sony-laptop: restore the last user requested brightness level on resume.

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

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/misc/sony-laptop.c b/drivers/misc/sony-laptop.c
index 14ee06c8f127..9a803e13c307 100644
--- a/drivers/misc/sony-laptop.c
+++ b/drivers/misc/sony-laptop.c
@@ -942,6 +942,11 @@ 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))
+                printk(KERN_WARNING DRV_PFX "unable to restore brightness level");
+
         /* re-initialize models with specific requirements */
         dmi_check_system(sony_nc_ids);