ide: merge ide_match_hwif() and ide_find_port()

* Change ide_match_hwif() argument from 'u8 bootable' to
  'struct ide_port_info *d'.

* Move ide_match_hwif() to ide-probe.c from setup-pci.c and rename
  it to ide_find_port_slot().  Update some comments while at it.

* ide_find_port() can be now just a wrapper for ide_find_port_slot().

There should be no functional changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

4 files changed, 54 insertions, 63 deletions

diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 6a196c27b0aa..f81793f3f247 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1444,6 +1444,52 @@ static int ide_sysfs_register_port(ide_hwif_t *hwif)
         return rc;
 }
 
+/**
+ *      ide_find_port_slot      -       find free ide_hwifs[] slot
+ *      @d: IDE port info
+ *
+ *      Return the new hwif.  If we are out of free slots return NULL.
+ */
+
+ide_hwif_t *ide_find_port_slot(const struct ide_port_info *d)
+{
+        ide_hwif_t *hwif;
+        int i;
+        u8 bootable = (d && (d->host_flags & IDE_HFLAG_NON_BOOTABLE)) ? 0 : 1;
+
+        /*
+         * Claim an unassigned slot.
+         *
+         * Give preference to claiming other slots before claiming ide0/ide1,
+         * just in case there's another interface yet-to-be-scanned
+         * which uses ports 0x1f0/0x170 (the ide0/ide1 defaults).
+         *
+         * Unless there is a bootable card that does not use the standard
+         * ports 0x1f0/0x170 (the ide0/ide1 defaults).
+         */
+        if (bootable) {
+                for (i = 0; i < MAX_HWIFS; i++) {
+                        hwif = &ide_hwifs[i];
+                        if (hwif->chipset == ide_unknown)
+                                return hwif;
+                }
+        } else {
+                for (i = 2; i < MAX_HWIFS; i++) {
+                        hwif = &ide_hwifs[i];
+                        if (hwif->chipset == ide_unknown)
+                                return hwif;
+                }
+                for (i = 0; i < 2 && i < MAX_HWIFS; i++) {
+                        hwif = &ide_hwifs[i];
+                        if (hwif->chipset == ide_unknown)
+                                return hwif;
+                }
+        }
+
+        return NULL;
+}
+EXPORT_SYMBOL_GPL(ide_find_port_slot);
+
 int ide_device_add_all(u8 *idx, const struct ide_port_info *d)
 {
         ide_hwif_t *hwif, *mate = NULL;
diff --git a/drivers/ide/ide.c b/drivers/ide/ide.c
index 4ca511156a11..f338fe96ff6d 100644
--- a/drivers/ide/ide.c
+++ b/drivers/ide/ide.c
@@ -232,21 +232,6 @@ static int ide_system_bus_speed(void)
         return pci_dev_present(pci_default) ? 33 : 50;
 }
 
-ide_hwif_t *ide_find_port(void)
-{
-        ide_hwif_t *hwif;
-        int i;
-
-        for (i = 0; i < MAX_HWIFS; i++) {
-                hwif = &ide_hwifs[i];
-                if (hwif->chipset == ide_unknown)
-                        return hwif;
-        }
-
-        return NULL;
-}
-EXPORT_SYMBOL_GPL(ide_find_port);
-
 static struct resource* hwif_request_region(ide_hwif_t *hwif,
                                             unsigned long addr, int num)
 {
diff --git a/drivers/ide/setup-pci.c b/drivers/ide/setup-pci.c
index 8947597e6bec..699c72947967 100644
--- a/drivers/ide/setup-pci.c
+++ b/drivers/ide/setup-pci.c
@@ -20,51 +20,6 @@
 #include <asm/io.h>
 #include <asm/irq.h>
 
-
-/**
- *      ide_match_hwif  -       find free ide_hwifs[] slot
- *      @bootable: bootable flag
- *
- *      Return the new hwif.  If we are out of free slots return NULL.
- */
-
-static ide_hwif_t *ide_match_hwif(u8 bootable)
-{
-        ide_hwif_t *hwif;
-        int h;
-
-        /*
-         * Claim an unassigned slot.
-         *
-         * Give preference to claiming other slots before claiming ide0/ide1,
-         * just in case there's another interface yet-to-be-scanned
-         * which uses ports 1f0/170 (the ide0/ide1 defaults).
-         *
-         * Unless there is a bootable card that does not use the standard
-         * ports 1f0/170 (the ide0/ide1 defaults). The (bootable) flag.
-         */
-        if (bootable) {
-                for (h = 0; h < MAX_HWIFS; ++h) {
-                        hwif = &ide_hwifs[h];
-                        if (hwif->chipset == ide_unknown)
-                                return hwif;    /* pick an unused entry */
-                }
-        } else {
-                for (h = 2; h < MAX_HWIFS; ++h) {
-                        hwif = ide_hwifs + h;
-                        if (hwif->chipset == ide_unknown)
-                                return hwif;    /* pick an unused entry */
-                }
-        }
-        for (h = 0; h < 2 && h < MAX_HWIFS; ++h) {
-                hwif = ide_hwifs + h;
-                if (hwif->chipset == ide_unknown)
-                        return hwif;    /* pick an unused entry */
-        }
-
-        return NULL;
-}
-
 /**
  *      ide_setup_pci_baseregs  -       place a PCI IDE controller native
  *      @dev: PCI device of interface to switch native
@@ -320,7 +275,6 @@ static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev,
 {
         unsigned long ctl = 0, base = 0;
         ide_hwif_t *hwif;
-        u8 bootable = (d->host_flags & IDE_HFLAG_NON_BOOTABLE) ? 0 : 1;
         struct hw_regs_s hw;
 
         if ((d->host_flags & IDE_HFLAG_ISA_PORTS) == 0) {
@@ -346,7 +300,7 @@ static ide_hwif_t *ide_hwif_configure(struct pci_dev *dev,
                 base = port ? 0x170 : 0x1f0;
         }
 
-        hwif = ide_match_hwif(bootable);
+        hwif = ide_find_port_slot(d);
         if (hwif == NULL) {
                 printk(KERN_ERR "%s: too many IDE interfaces, no room in "
                                 "table\n", d->name);
diff --git a/include/linux/ide.h b/include/linux/ide.h
index c6d4de60185a..2c43766ff344 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -170,7 +170,6 @@ typedef struct hw_regs_s {
         struct device   *dev;
 } hw_regs_t;
 
-struct hwif_s *ide_find_port(void);
 void ide_init_port_data(struct hwif_s *, unsigned int);
 void ide_init_port_hw(struct hwif_s *, hw_regs_t *);
 
@@ -809,6 +808,13 @@ extern	ide_hwif_t	ide_hwifs[];		/* master data repository */
 #endif
 extern int noautodma;
 
+ide_hwif_t *ide_find_port_slot(const struct ide_port_info *);
+
+static inline ide_hwif_t *ide_find_port(void)
+{
+        return ide_find_port_slot(NULL);
+}
+
 extern int ide_end_request (ide_drive_t *drive, int uptodate, int nrsecs);
 int ide_end_dequeued_request(ide_drive_t *drive, struct request *rq,
                              int uptodate, int nr_sectors);