error(drive));

return ide_stopped;
}
@@ -1169,7 +1169,7 @@ static ide_startstop_t ide_dma_timeout_r
printk(KERN_WARNING "%s: DMA timeout error\n", drive->name);
(void)hwif->dma_ops->dma_end(drive);
ret = ide_error(drive, "dma timeout error",
- ide_read_status(drive));
+ hwif->read_status(hwif));
} else {
printk(KERN_WARNING "%s: DMA timeout retry\n", drive->name);
hwif->dma_ops->dma_timeout(drive);
@@ -1294,7 +1294,7 @@ void ide_timer_expiry (unsigned long dat
} else
startstop =
ide_error(drive, "irq timeout",
- ide_read_status(drive));
+ hwif->read_status(hwif));
}
drive->service_time = jiffies - drive->service_start;
spin_lock_irq(&ide_lock);
@@ -1350,7 +1350,8 @@ static void unexpected_intr (int irq, id
*/
do {
if (hwif->irq == irq) {
- stat = hwif->INB(hwif->io_ports.status_addr);
+ stat = hwif->read_status(hwif);
+
if (!OK_STAT(stat, READY_STAT, BAD_STAT)) {
/* Try to not flood the console with msgs */
static unsigned long last_msgtime, count;
@@ -1440,7 +1441,7 @@ irqreturn_t ide_intr (int irq, void *dev
* Whack the status register, just in case
* we have a leftover pending IRQ.
*/
- (void) hwif->INB(hwif->io_ports.status_addr);
+ (void)hwif->read_status(hwif);
#endif /* CONFIG_BLK_DEV_IDEPCI */
}
spin_unlock_irqrestore(&ide_lock, flags);
Index: b/drivers/ide/ide-iops.c
===================================================================
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -111,6 +111,14 @@ static void ide_exec_command(ide_hwif_t
outb(cmd, hwif->io_ports.command_addr);
}

+static u8 ide_read_status(ide_hwif_t *hwif)
+{
+ if (hwif->host_flags & IDE_HFLAG_MMIO)
+ return readb((void __iomem *)hwif->io_ports.status_addr);
+ else
+ return inb(hwif->io_ports.status_addr);
+}
+
static u8 ide_read_sff_dma_status(ide_hwif_t *hwif)
{
if (hwif->host_flags & IDE_HFLAG_MMIO)
@@ -340,6 +348,7 @@ static void ata_output_data(ide_drive_t
void default_hwif_transport(ide_hwif_t *hwif)
{
hwif->exec_command = ide_exec_command;
+ hwif->read_status = ide_read_status;
hwif->read_sff_dma_status = ide_read_sff_dma_status;

hwif->tf_load = ide_tf_load;
@@ -505,7 +514,7 @@ int drive_is_ready (ide_drive_t *drive)
stat = ide_read_altstatus(drive);
else
/* Note: this may clear a pending IRQ!! */
- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (stat & BUSY_STAT)
/* drive busy: definitely not interrupting */
@@ -530,24 +539,25 @@ EXPORT_SYMBOL(drive_is_ready);
*/
static int __ide_wait_stat(ide_drive_t *drive, u8 good, u8 bad, unsigned long timeout, u8 *rstat)
{
+ ide_hwif_t *hwif = drive->hwif;
unsigned long flags;
int i;
u8 stat;

udelay(1); /* spec allows drive 400ns to assert "BUSY" */
- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (stat & BUSY_STAT) {
local_irq_set(flags);
timeout += jiffies;
- while ((stat = ide_read_status(drive)) & BUSY_STAT) {
+ while ((stat = hwif->read_status(hwif)) & BUSY_STAT) {
if (time_after(jiffies, timeout)) {
/*
* One last read after the timeout in case
* heavy interrupt load made us not make any
* progress during the timeout..
*/
- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);
if (!(stat & BUSY_STAT))
break;

@@ -567,7 +577,7 @@ static int __ide_wait_stat(ide_drive_t *
*/
for (i = 0; i < 10; i++) {
udelay(1);
- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (OK_STAT(stat, good, bad)) {
*rstat = stat;
@@ -718,7 +728,7 @@ int ide_driveid_update(ide_drive_t *driv
} while (stat & BUSY_STAT);

msleep(50); /* wait for IRQ and DRQ_STAT */
- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (!OK_STAT(stat, DRQ_STAT, BAD_R_STAT)) {
SELECT_MASK(drive, 0);
@@ -733,7 +743,7 @@ int ide_driveid_update(ide_drive_t *driv
return 0;
}
hwif->input_data(drive, NULL, id, SECTOR_SIZE);
- (void)ide_read_status(drive); /* clear drive IRQ */
+ (void)hwif->read_status(hwif); /* clear drive IRQ */
local_irq_enable();
local_irq_restore(flags);
ide_fix_driveid(id);
@@ -935,12 +945,13 @@ static ide_startstop_t do_reset1 (ide_dr
*/
static ide_startstop_t atapi_reset_pollfunc (ide_drive_t *drive)
{
- ide_hwgroup_t *hwgroup = HWGROUP(drive);
+ ide_hwif_t *hwif = drive->hwif;
+ ide_hwgroup_t *hwgroup = hwif->hwgroup;
u8 stat;

SELECT_DRIVE(drive);
udelay (10);
- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (OK_STAT(stat, 0, BUSY_STAT))
printk("%s: ATAPI reset complete\n", drive->name);
@@ -984,7 +995,7 @@ static ide_startstop_t reset_pollfunc (i
}
}

- tmp = ide_read_status(drive);
+ tmp = hwif->read_status(hwif);

if (!OK_STAT(tmp, 0, BUSY_STAT)) {
if (time_before(jiffies, hwgroup->poll_timeout)) {
@@ -1196,7 +1207,7 @@ int ide_wait_not_busy(ide_hwif_t *hwif,
* about locking issues (2.5 work ?).
*/
mdelay(1);
- stat = hwif->INB(hwif->io_ports.status_addr);
+ stat = hwif->read_status(hwif);
if ((stat & BUSY_STAT) == 0)
return 0;
/*
Index: b/drivers/ide/ide-probe.c
===================================================================
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -276,7 +276,7 @@ static int actual_try_to_identify (ide_d

if (io_ports->ctl_addr) {
a = ide_read_altstatus(drive);
- s = ide_read_status(drive);
+ s = hwif->read_status(hwif);
if ((a ^ s) & ~INDEX_STAT)
/* ancient Seagate drives, broken interfaces */
printk(KERN_INFO "%s: probing with STATUS(0x%02x) "
@@ -307,12 +307,12 @@ static int actual_try_to_identify (ide_d
/* give drive a breather */
msleep(50);
s = use_altstatus ? ide_read_altstatus(drive)
- : ide_read_status(drive);
+ : hwif->read_status(hwif);
} while (s & BUSY_STAT);

/* wait for IRQ and DRQ_STAT */
msleep(50);
- s = ide_read_status(drive);
+ s = hwif->read_status(hwif);

if (OK_STAT(s, DRQ_STAT, BAD_R_STAT)) {
unsigned long flags;
@@ -324,7 +324,7 @@ static int actual_try_to_identify (ide_d
/* drive responded with ID */
rc = 0;
/* clear drive IRQ */
- (void)ide_read_status(drive);
+ (void)hwif->read_status(hwif);
local_irq_restore(flags);
} else {
/* drive refused ID */
@@ -371,7 +371,7 @@ static int try_to_identify (ide_drive_t

ide_set_irq(drive, 0);
/* clear drive IRQ */
- (void)ide_read_status(drive);
+ (void)hwif->read_status(hwif);
udelay(5);
irq = probe_irq_off(cookie);
if (!hwif->irq) {
@@ -396,7 +396,7 @@ static int ide_busy_sleep(ide_hwif_t *hw

do {
msleep(50);
- stat = hwif->INB(hwif->io_ports.status_addr);
+ stat = hwif->read_status(hwif);
if ((stat & BUSY_STAT) == 0)
return 0;
} while (time_before(jiffies, timeout));
@@ -461,7 +461,7 @@ static int do_probe (ide_drive_t *drive,
return 3;
}

- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (OK_STAT(stat, READY_STAT, BUSY_STAT) ||
drive->present || cmd == WIN_PIDENTIFY) {
@@ -471,7 +471,7 @@ static int do_probe (ide_drive_t *drive,
rc = try_to_identify(drive,cmd);
}

- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (stat == (BUSY_STAT | READY_STAT))
return 4;
@@ -488,7 +488,7 @@ static int do_probe (ide_drive_t *drive,
}

/* ensure drive IRQ is clear */
- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (rc == 1)
printk(KERN_ERR "%s: no response (status = 0x%02x)\n",
@@ -502,7 +502,7 @@ static int do_probe (ide_drive_t *drive,
SELECT_DRIVE(&hwif->drives[0]);
msleep(50);
/* ensure drive irq is clear */
- (void)ide_read_status(drive);
+ (void)hwif->read_status(hwif);
}
return rc;
}
@@ -527,7 +527,7 @@ static void enable_nest (ide_drive_t *dr

msleep(50);

- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (!OK_STAT(stat, 0, BAD_STAT))
printk(KERN_CONT "failed (status = 0x%02x)\n", stat);
Index: b/drivers/ide/ide-tape.c
===================================================================
--- a/drivers/ide/ide-tape.c
+++ b/drivers/ide/ide-tape.c
@@ -927,11 +927,12 @@ static void idetape_create_mode_sense_cm

static ide_startstop_t idetape_media_access_finished(ide_drive_t *drive)
{
+ ide_hwif_t *hwif = drive->hwif;
idetape_tape_t *tape = drive->driver_data;
struct ide_atapi_pc *pc = tape->pc;
u8 stat;

- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (stat & SEEK_STAT) {
if (stat & ERR_STAT) {
@@ -980,6 +981,7 @@ static void ide_tape_create_rw_cmd(ideta
static ide_startstop_t idetape_do_request(ide_drive_t *drive,
struct request *rq, sector_t block)
{
+ ide_hwif_t *hwif = drive->hwif;
idetape_tape_t *tape = drive->driver_data;
struct ide_atapi_pc *pc = NULL;
struct request *postponed_rq = tape->postponed_rq;
@@ -1017,7 +1019,7 @@ static ide_startstop_t idetape_do_reques
* If the tape is still busy, postpone our request and service
* the other device meanwhile.
*/
- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (!drive->dsc_overlap && !(rq->cmd[0] & REQ_IDETAPE_PC2))
set_bit(IDETAPE_FLAG_IGNORE_DSC, &tape->flags);
Index: b/drivers/ide/ide-taskfile.c
===================================================================
--- a/drivers/ide/ide-taskfile.c
+++ b/drivers/ide/ide-taskfile.c
@@ -124,7 +124,8 @@ EXPORT_SYMBOL_GPL(do_rw_taskfile);
*/
static ide_startstop_t set_multmode_intr(ide_drive_t *drive)
{
- u8 stat = ide_read_status(drive);
+ ide_hwif_t *hwif = drive->hwif;
+ u8 stat = hwif->read_status(hwif);

if (OK_STAT(stat, READY_STAT, BAD_STAT))
drive->mult_count = drive->mult_req;
@@ -141,10 +142,11 @@ static ide_startstop_t set_multmode_intr
*/
static ide_startstop_t set_geometry_intr(ide_drive_t *drive)
{
+ ide_hwif_t *hwif = drive->hwif;
int retries = 5;
u8 stat;

- while (((stat = ide_read_status(drive)) & BUSY_STAT) && retries--)
+ while (((stat = hwif->read_status(hwif)) & BUSY_STAT) && retries--)
udelay(10);

if (OK_STAT(stat, READY_STAT, BAD_STAT))
@@ -162,7 +164,8 @@ static ide_startstop_t set_geometry_intr
*/
static ide_startstop_t recal_intr(ide_drive_t *drive)
{
- u8 stat = ide_read_status(drive);
+ ide_hwif_t *hwif = drive->hwif;
+ u8 stat = hwif->read_status(hwif);

if (!OK_STAT(stat, READY_STAT, BAD_STAT))
return ide_error(drive, "recal_intr", stat);
@@ -174,11 +177,12 @@ static ide_startstop_t recal_intr(ide_dr
*/
static ide_startstop_t task_no_data_intr(ide_drive_t *drive)
{
- ide_task_t *args = HWGROUP(drive)->rq->special;
+ ide_hwif_t *hwif = drive->hwif;
+ ide_task_t *args = hwif->hwgroup->rq->special;
u8 stat;

local_irq_enable_in_hardirq();
- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (!OK_STAT(stat, READY_STAT, BAD_STAT))
return ide_error(drive, "task_no_data_intr", stat);
@@ -192,6 +196,7 @@ static ide_startstop_t task_no_data_intr

static u8 wait_drive_not_busy(ide_drive_t *drive)
{
+ ide_hwif_t *hwif = drive->hwif;
int retries;
u8 stat;

@@ -200,7 +205,7 @@ static u8 wait_drive_not_busy(ide_drive_
* take up to 6 ms on some ATAPI devices, so we will wait max 10 ms.
*/
for (retries = 0; retries < 1000; retries++) {
- stat = ide_read_status(drive);
+ stat = hwif->read_status(hwif);

if (stat & BUSY_STAT)
udelay(10);
@@ -383,8 +388,8 @@ static ide_startstop_t task_in_unexpecte
static ide_startstop_t task_in_intr(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;
- struct request *rq = HWGROUP(drive)->rq;
- u8 stat = ide_read_status(drive);
+ struct request *rq = hwif->hwgroup->rq;
+ u8 stat = hwif->read_status(hwif);

/* Error? */
if (stat & ERR_STAT)
@@ -418,7 +423,7 @@ static ide_startstop_t task_out_intr (id
{
ide_hwif_t *hwif = drive->hwif;
struct request *rq = HWGROUP(drive)->rq;
- u8 stat = ide_read_status(drive);
+ u8 stat = hwif->read_status(hwif);

if (!OK_STAT(stat, DRIVE_READY, drive->bad_wstat))
return task_error(drive, rq, __func__, stat);
Index: b/drivers/ide/pci/ns87415.c
===================================================================
--- a/drivers/ide/pci/ns87415.c
+++ b/drivers/ide/pci/ns87415.c
@@ -63,6 +63,11 @@ static u8 superio_ide_inb (unsigned long
return inb(port);
}

+static u8 superio_read_status(ide_hwif_t *hwif)
+{
+ return superio_ide_inb(hwif->io_ports.status_addr);
+}
+
static u8 superio_read_sff_dma_status(ide_hwif_t *hwif)
{
return superio_ide_inb(hwif->dma_base + ATA_DMA_STATUS);
@@ -127,6 +132,7 @@ static void __devinit superio_ide_init_i
tmp = superio_ide_inb(superio_ide_dma_status[port]);
outb(tmp | 0x66, superio_ide_dma_status[port]);

+ hwif->read_status = superio_read_status;
hwif->read_sff_dma_status = superio_read_sff_dma_status;

hwif->tf_read = superio_tf_read;
@@ -287,7 +293,7 @@ static void __devinit init_hwif_ns87415
outb(8, hwif->io_ports.ctl_addr);
do {
udelay(50);
- stat = hwif->INB(hwif->io_ports.status_addr);
+ stat = hwif->read_status(hwif);
if (stat == 0xff)
break;
} while ((stat & BUSY_STAT) && --timeout);
Index: b/drivers/ide/pci/scc_pata.c
===================================================================
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -134,6 +134,11 @@ static void scc_exec_command(ide_hwif_t
eieio();
}

+static u8 scc_read_status(ide_hwif_t *hwif)
+{
+ return (u8)in_be32((void *)hwif->io_ports.status_addr);
+}
+
static u8 scc_read_sff_dma_status(ide_hwif_t *hwif)
{
return (u8)in_be32((void *)(hwif->dma_base + 4));
@@ -789,6 +794,7 @@ static void __devinit init_mmio_iops_scc
ide_set_hwifdata(hwif, ports);

hwif->exec_command = scc_exec_command;
+ hwif->read_status = scc_read_status;
hwif->read_sff_dma_status = scc_read_sff_dma_status;

hwif->tf_load = scc_tf_load;
Index: b/drivers/ide/pci/sgiioc4.c
===================================================================
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -127,7 +127,7 @@ sgiioc4_checkirq(ide_hwif_t * hwif)
return 0;
}

-static u8 sgiioc4_INB(unsigned long);
+static u8 sgiioc4_read_status(ide_hwif_t *);

static int
sgiioc4_clearirq(ide_drive_t * drive)
@@ -141,18 +141,19 @@ sgiioc4_clearirq(ide_drive_t * drive)
intr_reg = readl((void __iomem *)other_ir);
if (intr_reg & 0x03) { /* Valid IOC4-IDE interrupt */
/*
- * Using sgiioc4_INB to read the Status register has a side
- * effect of clearing the interrupt. The first read should
+ * Using sgiioc4_read_status to read the Status register has a
+ * side effect of clearing the interrupt. The first read should
* clear it if it is set. The second read should return
* a "clear" status if it got cleared. If not, then spin
* for a bit trying to clear it.
*/
- u8 stat = sgiioc4_INB(io_ports->status_addr);
+ u8 stat = sgiioc4_read_status(hwif);
int count = 0;
- stat = sgiioc4_INB(io_ports->status_addr);
+
+ stat = sgiioc4_read_status(hwif);
while ((stat & 0x80) && (count++ < 100)) {
udelay(1);
- stat = sgiioc4_INB(io_ports->status_addr);
+ stat = sgiioc4_read_status(hwif);
}

if (intr_reg & 0x02) {
@@ -304,9 +305,9 @@ sgiioc4_dma_lost_irq(ide_drive_t * drive
ide_dma_lost_irq(drive);
}

-static u8
-sgiioc4_INB(unsigned long port)
+static u8 sgiioc4_read_status(ide_hwif_t *hwif)
{
+ unsigned long port = hwif->io_ports.status_addr;
u8 reg = (u8) readb((void __iomem *) port);

if ((port & 0xFFF) == 0x11C) { /* Status register of IOC4 */
@@ -628,7 +629,7 @@ sgiioc4_ide_setup_pci_device(struct pci_
/* Initializing chipset IRQ Registers */
writel(0x03, (void __iomem *)(irqport + IOC4_INTR_SET * 4));

- hwif->INB = &sgiioc4_INB;
+ hwif->read_status = sgiioc4_read_status;

idx[0] = hwif->index;

Index: b/drivers/scsi/ide-scsi.c
===================================================================
--- a/drivers/scsi/ide-scsi.c
+++ b/drivers/scsi/ide-scsi.c
@@ -246,7 +246,7 @@ idescsi_atapi_error(ide_drive_t *drive,
{
ide_hwif_t *hwif = drive->hwif;

- if (ide_read_status(drive) & (BUSY_STAT | DRQ_STAT))
+ if (hwif->read_status(hwif) & (BUSY_STAT | DRQ_STAT))
/* force an abort */
hwif->exec_command(hwif, WIN_IDLEIMMEDIATE);

Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -469,6 +469,7 @@ typedef struct hwif_s {
const struct ide_dma_ops *dma_ops;

void (*exec_command)(struct hwif_s *, u8);
+ u8 (*read_status)(struct hwif_s *);
u8 (*read_sff_dma_status)(struct hwif_s *);

void (*tf_load)(ide_drive_t *, struct ide_task_s *);
@@ -1348,13 +1349,6 @@ static inline void ide_set_irq(ide_drive
hwif->io_ports.ctl_addr);
}

-static inline u8 ide_read_status(ide_drive_t *drive)
-{
- ide_hwif_t *hwif = drive->hwif;
-
- return hwif->INB(hwif->io_ports.status_addr);
-}
-
static inline u8 ide_read_altstatus(ide_drive_t *drive)
{
ide_hwif_t *hwif = drive->hwif;

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