ide: pass hw_regs_t-s to ide_device_add[_all]() (take 3)

* Add 'hw_regs_t **hws' argument to ide_device_add[_all]() and convert
  host drivers + ide_legacy_init_one() + ide_setup_pci_device[s]() to use
  it instead of calling ide_init_port_hw() directly.

  [ However if host has > 1 port we must still set hwif->chipset to hint
    consecutive ide_find_port() call that the previous slot is occupied. ]

* Unexport ide_init_port_hw().

v2:
* Use defines instead of hard-coded values in buddha.c, gayle.c and q40ide.c.
  (Suggested by Geert Uytterhoeven)

* Better patch description.

v3:
* Fix build problem in ide-cs.c. (Noticed by Stephen Rothwell)

There should be no functional changes caused by this patch.

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

27 files changed, 131 insertions, 140 deletions

diff --git a/drivers/ide/arm/icside.c b/drivers/ide/arm/icside.c
index 52f58c885783..850fe9342a1f 100644
--- a/drivers/ide/arm/icside.c
+++ b/drivers/ide/arm/icside.c
@@ -442,8 +442,8 @@ icside_register_v5(struct icside_state *state, struct expansion_card *ec)
 {
         ide_hwif_t *hwif;
         void __iomem *base;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
-        hw_regs_t hw;
 
         base = ecardm_iomap(ec, ECARD_RES_MEMC, 0, 0);
         if (!base)
@@ -467,7 +467,6 @@ icside_register_v5(struct icside_state *state, struct expansion_card *ec)
         if (!hwif)
                 return -ENODEV;
 
-        ide_init_port_hw(hwif, &hw);
         default_hwif_mmiops(hwif);
 
         state->hwif[0] = hwif;
@@ -476,7 +475,7 @@ icside_register_v5(struct icside_state *state, struct expansion_card *ec)
 
         idx[0] = hwif->index;
 
-        ide_device_add(idx, NULL);
+        ide_device_add(idx, NULL, hws);
 
         return 0;
 }
@@ -497,9 +496,9 @@ icside_register_v6(struct icside_state *state, struct expansion_card *ec)
         void __iomem *ioc_base, *easi_base;
         unsigned int sel = 0;
         int ret;
+        hw_regs_t hw[2], *hws[] = { &hw[0], NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
         struct ide_port_info d = icside_v6_port_info;
-        hw_regs_t hw[2];
 
         ioc_base = ecardm_iomap(ec, ECARD_RES_IOCFAST, 0, 0);
         if (!ioc_base) {
@@ -545,16 +544,16 @@ icside_register_v6(struct icside_state *state, struct expansion_card *ec)
         if (hwif == NULL)
                 return -ENODEV;
 
-        ide_init_port_hw(hwif, &hw[0]);
+        hwif->chipset = ide_acorn;
         default_hwif_mmiops(hwif);
 
         idx[0] = hwif->index;
 
         mate = ide_find_port();
         if (mate) {
-                ide_init_port_hw(mate, &hw[1]);
                 default_hwif_mmiops(mate);
 
+                hws[1] = &hw[1];
                 idx[1] = mate->index;
         }
 
@@ -569,7 +568,7 @@ icside_register_v6(struct icside_state *state, struct expansion_card *ec)
                 d.dma_ops = NULL;
         }
 
-        ide_device_add(idx, &d);
+        ide_device_add(idx, &d, hws);
 
         return 0;
 
diff --git a/drivers/ide/arm/ide_arm.c b/drivers/ide/arm/ide_arm.c
index 2f311da4c963..e9831bbd988a 100644
--- a/drivers/ide/arm/ide_arm.c
+++ b/drivers/ide/arm/ide_arm.c
@@ -29,8 +29,8 @@
 static int __init ide_arm_init(void)
 {
         ide_hwif_t *hwif;
-        hw_regs_t hw;
         unsigned long base = IDE_ARM_IO, ctl = IDE_ARM_IO + 0x206;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 
         if (!request_region(base, 8, DRV_NAME)) {
@@ -53,10 +53,9 @@ static int __init ide_arm_init(void)
 
         hwif = ide_find_port();
         if (hwif) {
-                ide_init_port_hw(hwif, &hw);
                 idx[0] = hwif->index;
 
-                ide_device_add(idx, NULL);
+                ide_device_add(idx, NULL, hws);
         }
 
         return 0;
diff --git a/drivers/ide/arm/palm_bk3710.c b/drivers/ide/arm/palm_bk3710.c
index c79b85b6e4a3..023c10753f15 100644
--- a/drivers/ide/arm/palm_bk3710.c
+++ b/drivers/ide/arm/palm_bk3710.c
@@ -351,7 +351,7 @@ static int __devinit palm_bk3710_probe(struct platform_device *pdev)
         ide_hwif_t *hwif;
         unsigned long base, rate;
         int i;
-        hw_regs_t hw;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 
         clk = clk_get(NULL, "IDECLK");
@@ -400,13 +400,11 @@ static int __devinit palm_bk3710_probe(struct platform_device *pdev)
 
         i = hwif->index;
 
-        ide_init_port_hw(hwif, &hw);
-
         default_hwif_mmiops(hwif);
 
         idx[0] = i;
 
-        ide_device_add(idx, &palm_bk3710_port_info);
+        ide_device_add(idx, &palm_bk3710_port_info, hws);
 
         return 0;
 out:
diff --git a/drivers/ide/arm/rapide.c b/drivers/ide/arm/rapide.c
index 43057e0303c8..01896f6e8acf 100644
--- a/drivers/ide/arm/rapide.c
+++ b/drivers/ide/arm/rapide.c
@@ -35,8 +35,8 @@ rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
         ide_hwif_t *hwif;
         void __iomem *base;
         int ret;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
-        hw_regs_t hw;
 
         ret = ecard_request_resources(ec);
         if (ret)
@@ -59,12 +59,11 @@ rapide_probe(struct expansion_card *ec, const struct ecard_id *id)
                 goto release;
         }
 
-        ide_init_port_hw(hwif, &hw);
         default_hwif_mmiops(hwif);
 
         idx[0] = hwif->index;
 
-        ide_device_add(idx, &rapide_port_info);
+        ide_device_add(idx, &rapide_port_info, hws);
 
         ecard_set_drvdata(ec, hwif);
         goto out;
diff --git a/drivers/ide/h8300/ide-h8300.c b/drivers/ide/h8300/ide-h8300.c
index 20fad6d542cc..a71433b3d0f3 100644
--- a/drivers/ide/h8300/ide-h8300.c
+++ b/drivers/ide/h8300/ide-h8300.c
@@ -184,9 +184,9 @@ static const struct ide_port_info h8300_port_info = {
 
 static int __init h8300_ide_init(void)
 {
-        hw_regs_t hw;
         ide_hwif_t *hwif;
         int index;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 
         printk(KERN_INFO DRV_NAME ": H8/300 generic IDE interface\n");
@@ -205,12 +205,11 @@ static int __init h8300_ide_init(void)
                 return -ENOENT;
 
         index = hwif->index;
-        ide_init_port_hw(hwif, &hw);
         hwif_setup(hwif);
 
         idx[0] = index;
 
-        ide_device_add(idx, &h8300_port_info);
+        ide_device_add(idx, &h8300_port_info, hws);
 
         return 0;
 
diff --git a/drivers/ide/ide-generic.c b/drivers/ide/ide-generic.c
index 2d92214096ab..bb9fc905d60c 100644
--- a/drivers/ide/ide-generic.c
+++ b/drivers/ide/ide-generic.c
@@ -31,7 +31,7 @@ static ssize_t store_add(struct class *cls, const char *buf, size_t n)
         ide_hwif_t *hwif;
         unsigned int base, ctl;
         int irq;
-        hw_regs_t hw;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
         u8 idx[] = { 0xff, 0xff, 0xff, 0xff };
 
         if (sscanf(buf, "%x:%x:%d", &base, &ctl, &irq) != 3)
@@ -46,11 +46,9 @@ static ssize_t store_add(struct class *cls, const char *buf, size_t n)
         hw.irq = irq;
         hw.chipset = ide_generic;
 
-        ide_init_port_hw(hwif, &hw);
-
         idx[0] = hwif->index;
 
-        ide_device_add(idx, NULL);
+        ide_device_add(idx, NULL, hws);
 
         return n;
 };
@@ -90,6 +88,7 @@ static int __init ide_generic_sysfs_init(void)
 
 static int __init ide_generic_init(void)
 {
+        hw_regs_t hw[MAX_HWIFS], *hws[MAX_HWIFS];
         u8 idx[MAX_HWIFS];
         int i;
 
@@ -99,8 +98,8 @@ static int __init ide_generic_init(void)
         for (i = 0; i < MAX_HWIFS; i++) {
                 ide_hwif_t *hwif;
                 unsigned long io_addr = ide_default_io_base(i);
-                hw_regs_t hw;
 
+                hws[i] = NULL;
                 idx[i] = 0xff;
 
                 if ((probe_mask & (1 << i)) && io_addr) {
@@ -129,17 +128,19 @@ static int __init ide_generic_init(void)
                                 continue;
                         }
 
-                        memset(&hw, 0, sizeof(hw));
-                        ide_std_init_ports(&hw, io_addr, io_addr + 0x206);
-                        hw.irq = ide_default_irq(io_addr);
-                        hw.chipset = ide_generic;
-                        ide_init_port_hw(hwif, &hw);
+                        hwif->chipset = ide_generic;
+
+                        memset(&hw[i], 0, sizeof(hw[i]));
+                        ide_std_init_ports(&hw[i], io_addr, io_addr + 0x206);
+                        hw[i].irq = ide_default_irq(io_addr);
+                        hw[i].chipset = ide_generic;
 
+                        hws[i] = &hw[i];
                         idx[i] = i;
                 }
         }
 
-        ide_device_add_all(idx, NULL);
+        ide_device_add_all(idx, NULL, hws);
 
         if (ide_generic_sysfs_init())
                 printk(KERN_ERR DRV_NAME ": failed to create ide_generic "
diff --git a/drivers/ide/ide-pnp.c b/drivers/ide/ide-pnp.c
index 03f2ef5470a3..89cd5cbe8573 100644
--- a/drivers/ide/ide-pnp.c
+++ b/drivers/ide/ide-pnp.c
@@ -29,9 +29,9 @@ static struct pnp_device_id idepnp_devices[] = {
 
 static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
 {
-        hw_regs_t hw;
         ide_hwif_t *hwif;
         unsigned long base, ctl;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
 
         printk(KERN_INFO DRV_NAME ": generic PnP IDE interface\n");
 
@@ -64,11 +64,9 @@ static int idepnp_probe(struct pnp_dev *dev, const struct pnp_device_id *dev_id)
                 u8 index = hwif->index;
                 u8 idx[4] = { index, 0xff, 0xff, 0xff };
 
-                ide_init_port_hw(hwif, &hw);
-
                 pnp_set_drvdata(dev, hwif);
 
-                ide_device_add(idx, NULL);
+                ide_device_add(idx, NULL, hws);
 
                 return 0;
         }
diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 235ebdb29b28..9d8686a49fcf 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1501,7 +1501,7 @@ out_found:
 }
 EXPORT_SYMBOL_GPL(ide_find_port_slot);
 
-int ide_device_add_all(u8 *idx, const struct ide_port_info *d)
+int ide_device_add_all(u8 *idx, const struct ide_port_info *d, hw_regs_t **hws)
 {
         ide_hwif_t *hwif, *mate = NULL;
         int i, rc = 0;
@@ -1514,6 +1514,7 @@ int ide_device_add_all(u8 *idx, const struct ide_port_info *d)
 
                 hwif = &ide_hwifs[idx[i]];
 
+                ide_init_port_hw(hwif, hws[i]);
                 ide_port_apply_params(hwif);
 
                 if (d == NULL) {
@@ -1603,15 +1604,18 @@ int ide_device_add_all(u8 *idx, const struct ide_port_info *d)
 }
 EXPORT_SYMBOL_GPL(ide_device_add_all);
 
-int ide_device_add(u8 idx[4], const struct ide_port_info *d)
+int ide_device_add(u8 *idx, const struct ide_port_info *d, hw_regs_t **hws)
 {
+        hw_regs_t *hws_all[MAX_HWIFS];
         u8 idx_all[MAX_HWIFS];
         int i;
 
-        for (i = 0; i < MAX_HWIFS; i++)
+        for (i = 0; i < MAX_HWIFS; i++) {
+                hws_all[i] = (i < 4) ? hws[i] : NULL;
                 idx_all[i] = (i < 4) ? idx[i] : 0xff;
+        }
 
-        return ide_device_add_all(idx_all, d);
+        return ide_device_add_all(idx_all, d, hws_all);
 }
 EXPORT_SYMBOL_GPL(ide_device_add);
 
@@ -1634,8 +1638,8 @@ void ide_port_scan(ide_hwif_t *hwif)
 }
 EXPORT_SYMBOL_GPL(ide_port_scan);
 
-static void ide_legacy_init_one(u8 *idx, hw_regs_t *hw, u8 port_no,
-                                const struct ide_port_info *d,
+static void ide_legacy_init_one(u8 *idx, hw_regs_t **hws, hw_regs_t *hw,
+                                u8 port_no, const struct ide_port_info *d,
                                 unsigned long config)
 {
         ide_hwif_t *hwif;
@@ -1671,9 +1675,12 @@ static void ide_legacy_init_one(u8 *idx, hw_regs_t *hw, u8 port_no,
 
         hwif = ide_find_port_slot(d);
         if (hwif) {
-                ide_init_port_hw(hwif, hw);
+                hwif->chipset = hw->chipset;
+
                 if (config)
                         hwif->config_data = config;
+
+                hws[port_no] = hw;
                 idx[port_no] = hwif->index;
         }
 }
@@ -1681,19 +1688,19 @@ static void ide_legacy_init_one(u8 *idx, hw_regs_t *hw, u8 port_no,
 int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config)
 {
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
-        hw_regs_t hw[2];
+        hw_regs_t hw[2], *hws[] = { NULL, NULL, NULL, NULL };
 
         memset(&hw, 0, sizeof(hw));
 
         if ((d->host_flags & IDE_HFLAG_QD_2ND_PORT) == 0)
-                ide_legacy_init_one(idx, &hw[0], 0, d, config);
-        ide_legacy_init_one(idx, &hw[1], 1, d, config);
+                ide_legacy_init_one(idx, hws, &hw[0], 0, d, config);
+        ide_legacy_init_one(idx, hws, &hw[1], 1, d, config);
 
         if (idx[0] == 0xff && idx[1] == 0xff &&
             (d->host_flags & IDE_HFLAG_SINGLE))
                 return -ENOENT;
 
-        ide_device_add(idx, d);
+        ide_device_add(idx, d, hws);
 
         return 0;
 }
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index d4a6b102a772..b6018f7b0907 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -288,7 +288,6 @@ void ide_init_port_hw(ide_hwif_t *hwif, hw_regs_t *hw)
         hwif->gendev.parent = hw->parent ? hw->parent : hw->dev;
         hwif->ack_intr = hw->ack_intr;
 }
-EXPORT_SYMBOL_GPL(ide_init_port_hw);
 
 /*
  *      Locks for IDE setting functionality
diff --git a/drivers/ide/legacy/buddha.c b/drivers/ide/legacy/buddha.c
index 0497e7f85b09..c61bc6a1db36 100644
--- a/drivers/ide/legacy/buddha.c
+++ b/drivers/ide/legacy/buddha.c
@@ -37,6 +37,8 @@
 #define CATWEASEL_NUM_HWIFS     3
 #define XSURF_NUM_HWIFS         2
 
+#define MAX_NUM_HWIFS           3
+
     /*
      *  Bases of the IDE interfaces (relative to the board address)
      */
@@ -148,7 +150,6 @@ static void __init buddha_setup_ports(hw_regs_t *hw, unsigned long base,
 
 static int __init buddha_init(void)
 {
-        hw_regs_t hw;
         ide_hwif_t *hwif;
         int i;
 
@@ -159,6 +160,7 @@ static int __init buddha_init(void)
 
         while ((z = zorro_find_device(ZORRO_WILDCARD, z))) {
                 unsigned long board;
+                hw_regs_t hw[MAX_NUM_HWIFS], *hws[] = { NULL, NULL, NULL, NULL };
                 u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 
                 if (z->id == ZORRO_PROD_INDIVIDUAL_COMPUTERS_BUDDHA) {
@@ -221,19 +223,19 @@ fail_base2:
                                 ack_intr = xsurf_ack_intr;
                         }
 
-                        buddha_setup_ports(&hw, base, ctl, irq_port, ack_intr);
+                        buddha_setup_ports(&hw[i], base, ctl, irq_port,
+                                           ack_intr);
 
                         hwif = ide_find_port();
                         if (hwif) {
-                                u8 index = hwif->index;
-
-                                ide_init_port_hw(hwif, &hw);
+                                hwif->chipset = ide_generic;
 
-                                idx[i] = index;
+                                hws[i] = &hw[i];
+                                idx[i] = hwif->index;
                         }
                 }
 
-                ide_device_add(idx, NULL);
+                ide_device_add(idx, NULL, hws);
         }
 
         return 0;
diff --git a/drivers/ide/legacy/falconide.c b/drivers/ide/legacy/falconide.c
index 129a812bb57f..1bb2aa72cc7f 100644
--- a/drivers/ide/legacy/falconide.c
+++ b/drivers/ide/legacy/falconide.c
@@ -91,8 +91,8 @@ static void __init falconide_setup_ports(hw_regs_t *hw)
 
 static int __init falconide_init(void)
 {
-        hw_regs_t hw;
         ide_hwif_t *hwif;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
 
         if (!MACH_IS_ATARI || !ATARIHW_PRESENT(IDE))
                 return 0;
@@ -111,14 +111,12 @@ static int __init falconide_init(void)
                 u8 index = hwif->index;
                 u8 idx[4] = { index, 0xff, 0xff, 0xff };
 
-                ide_init_port_hw(hwif, &hw);
-
                 /* Atari has a byte-swapped IDE interface */
                 hwif->input_data  = falconide_input_data;
                 hwif->output_data = falconide_output_data;
 
                 ide_get_lock(NULL, NULL);
-                ide_device_add(idx, NULL);
+                ide_device_add(idx, NULL, hws);
                 ide_release_lock();
         }
 
diff --git a/drivers/ide/legacy/gayle.c b/drivers/ide/legacy/gayle.c
index 7e74b20202df..e45c7341186c 100644
--- a/drivers/ide/legacy/gayle.c
+++ b/drivers/ide/legacy/gayle.c
@@ -125,6 +125,7 @@ static void __init gayle_setup_ports(hw_regs_t *hw, unsigned long base,
 static int __init gayle_init(void)
 {
     int a4000, i;
+    hw_regs_t hw[GAYLE_NUM_HWIFS], *hws[] = { NULL, NULL, NULL, NULL };
     u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 
     if (!MACH_IS_AMIGA)
@@ -151,7 +152,6 @@ found:
     for (i = 0; i < GAYLE_NUM_PROBE_HWIFS; i++) {
         unsigned long base, ctrlport, irqport;
         ide_ack_intr_t *ack_intr;
-        hw_regs_t hw;
         ide_hwif_t *hwif;
         unsigned long phys_base, res_start, res_n;
 
@@ -179,20 +179,19 @@ found:
         base = (unsigned long)ZTWO_VADDR(phys_base);
         ctrlport = GAYLE_HAS_CONTROL_REG ? (base + GAYLE_CONTROL) : 0;
 
-        gayle_setup_ports(&hw, base, ctrlport, irqport, ack_intr);
+        gayle_setup_ports(&hw[i], base, ctrlport, irqport, ack_intr);
 
         hwif = ide_find_port();
         if (hwif) {
-            u8 index = hwif->index;
+            hwif->chipset = ide_generic;
 
-            ide_init_port_hw(hwif, &hw);
-
-            idx[i] = index;
+            hws[i] = &hw[i];
+            idx[i] = hwif->index;
         } else
             release_mem_region(res_start, res_n);
     }
 
-    ide_device_add(idx, NULL);
+    ide_device_add(idx, NULL, hws);
 
     return 0;
 }
diff --git a/drivers/ide/legacy/ide-4drives.c b/drivers/ide/legacy/ide-4drives.c
index 89c8ff0a4d08..6310dc50e3c5 100644
--- a/drivers/ide/legacy/ide-4drives.c
+++ b/drivers/ide/legacy/ide-4drives.c
@@ -30,8 +30,8 @@ static int __init ide_4drives_init(void)
 {
         ide_hwif_t *hwif, *mate;
         unsigned long base = 0x1f0, ctl = 0x3f6;
+        hw_regs_t hw, *hws[] = { NULL, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
-        hw_regs_t hw;
 
         if (probe_4drives == 0)
                 return -ENODEV;
@@ -57,17 +57,19 @@ static int __init ide_4drives_init(void)
 
         hwif = ide_find_port();
         if (hwif) {
-                ide_init_port_hw(hwif, &hw);
+                hwif->chipset = ide_4drives;
+
+                hws[0] = &hw;
                 idx[0] = hwif->index;
         }
 
         mate = ide_find_port();
         if (mate) {
-                ide_init_port_hw(mate, &hw);
+                hws[1] = &hw;
                 idx[1] = mate->index;
         }
 
-        ide_device_add(idx, &ide_4drives_port_info);
+        ide_device_add(idx, &ide_4drives_port_info, hws);
 
         return 0;
 }
diff --git a/drivers/ide/legacy/ide-cs.c b/drivers/ide/legacy/ide-cs.c
index 27b1e0b7ecb4..f93d5454ebf8 100644
--- a/drivers/ide/legacy/ide-cs.c
+++ b/drivers/ide/legacy/ide-cs.c
@@ -161,8 +161,8 @@ static ide_hwif_t *idecs_register(unsigned long io, unsigned long ctl,
                                 unsigned long irq, struct pcmcia_device *handle)
 {
     ide_hwif_t *hwif;
-    hw_regs_t hw;
     int i;
+    hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
     u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 
     if (!request_region(io, 8, DRV_NAME)) {
@@ -188,13 +188,9 @@ static ide_hwif_t *idecs_register(unsigned long io, unsigned long ctl,
     if (hwif == NULL)
         goto out_release;
 
-    i = hwif->index;
+    idx[0] = hwif->index;
 
-    ide_init_port_hw(hwif, &hw);
-
-    idx[0] = i;
-
-    ide_device_add(idx, &idecs_port_info);
+    ide_device_add(idx, &idecs_port_info, hws);
 
     if (hwif->present)
         return hwif;
diff --git a/drivers/ide/legacy/ide_platform.c b/drivers/ide/legacy/ide_platform.c
index a249562b34b5..609da0d43196 100644
--- a/drivers/ide/legacy/ide_platform.c
+++ b/drivers/ide/legacy/ide_platform.c
@@ -54,10 +54,9 @@ static int __devinit plat_ide_probe(struct platform_device *pdev)
         void __iomem *base, *alt_base;
         ide_hwif_t *hwif;
         struct pata_platform_info *pdata;
+        int ret = 0, mmio = 0;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
-        int ret = 0;
-        int mmio = 0;
-        hw_regs_t hw;
         struct ide_port_info d = platform_ide_port_info;
 
         pdata = pdev->dev.platform_data;
@@ -104,8 +103,6 @@ static int __devinit plat_ide_probe(struct platform_device *pdev)
         plat_ide_setup_ports(&hw, base, alt_base, pdata, res_irq->start);
         hw.dev = &pdev->dev;
 
-        ide_init_port_hw(hwif, &hw);
-
         if (mmio) {
                 d.host_flags |= IDE_HFLAG_MMIO;
                 default_hwif_mmiops(hwif);
@@ -113,7 +110,7 @@ static int __devinit plat_ide_probe(struct platform_device *pdev)
 
         idx[0] = hwif->index;
 
-        ide_device_add(idx, &d);
+        ide_device_add(idx, &d, hws);
 
         platform_set_drvdata(pdev, hwif);
 
diff --git a/drivers/ide/legacy/macide.c b/drivers/ide/legacy/macide.c
index 0a6195bcfeda..d839df2239fc 100644
--- a/drivers/ide/legacy/macide.c
+++ b/drivers/ide/legacy/macide.c
@@ -95,7 +95,7 @@ static int __init macide_init(void)
         ide_ack_intr_t *ack_intr;
         unsigned long base;
         int irq;
-        hw_regs_t hw;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
 
         if (!MACH_IS_MAC)
                 return -ENODEV;
@@ -130,9 +130,7 @@ static int __init macide_init(void)
                 u8 index = hwif->index;
                 u8 idx[4] = { index, 0xff, 0xff, 0xff };
 
-                ide_init_port_hw(hwif, &hw);
-
-                ide_device_add(idx, NULL);
+                ide_device_add(idx, NULL, hws);
         }
 
         return 0;
diff --git a/drivers/ide/legacy/q40ide.c b/drivers/ide/legacy/q40ide.c
index 9c2b9d078f69..fcb04b8b0238 100644
--- a/drivers/ide/legacy/q40ide.c
+++ b/drivers/ide/legacy/q40ide.c
@@ -112,7 +112,7 @@ static int __init q40ide_init(void)
 {
     int i;
     ide_hwif_t *hwif;
-    const char *name;
+    hw_regs_t hw[Q40IDE_NUM_HWIFS], *hws[] = { NULL, NULL, NULL, NULL };
     u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 
     if (!MACH_IS_Q40)
@@ -121,9 +121,8 @@ static int __init q40ide_init(void)
     printk(KERN_INFO "ide: Q40 IDE controller\n");
 
     for (i = 0; i < Q40IDE_NUM_HWIFS; i++) {
-        hw_regs_t hw;
+        const char *name = q40_ide_names[i];
 
-        name = q40_ide_names[i];
         if (!request_region(pcide_bases[i], 8, name)) {
                 printk("could not reserve ports %lx-%lx for %s\n",
                        pcide_bases[i],pcide_bases[i]+8,name);
@@ -135,24 +134,23 @@ static int __init q40ide_init(void)
                 release_region(pcide_bases[i], 8);
                 continue;
         }
-        q40_ide_setup_ports(&hw, pcide_bases[i],
-                        NULL,
-//                      m68kide_iops,
+        q40_ide_setup_ports(&hw[i], pcide_bases[i], NULL,
                         q40ide_default_irq(pcide_bases[i]));
 
         hwif = ide_find_port();
         if (hwif) {
-                ide_init_port_hw(hwif, &hw);
+                hwif->chipset = ide_generic;
 
                 /* Q40 has a byte-swapped IDE interface */
                 hwif->input_data  = q40ide_input_data;
                 hwif->output_data = q40ide_output_data;
 
+                hws[i] = &hw[i];
                 idx[i] = hwif->index;
         }
     }
 
-    ide_device_add(idx, NULL);
+    ide_device_add(idx, NULL, hws);
 
     return 0;
 }
diff --git a/drivers/ide/mips/au1xxx-ide.c b/drivers/ide/mips/au1xxx-ide.c
index 48d57cae63c6..475da582fd89 100644
--- a/drivers/ide/mips/au1xxx-ide.c
+++ b/drivers/ide/mips/au1xxx-ide.c
@@ -546,8 +546,8 @@ static int au_ide_probe(struct device *dev)
         ide_hwif_t *hwif;
         struct resource *res;
         int ret = 0;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
-        hw_regs_t hw;
 
 #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA)
         char *mode = "MWDMA2";
@@ -596,8 +596,6 @@ static int au_ide_probe(struct device *dev)
         hw.dev = dev;
         hw.chipset = ide_au1xxx;
 
-        ide_init_port_hw(hwif, &hw);
-
         /* If the user has selected DDMA assisted copies,
            then set up a few local I/O function entry points 
         */
@@ -611,7 +609,7 @@ static int au_ide_probe(struct device *dev)
 
         idx[0] = hwif->index;
 
-        ide_device_add(idx, &au1xxx_port_info);
+        ide_device_add(idx, &au1xxx_port_info, hws);
 
         dev_set_drvdata(dev, hwif);
 
diff --git a/drivers/ide/mips/swarm.c b/drivers/ide/mips/swarm.c
index 9f1212cc4aed..6da6844d2d8c 100644
--- a/drivers/ide/mips/swarm.c
+++ b/drivers/ide/mips/swarm.c
@@ -75,8 +75,8 @@ static int __devinit swarm_ide_probe(struct device *dev)
         ide_hwif_t *hwif;
         u8 __iomem *base;
         phys_t offset, size;
-        hw_regs_t hw;
         int i;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
         u8 idx[] = { 0xff, 0xff, 0xff, 0xff };
 
         if (!SIBYTE_HAVE_IDE)
@@ -120,14 +120,12 @@ static int __devinit swarm_ide_probe(struct device *dev)
         if (hwif == NULL)
                 goto err;
 
-        ide_init_port_hw(hwif, &hw);
-
         /* Setup MMIO ops. */
         default_hwif_mmiops(hwif);
 
         idx[0] = hwif->index;
 
-        ide_device_add(idx, &swarm_port_info);
+        ide_device_add(idx, &swarm_port_info, hws);
 
         dev_set_drvdata(dev, hwif);
 
diff --git a/drivers/ide/pci/cmd640.c b/drivers/ide/pci/cmd640.c
index 1ad1e23e3105..ccde1e444e13 100644
--- a/drivers/ide/pci/cmd640.c
+++ b/drivers/ide/pci/cmd640.c
@@ -717,8 +717,8 @@ static int __init cmd640x_init(void)
         int second_port_cmd640 = 0, rc;
         const char *bus_type, *port2;
         u8 b, cfr;
+        hw_regs_t hw[2], *hws[] = { NULL, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
-        hw_regs_t hw[2];
 
         if (cmd640_vlb && probe_for_cmd640_vlb()) {
                 bus_type = "VLB";
@@ -787,7 +787,9 @@ static int __init cmd640x_init(void)
          * Initialize data for primary port
          */
         if (cmd_hwif0) {
-                ide_init_port_hw(cmd_hwif0, &hw[0]);
+                cmd_hwif0->chipset = ide_cmd640;
+
+                hws[0] = &hw[0];
                 idx[0] = cmd_hwif0->index;
         }
 
@@ -832,7 +834,7 @@ static int __init cmd640x_init(void)
         if (second_port_cmd640) {
                 cmd_hwif1 = ide_find_port();
                 if (cmd_hwif1) {
-                        ide_init_port_hw(cmd_hwif1, &hw[1]);
+                        hws[1] = &hw[1];
                         idx[1] = cmd_hwif1->index;
                 }
         }
@@ -843,7 +845,7 @@ static int __init cmd640x_init(void)
         cmd640_dump_regs();
 #endif
 
-        ide_device_add(idx, &cmd640_port_info);
+        ide_device_add(idx, &cmd640_port_info, hws);
 
         return 1;
 }
diff --git a/drivers/ide/pci/cs5520.c b/drivers/ide/pci/cs5520.c
index 992b1cf8db69..a13f2bc0665c 100644
--- a/drivers/ide/pci/cs5520.c
+++ b/drivers/ide/pci/cs5520.c
@@ -146,6 +146,7 @@ static const struct ide_port_info cyrix_chipsets[] __devinitdata = {
 static int __devinit cs5520_init_one(struct pci_dev *dev, const struct pci_device_id *id)
 {
         const struct ide_port_info *d = &cyrix_chipsets[id->driver_data];
+        hw_regs_t hw[4], *hws[] = { NULL, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 
         ide_setup_pci_noise(dev, d);
@@ -168,9 +169,9 @@ static int __devinit cs5520_init_one(struct pci_dev *dev, const struct pci_devic
          *      do all the device setup for us
          */
 
-        ide_pci_setup_ports(dev, d, 14, &idx[0]);
+        ide_pci_setup_ports(dev, d, 14, &idx[0], &hw[0], &hws[0]);
 
-        ide_device_add(idx, d);
+        ide_device_add(idx, d, hws);
 
         return 0;
 }
diff --git a/drivers/ide/pci/delkin_cb.c b/drivers/ide/pci/delkin_cb.c
index 0106e2a2df77..33fe15db408a 100644
--- a/drivers/ide/pci/delkin_cb.c
+++ b/drivers/ide/pci/delkin_cb.c
@@ -57,9 +57,9 @@ static int __devinit
 delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
 {
         unsigned long base;
-        hw_regs_t hw;
         ide_hwif_t *hwif = NULL;
         int i, rc;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 
         rc = pci_enable_device(dev);
@@ -93,11 +93,9 @@ delkin_cb_probe (struct pci_dev *dev, const struct pci_device_id *id)
 
         i = hwif->index;
 
-        ide_init_port_hw(hwif, &hw);
-
         idx[0] = i;
 
-        ide_device_add(idx, &delkin_cb_port_info);
+        ide_device_add(idx, &delkin_cb_port_info, hws);
 
         pci_set_drvdata(dev, hwif);
 
diff --git a/drivers/ide/pci/scc_pata.c b/drivers/ide/pci/scc_pata.c
index 789c66dfbde5..328e2df66550 100644
--- a/drivers/ide/pci/scc_pata.c
+++ b/drivers/ide/pci/scc_pata.c
@@ -554,7 +554,7 @@ static int scc_ide_setup_pci_device(struct pci_dev *dev,
 {
         struct scc_ports *ports = pci_get_drvdata(dev);
         ide_hwif_t *hwif = NULL;
-        hw_regs_t hw;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
         int i;
 
@@ -568,11 +568,10 @@ static int scc_ide_setup_pci_device(struct pci_dev *dev,
         hw.irq = dev->irq;
         hw.dev = &dev->dev;
         hw.chipset = ide_pci;
-        ide_init_port_hw(hwif, &hw);
 
         idx[0] = hwif->index;
 
-        ide_device_add(idx, d);
+        ide_device_add(idx, d, hws);
 
         return 0;
 }
diff --git a/drivers/ide/pci/sgiioc4.c b/drivers/ide/pci/sgiioc4.c
index c79ff5b41088..76afa1f9c599 100644
--- a/drivers/ide/pci/sgiioc4.c
+++ b/drivers/ide/pci/sgiioc4.c
@@ -584,8 +584,8 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev)
         unsigned long bar0, cmd_phys_base, ctl;
         void __iomem *virt_base;
         ide_hwif_t *hwif;
+        hw_regs_t hw, *hws[] = { &hw, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
-        hw_regs_t hw;
         struct ide_port_info d = sgiioc4_port_info;
 
         /*  Get the CmdBlk and CtrlBlk Base Registers */
@@ -622,8 +622,6 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev)
         if (hwif == NULL)
                 goto err;
 
-        ide_init_port_hw(hwif, &hw);
-
         /* The IOC4 uses MMIO rather than Port IO. */
         default_hwif_mmiops(hwif);
 
@@ -634,7 +632,7 @@ sgiioc4_ide_setup_pci_device(struct pci_dev *dev)
 
         idx[0] = hwif->index;
 
-        if (ide_device_add(idx, &d))
+        if (ide_device_add(idx, &d, hws))
                 return -EIO;
 
         return 0;
diff --git a/drivers/ide/ppc/pmac.c b/drivers/ide/ppc/pmac.c
index 4e2944ee76d8..e68e33bb2c35 100644
--- a/drivers/ide/ppc/pmac.c
+++ b/drivers/ide/ppc/pmac.c
@@ -1010,6 +1010,7 @@ static int __devinit pmac_ide_setup_device(pmac_ide_hwif_t *pmif, hw_regs_t *hw)
         struct device_node *np = pmif->node;
         const int *bidp;
         ide_hwif_t *hwif;
+        hw_regs_t *hws[] = { hw, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
         struct ide_port_info d = pmac_port_info;
 
@@ -1095,11 +1096,9 @@ static int __devinit pmac_ide_setup_device(pmac_ide_hwif_t *pmif, hw_regs_t *hw)
         default_hwif_mmiops(hwif);
         hwif->OUTBSYNC = pmac_outbsync;
 
-        ide_init_port_hw(hwif, hw);
-
         idx[0] = hwif->index;
 
-        ide_device_add(idx, &d);
+        ide_device_add(idx, &d, hws);
 
         return 0;
 }
diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c
index 7ae6ae45331f..acb467c6f345 100644
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -289,6 +289,7 @@ static int ide_pci_check_iomem(struct pci_dev *dev, const struct ide_port_info *
  *      @d: IDE port info
  *      @port: port number
  *      @irq: PCI IRQ
+ *      @hw: hw_regs_t instance corresponding to this port
  *
  *      Perform the initial set up for the hardware interface structure. This
  *      is done per interface port rather than per PCI device. There may be
@@ -299,11 +300,11 @@ static int ide_pci_check_iomem(struct pci_dev *dev, const struct ide_port_info *
 
 static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev,
                                       const struct ide_port_info *d,
-                                      unsigned int port, int irq)
+                                      unsigned int port, int irq,
+                                      hw_regs_t *hw)
 {
         unsigned long ctl = 0, base = 0;
         ide_hwif_t *hwif;
-        struct hw_regs_s hw;
 
         if ((d->host_flags & IDE_HFLAG_ISA_PORTS) == 0) {
                 if (ide_pci_check_iomem(dev, d, 2 * port) ||
@@ -327,17 +328,17 @@ static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev,
                 return NULL;
         }
 
+        memset(hw, 0, sizeof(*hw));
+        hw->irq = irq;
+        hw->dev = &dev->dev;
+        hw->chipset = d->chipset ? d->chipset : ide_pci;
+        ide_std_init_ports(hw, base, ctl | 2);
+
         hwif = ide_find_port_slot(d);
         if (hwif == NULL)
                 return NULL;
 
-        memset(&hw, 0, sizeof(hw));
-        hw.irq = irq;
-        hw.dev = &dev->dev;
-        hw.chipset = d->chipset ? d->chipset : ide_pci;
-        ide_std_init_ports(&hw, base, ctl | 2);
-
-        ide_init_port_hw(hwif, &hw);
+        hwif->chipset = hw->chipset;
 
         return hwif;
 }
@@ -430,6 +431,8 @@ out:
  *      @d: IDE port info
  *      @pciirq: IRQ line
  *      @idx: ATA index table to update
+ *      @hw: hw_regs_t instances corresponding to this PCI IDE device
+ *      @hws: hw_regs_t pointers table to update
  *
  *      Scan the interfaces attached to this device and do any
  *      necessary per port setup. Attach the devices and ask the
@@ -440,7 +443,8 @@ out:
  *      where the chipset setup is not the default PCI IDE one.
  */
 
-void ide_pci_setup_ports(struct pci_dev *dev, const struct ide_port_info *d, int pciirq, u8 *idx)
+void ide_pci_setup_ports(struct pci_dev *dev, const struct ide_port_info *d,
+                         int pciirq, u8 *idx, hw_regs_t *hw, hw_regs_t **hws)
 {
         int channels = (d->host_flags & IDE_HFLAG_SINGLE) ? 1 : 2, port;
         ide_hwif_t *hwif;
@@ -459,10 +463,11 @@ void ide_pci_setup_ports(struct pci_dev *dev, const struct ide_port_info *d, int
                         continue;       /* port not enabled */
                 }
 
-                hwif = ide_hwif_configure(dev, d, port, pciirq);
+                hwif = ide_hwif_configure(dev, d, port, pciirq, hw + port);
                 if (hwif == NULL)
                         continue;
 
+                *(hws + port) = hw + port;
                 *(idx + port) = hwif->index;
         }
 }
@@ -537,15 +542,16 @@ out:
 int ide_setup_pci_device(struct pci_dev *dev, const struct ide_port_info *d)
 {
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
+        hw_regs_t hw[4], *hws[] = { NULL, NULL, NULL, NULL };
         int ret;
 
         ret = do_ide_setup_pci_device(dev, d, 1);
 
         if (ret >= 0) {
                 /* FIXME: silent failure can happen */
-                ide_pci_setup_ports(dev, d, ret, &idx[0]);
+                ide_pci_setup_ports(dev, d, ret, &idx[0], &hw[0], &hws[0]);
 
-                ide_device_add(idx, d);
+                ide_device_add(idx, d, hws);
         }
 
         return ret;
@@ -557,6 +563,7 @@ int ide_setup_pci_devices(struct pci_dev *dev1, struct pci_dev *dev2,
 {
         struct pci_dev *pdev[] = { dev1, dev2 };
         int ret, i;
+        hw_regs_t hw[4], *hws[] = { NULL, NULL, NULL, NULL };
         u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
 
         for (i = 0; i < 2; i++) {
@@ -570,10 +577,11 @@ int ide_setup_pci_devices(struct pci_dev *dev1, struct pci_dev *dev2,
                         goto out;
 
                 /* FIXME: silent failure can happen */
-                ide_pci_setup_ports(pdev[i], d, ret, &idx[i*2]);
+                ide_pci_setup_ports(pdev[i], d, ret, &idx[i*2], &hw[i*2],
+                                    &hws[i*2]);
         }
 
-        ide_device_add(idx, d);
+        ide_device_add(idx, d, hws);
 out:
         return ret;
 }
diff --git a/include/linux/ide.h b/include/linux/ide.h
index 4726126f5a59..f58548becac0 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -1000,7 +1000,8 @@ extern int __ide_pci_register_driver(struct pci_driver *driver, struct module *o
 #define ide_pci_register_driver(d) pci_register_driver(d)
 #endif
 
-void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int, u8 *);
+void ide_pci_setup_ports(struct pci_dev *, const struct ide_port_info *, int,
+                         u8 *, hw_regs_t *, hw_regs_t **);
 void ide_setup_pci_noise(struct pci_dev *, const struct ide_port_info *);
 
 #ifdef CONFIG_BLK_DEV_IDEDMA_PCI
@@ -1217,8 +1218,8 @@ void ide_undecoded_slave(ide_drive_t *);
 
 void ide_port_apply_params(ide_hwif_t *);
 
-int ide_device_add_all(u8 *idx, const struct ide_port_info *);
-int ide_device_add(u8 idx[4], const struct ide_port_info *);
+int ide_device_add_all(u8 *, const struct ide_port_info *, hw_regs_t **);
+int ide_device_add(u8 *, const struct ide_port_info *, hw_regs_t **);
 int ide_legacy_device_add(const struct ide_port_info *, unsigned long);
 void ide_port_unregister_devices(ide_hwif_t *);
 void ide_port_scan(ide_hwif_t *);