sony-laptop: fix bogus error message display on resume

sony_backlight_update_status returns 0 on success -1 on failure (i.e.: the
return value from acpi_callsetfunc. The return value in the resume path
was broken and thus always displaying a bogus warning about not being able
to restore the brightness level.

Signed-off-by: Mattia Dongili <malattia@linux.it>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/drivers/platform/x86/sony-laptop.c b/drivers/platform/x86/sony-laptop.c
index 3541ca097d09..d93cff656c99 100644
--- a/drivers/platform/x86/sony-laptop.c
+++ b/drivers/platform/x86/sony-laptop.c
@@ -1041,7 +1041,7 @@ static int sony_nc_resume(struct acpi_device *device)
 
         /* set the last requested brightness level */
         if (sony_backlight_device &&
-                        !sony_backlight_update_status(sony_backlight_device))
+                        sony_backlight_update_status(sony_backlight_device) < 0)
                 printk(KERN_WARNING DRV_PFX "unable to restore brightness level\n");
 
         return 0;