diff -u -X /usr/dontdiff /linux.vanilla/drivers/char/logibusmouse.c /linux/drivers/char/logibusmouse.c
--- /linux.vanilla/drivers/char/logibusmouse.c	Tue Jun 12 10:51:30 2001
+++ /linux/drivers/char/logibusmouse.c	Tue Jun 12 11:35:28 2001
@@ -116,8 +116,9 @@
 
 static int open_mouse(struct inode * inode, struct file * file)
 {
-	if (request_irq(mouse_irq, mouse_interrupt, 0, "busmouse", NULL))
-		return -EBUSY;
+	int retval;
+	if ((retval = request_irq(mouse_irq, mouse_interrupt, SA_INTERRUPT | SA_SAMPLE_RANDOM, "busmouse", NULL)))
+		return retval;
 	MSE_INT_ON();
 	return 0;
 }
@@ -128,24 +129,25 @@
 
 static int __init logi_busmouse_init(void)
 {
-	if (check_region(LOGIBM_BASE, LOGIBM_EXTENT))
-		return -EIO;
+	if (!request_region(LOGIBM_BASE, LOGIBM_EXTENT, "busmouse"))
+		return -EBUSY;
 
 	outb(MSE_CONFIG_BYTE, MSE_CONFIG_PORT);
 	outb(MSE_SIGNATURE_BYTE, MSE_SIGNATURE_PORT);
 	udelay(100L);	/* wait for reply from mouse */
-	if (inb(MSE_SIGNATURE_PORT) != MSE_SIGNATURE_BYTE)
+	if (inb(MSE_SIGNATURE_PORT) != MSE_SIGNATURE_BYTE) {
+		release_region(LOGIBM_BASE, LOGIBM_EXTENT);
 		return -EIO;
+	}
 
 	outb(MSE_DEFAULT_MODE, MSE_CONFIG_PORT);
 	MSE_INT_OFF();
-	
-	request_region(LOGIBM_BASE, LOGIBM_EXTENT, "busmouse");
 
 	msedev = register_busmouse(&busmouse);
-	if (msedev < 0)
+	if (msedev < 0) {
 		printk(KERN_WARNING "Unable to register busmouse driver.\n");
-	else
+		release_region(LOGIBM_BASE, LOGIBM_EXTENT);
+	} else
 		printk(KERN_INFO "Logitech busmouse installed.\n");
 	return msedev < 0 ? msedev : 0;
 }