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Subject[PATCH 4/8] ide: add ide_for_each_present_dev() iterator
From: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Subject: [PATCH] ide: add ide_for_each_present_dev() iterator

* Add ide_for_each_present_dev() iterator and convert IDE code to use it.

* Do some drive-by CodingStyle fixups in ide-acpi.c while at it.

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
---
drivers/ide/ide-acpi.c | 30 ++++++++++--------------------
drivers/ide/ide-iops.c | 5 ++---
drivers/ide/ide-probe.c | 38 +++++++++++++-------------------------
include/linux/ide.h | 4 ++++
4 files changed, 29 insertions(+), 48 deletions(-)
Index: b/drivers/ide/ide-acpi.c
===================================================================
--- a/drivers/ide/ide-acpi.c
+++ b/drivers/ide/ide-acpi.c
@@ -614,17 +614,17 @@ void ide_acpi_set_state(ide_hwif_t *hwif
DEBPRINT("no ACPI data for %s\n", hwif->name);
return;
}
+
/* channel first and then drives for power on and verse versa for power off */
if (on)
acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D0);

- ide_port_for_each_dev(i, drive, hwif) {
- if (drive->acpidata->obj_handle &&
- (drive->dev_flags & IDE_DFLAG_PRESENT)) {
+ ide_port_for_each_present_dev(i, drive, hwif) {
+ if (drive->acpidata->obj_handle)
acpi_bus_set_power(drive->acpidata->obj_handle,
- on? ACPI_STATE_D0: ACPI_STATE_D3);
- }
+ on ? ACPI_STATE_D0 : ACPI_STATE_D3);
}
+
if (!on)
acpi_bus_set_power(hwif->acpidata->obj_handle, ACPI_STATE_D3);
}
@@ -673,12 +673,9 @@ void ide_acpi_port_init_devices(ide_hwif
hwif->devices[1]->acpidata = &hwif->acpidata->slave;

/* get _ADR info for each device */
- ide_port_for_each_dev(i, drive, hwif) {
+ ide_port_for_each_present_dev(i, drive, hwif) {
acpi_handle dev_handle;

- if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
- continue;
-
DEBPRINT("ENTER: %s at channel#: %d port#: %d\n",
drive->name, hwif->channel, drive->dn & 1);

@@ -691,13 +688,8 @@ void ide_acpi_port_init_devices(ide_hwif
drive->acpidata->obj_handle = dev_handle;
}

- /*
- * Send IDENTIFY for each drive
- */
- ide_port_for_each_dev(i, drive, hwif) {
- if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
- continue;
-
+ /* send IDENTIFY for each device */
+ ide_port_for_each_present_dev(i, drive, hwif) {
err = taskfile_lib_get_identify(drive, drive->acpidata->idbuff);
if (err)
DEBPRINT("identify device %s failed (%d)\n",
@@ -717,9 +709,7 @@ void ide_acpi_port_init_devices(ide_hwif
ide_acpi_get_timing(hwif);
ide_acpi_push_timing(hwif);

- ide_port_for_each_dev(i, drive, hwif) {
- if (drive->dev_flags & IDE_DFLAG_PRESENT)
- /* Execute ACPI startup code */
- ide_acpi_exec_tfs(drive);
+ ide_port_for_each_present_dev(i, drive, hwif) {
+ ide_acpi_exec_tfs(drive);
}
}
Index: b/drivers/ide/ide-iops.c
===================================================================
--- a/drivers/ide/ide-iops.c
+++ b/drivers/ide/ide-iops.c
@@ -1101,9 +1101,8 @@ static ide_startstop_t do_reset1 (ide_dr

prepare_to_wait(&ide_park_wq, &wait, TASK_UNINTERRUPTIBLE);
timeout = jiffies;
- ide_port_for_each_dev(i, tdrive, hwif) {
- if (tdrive->dev_flags & IDE_DFLAG_PRESENT &&
- tdrive->dev_flags & IDE_DFLAG_PARKED &&
+ ide_port_for_each_present_dev(i, tdrive, hwif) {
+ if ((tdrive->dev_flags & IDE_DFLAG_PARKED) &&
time_after(tdrive->sleep, timeout))
timeout = tdrive->sleep;
}
Index: b/drivers/ide/ide-probe.c
===================================================================
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -824,22 +824,18 @@ static void ide_port_tune_devices(ide_hw
ide_drive_t *drive;
int i;

- ide_port_for_each_dev(i, drive, hwif) {
- if (drive->dev_flags & IDE_DFLAG_PRESENT) {
- if (port_ops && port_ops->quirkproc)
- port_ops->quirkproc(drive);
- }
+ ide_port_for_each_present_dev(i, drive, hwif) {
+ if (port_ops && port_ops->quirkproc)
+ port_ops->quirkproc(drive);
}

- ide_port_for_each_dev(i, drive, hwif) {
- if (drive->dev_flags & IDE_DFLAG_PRESENT) {
- ide_set_max_pio(drive);
+ ide_port_for_each_present_dev(i, drive, hwif) {
+ ide_set_max_pio(drive);

- drive->dev_flags |= IDE_DFLAG_NICE1;
+ drive->dev_flags |= IDE_DFLAG_NICE1;

- if (hwif->dma_ops)
- ide_set_dma(drive);
- }
+ if (hwif->dma_ops)
+ ide_set_dma(drive);
}
}

@@ -910,10 +906,7 @@ static int ide_port_setup_devices(ide_hw
int i, j = 0;

mutex_lock(&ide_cfg_mtx);
- ide_port_for_each_dev(i, drive, hwif) {
- if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
- continue;
-
+ ide_port_for_each_present_dev(i, drive, hwif) {
if (ide_init_queue(drive)) {
printk(KERN_ERR "ide: failed to init %s\n",
drive->name);
@@ -1125,13 +1118,10 @@ static void hwif_register_devices(ide_hw
ide_drive_t *drive;
unsigned int i;

- ide_port_for_each_dev(i, drive, hwif) {
+ ide_port_for_each_present_dev(i, drive, hwif) {
struct device *dev = &drive->gendev;
int ret;

- if ((drive->dev_flags & IDE_DFLAG_PRESENT) == 0)
- continue;
-
dev_set_name(dev, "%u.%u", hwif->index, i);
dev->parent = &hwif->gendev;
dev->bus = &ide_bus_type;
@@ -1574,11 +1564,9 @@ static void __ide_port_unregister_device
ide_drive_t *drive;
int i;

- ide_port_for_each_dev(i, drive, hwif) {
- if (drive->dev_flags & IDE_DFLAG_PRESENT) {
- device_unregister(&drive->gendev);
- wait_for_completion(&drive->gendev_rel_comp);
- }
+ ide_port_for_each_present_dev(i, drive, hwif) {
+ device_unregister(&drive->gendev);
+ wait_for_completion(&drive->gendev_rel_comp);
}
}

Index: b/include/linux/ide.h
===================================================================
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1607,6 +1607,10 @@ static inline ide_drive_t *ide_get_pair_
#define ide_port_for_each_dev(i, dev, port) \
for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++)

+#define ide_port_for_each_present_dev(i, dev, port) \
+ for ((i) = 0; ((dev) = (port)->devices[i]) || (i) < MAX_DRIVES; (i)++) \
+ if ((dev)->dev_flags & IDE_DFLAG_PRESENT)
+
#define ide_host_for_each_port(i, port, host) \
for ((i) = 0; ((port) = (host)->ports[i]) || (i) < MAX_HOST_PORTS; (i)++)


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