ide: add ide_legacy_init_one() helper

Move the common code for primary/seconary port setup from
ide_legacy_device_add() to ide_legacy_init_one().

There should be no functional changes caused by this patch.

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

1 files changed, 33 insertions, 23 deletions

diff --git a/drivers/ide/ide-probe.c b/drivers/ide/ide-probe.c
index da6025cfa09a..e299c80c6a57 100644
--- a/drivers/ide/ide-probe.c
+++ b/drivers/ide/ide-probe.c
@@ -1630,40 +1630,50 @@ void ide_port_scan(ide_hwif_t *hwif)
 }
 EXPORT_SYMBOL_GPL(ide_port_scan);
 
-int ide_legacy_device_add(const struct ide_port_info *d, unsigned long config)
+static void ide_legacy_init_one(u8 *idx, hw_regs_t *hw, u8 port_no,
+                                const struct ide_port_info *d,
+                                unsigned long config)
 {
-        ide_hwif_t *hwif, *mate;
-        u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
-        hw_regs_t hw[2];
-
-        memset(&hw, 0, sizeof(hw));
+        ide_hwif_t *hwif;
+        unsigned long base, ctl;
+        int irq;
 
-        ide_std_init_ports(&hw[0], 0x1f0, 0x3f6);
-        hw[0].irq = 14;
+        if (port_no == 0) {
+                base = 0x1f0;
+                ctl  = 0x3f6;
+                irq  = 14;
+        } else {
+                base = 0x170;
+                ctl  = 0x376;
+                irq  = 15;
+        }
 
-        ide_std_init_ports(&hw[1], 0x170, 0x376);
-        hw[1].irq = 15;
+        ide_std_init_ports(hw, base, ctl);
+        hw->irq = irq;
 
         hwif = ide_find_port_slot(d);
         if (hwif) {
-                u8 j = (d->host_flags & IDE_HFLAG_QD_2ND_PORT) ? 1 : 0;
-
-                ide_init_port_hw(hwif, &hw[j]);
+                ide_init_port_hw(hwif, hw);
                 if (config)
                         hwif->config_data = config;
-                idx[j] = hwif->index;
+                idx[port_no] = hwif->index;
         }
+}
 
-        if (hwif == NULL && (d->host_flags & IDE_HFLAG_SINGLE))
-                return -ENOENT;
+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];
 
-        mate = ide_find_port_slot(d);
-        if (mate) {
-                ide_init_port_hw(mate, &hw[1]);
-                if (config)
-                        mate->config_data = config;
-                idx[1] = mate->index;
-        }
+        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);
+
+        if (idx[0] == 0xff && idx[1] == 0xff &&
+            (d->host_flags & IDE_HFLAG_SINGLE))
+                return -ENOENT;
 
         ide_device_add(idx, d);