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commit 597c1ffffd61a15a334ce42f2a569c59f0270bcb
Author: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Date:   Thu Feb 25 02:25:18 2010 -0800

    Fix incorrect arguments to ioperm() call
    
    The second argument of ioperm() is not the last port to be accessed
    but rather length of the port range [port, port + len).
    
    Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
    Signed-off-by: Martin Pitt <martin.pitt@ubuntu.com>

diff --git a/hald/linux/addons/addon-imac-backlight.c b/hald/linux/addons/addon-imac-backlight.c
index e869192..54e4ea3 100644
--- a/hald/linux/addons/addon-imac-backlight.c
+++ b/hald/linux/addons/addon-imac-backlight.c
@@ -158,7 +158,8 @@ main (int argc, char **argv)
 		goto out;
 	}
 
-	if (ioperm(0xB2, 0xB3, 1) < 0)
+	/* Allow access to ports 0xB2 and 0xB3 */
+	if (ioperm(0xB2, 2, 1) < 0)
 	{
 		HAL_ERROR (("ioperm failed (you should be root)."));
 		exit(1);
diff --git a/hald/linux/addons/addon-macbookpro-backlight.c b/hald/linux/addons/addon-macbookpro-backlight.c
index 2a6fef6..c1bbbac 100644
--- a/hald/linux/addons/addon-macbookpro-backlight.c
+++ b/hald/linux/addons/addon-macbookpro-backlight.c
@@ -507,7 +507,8 @@ main (int argc, char *argv[])
  	state = INREG(0x7ae4);
  	OUTREG(0x7ae4, state);
 
-	if (ioperm (0x300, 0x304, 1) < 0) {
+	/* Allow access to porta 0x300 through 0x304 */
+	if (ioperm (0x300, 5, 1) < 0) {
 		HAL_ERROR (("ioperm failed (you should be root)."));
 		exit(1);
 	}