On Mon, 2007-02-26 at 15:26 -0300, Henrique de Moraes Holschuh wrote:
> Improve the backlight code to emulate as much as possible the power
> management events, as we are unable to really power on or power off the
> backlight.
>
> Signed-off-by: Henrique de Moraes Holschuh <[EMAIL PROTECTED]>
Acked-by: Richard Purdie <[EMAIL PROTECTED]>
>
> drivers/acpi/ibm_acpi.c | 6 +++++-
> 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 = {
-
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