aboutsummaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
-rw-r--r--drivers/acpi/ibm_acpi.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/acpi/ibm_acpi.c b/drivers/acpi/ibm_acpi.c
index e7309a6..3690136 100644
--- a/drivers/acpi/ibm_acpi.c
+++ b/drivers/acpi/ibm_acpi.c
@@ -86,6 +86,7 @@
#include <linux/proc_fs.h>
#include <linux/backlight.h>
+#include <linux/fb.h>
#include <asm/uaccess.h>
#include <linux/dmi.h>
@@ -1707,7 +1708,10 @@ static int brightness_write(char *buf)
static int brightness_update_status(struct backlight_device *bd)
{
- return brightness_set(bd->props.brightness);
+ return brightness_set(
+ (bd->props.fb_blank == FB_BLANK_UNBLANK &&
+ bd->props.power == FB_BLANK_UNBLANK) ?
+ bd->props.brightness : 0);
}
static struct backlight_ops ibm_backlight_data = {