patch-2.4.19 linux-2.4.19/drivers/char/msbusmouse.c

• Lines: 18
• Date: Fri Aug 2 17:39:43 2002
• Orig file: linux-2.4.18/drivers/char/msbusmouse.c
• Orig date: Thu Sep 13 15:21:32 2001

diff -urN linux-2.4.18/drivers/char/msbusmouse.c linux-2.4.19/drivers/char/msbusmouse.c
@@ -149,11 +149,15 @@
 	}
 	if (present == 0)
 		return -EIO;
+	if (!request_region(MS_MSE_CONTROL_PORT, 0x04, "MS Busmouse"))
+		return -EIO;
+	
 	MS_MSE_INT_OFF();
-	request_region(MS_MSE_CONTROL_PORT, 0x04, "MS Busmouse");
 	msedev = register_busmouse(&msbusmouse);
-	if (msedev < 0)
+	if (msedev < 0) {
 		printk(KERN_WARNING "Unable to register msbusmouse driver.\n");
+		release_region(MS_MSE_CONTROL_PORT, 0x04);
+	}
 	else
 		printk(KERN_INFO "Microsoft BusMouse detected and installed.\n");
 	return msedev < 0 ? msedev : 0;