backlight: Allow properties to be passed at registration

Values such as max_brightness should be set before backlights are
registered, but the current API doesn't allow that. Add a parameter to
backlight_device_register and update drivers to ensure that they
set this correctly.

Signed-off-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: Richard Purdie <rpurdie@linux.intel.com>

1 files changed, 5 insertions, 2 deletions

diff --git a/drivers/video/backlight/jornada720_bl.c b/drivers/video/backlight/jornada720_bl.c
index db9071fc5665..2f177b3a4885 100644
--- a/drivers/video/backlight/jornada720_bl.c
+++ b/drivers/video/backlight/jornada720_bl.c
@@ -101,10 +101,14 @@ static const struct backlight_ops jornada_bl_ops = {
 
 static int jornada_bl_probe(struct platform_device *pdev)
 {
+        struct backlight_properties props;
         int ret;
         struct backlight_device *bd;
 
-        bd = backlight_device_register(S1D_DEVICENAME, &pdev->dev, NULL, &jornada_bl_ops);
+        memset(&props, 0, sizeof(struct backlight_properties));
+        props.max_brightness = BL_MAX_BRIGHT;
+        bd = backlight_device_register(S1D_DEVICENAME, &pdev->dev, NULL,
+                                       &jornada_bl_ops, &props);
 
         if (IS_ERR(bd)) {
                 ret = PTR_ERR(bd);
@@ -117,7 +121,6 @@ static int jornada_bl_probe(struct platform_device *pdev)
         /* note. make sure max brightness is set otherwise
            you will get seemingly non-related errors when
            trying to change brightness */
-        bd->props.max_brightness = BL_MAX_BRIGHT;
         jornada_bl_update_status(bd);
 
         platform_set_drvdata(pdev, bd);