lxfb: add power management functionality

[linux-2.6] / drivers / ide / legacy / ide-4drives.c

diff --git a/drivers/ide/legacy/ide-4drives.c b/drivers/ide/legacy/ide-4drives.c
index c352f12348af944bbdb512af53e923c950389bc6..ecae916a3385f15c8725199a3eb18fe3733a79e4 100644 (file)
--- a/drivers/ide/legacy/ide-4drives.c
+++ b/drivers/ide/legacy/ide-4drives.c
@@ -4,7 +4,9 @@
 #include <linux/module.h>
 #include <linux/ide.h>
 
-int probe_4drives;
+#define DRV_NAME "ide-4drives"
+
+static int probe_4drives;
 
 module_param_named(probe, probe_4drives, bool, 0);
 MODULE_PARM_DESC(probe, "probe for generic IDE chipset with 4 drives/port");
@@ -12,15 +14,29 @@ MODULE_PARM_DESC(probe, "probe for generic IDE chipset with 4 drives/port");
 static int __init ide_4drives_init(void)
 {
        ide_hwif_t *hwif, *mate;
+       unsigned long base = 0x1f0, ctl = 0x3f6;
        u8 idx[4] = { 0xff, 0xff, 0xff, 0xff };
        hw_regs_t hw;
 
        if (probe_4drives == 0)
                return -ENODEV;
 
+       if (!request_region(base, 8, DRV_NAME)) {
+               printk(KERN_ERR "%s: I/O resource 0x%lX-0x%lX not free.\n",
+                               DRV_NAME, base, base + 7);
+               return -EBUSY;
+       }
+
+       if (!request_region(ctl, 1, DRV_NAME)) {
+               printk(KERN_ERR "%s: I/O resource 0x%lX not free.\n",
+                               DRV_NAME, ctl);
+               release_region(base, 8);
+               return -EBUSY;
+       }
+
        memset(&hw, 0, sizeof(hw));
 
-       ide_std_init_ports(&hw, 0x1f0, 0x3f6);
+       ide_std_init_ports(&hw, base, ctl);
        hw.irq = 14;
        hw.chipset = ide_4drives;