1 files changed, 17 insertions, 1 deletions

diff --git a/drivers/ide/legacy/ide-4drives.c b/drivers/ide/legacy/ide-4drives.c
index c352f12348af..17f94d0cb539 100644
--- a/drivers/ide/legacy/ide-4drives.c
+++ b/drivers/ide/legacy/ide-4drives.c
@@ -4,6 +4,8 @@
 #include <linux/module.h>
 #include <linux/ide.h>
 
+#define DRV_NAME "ide-4drives"
+
 int probe_4drives;
 
 module_param_named(probe, probe_4drives, bool, 0);
@@ -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;