IDE: Coding Style fixes to drivers/ide/ide-proc.c

[linux-2.6] / drivers / ide / ide-probe.c

diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index 6a196c27b0aa016ad044a78db16bebdedbfb51e0..875429728021fb9ba2c78bcbd9d3347588d7f48f 100644 (file)
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1444,6 +1444,54 @@ 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) {
+               i = (d && (d->host_flags & IDE_HFLAG_QD_2ND_PORT)) ? 1 : 0;
+
+               for (; 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;