diff options
Diffstat (limited to 'drivers/video/backlight/as3711_bl.c')
| -rw-r--r-- | drivers/video/backlight/as3711_bl.c | 45 |
1 files changed, 29 insertions, 16 deletions
diff --git a/drivers/video/backlight/as3711_bl.c b/drivers/video/backlight/as3711_bl.c index 734a9158946b..ca544aa764b8 100644 --- a/drivers/video/backlight/as3711_bl.c +++ b/drivers/video/backlight/as3711_bl.c @@ -28,8 +28,6 @@ enum as3711_bl_type { struct as3711_bl_data { bool powered; - const char *fb_name; - struct device *fb_dev; enum as3711_bl_type type; int brightness; struct backlight_device *bl; @@ -262,10 +260,10 @@ static int as3711_bl_register(struct platform_device *pdev, static int as3711_backlight_parse_dt(struct device *dev) { struct as3711_bl_pdata *pdata = dev_get_platdata(dev); - struct device_node *bl = - of_find_node_by_name(dev->parent->of_node, "backlight"), *fb; + struct device_node *bl, *fb; int ret; + bl = of_get_child_by_name(dev->parent->of_node, "backlight"); if (!bl) { dev_dbg(dev, "backlight node not found\n"); return -ENODEV; @@ -273,26 +271,30 @@ static int as3711_backlight_parse_dt(struct device *dev) fb = of_parse_phandle(bl, "su1-dev", 0); if (fb) { - pdata->su1_fb = fb->full_name; + of_node_put(fb); + + pdata->su1_fb = true; ret = of_property_read_u32(bl, "su1-max-uA", &pdata->su1_max_uA); if (pdata->su1_max_uA <= 0) ret = -EINVAL; if (ret < 0) - return ret; + goto err_put_bl; } fb = of_parse_phandle(bl, "su2-dev", 0); if (fb) { int count = 0; - pdata->su2_fb = fb->full_name; + of_node_put(fb); + + pdata->su2_fb = true; ret = of_property_read_u32(bl, "su2-max-uA", &pdata->su2_max_uA); if (pdata->su2_max_uA <= 0) ret = -EINVAL; if (ret < 0) - return ret; + goto err_put_bl; if (of_find_property(bl, "su2-feedback-voltage", NULL)) { pdata->su2_feedback = AS3711_SU2_VOLTAGE; @@ -314,8 +316,10 @@ static int as3711_backlight_parse_dt(struct device *dev) pdata->su2_feedback = AS3711_SU2_CURR_AUTO; count++; } - if (count != 1) - return -EINVAL; + if (count != 1) { + ret = -EINVAL; + goto err_put_bl; + } count = 0; if (of_find_property(bl, "su2-fbprot-lx-sd4", NULL)) { @@ -334,8 +338,10 @@ static int as3711_backlight_parse_dt(struct device *dev) pdata->su2_fbprot = AS3711_SU2_GPIO4; count++; } - if (count != 1) - return -EINVAL; + if (count != 1) { + ret = -EINVAL; + goto err_put_bl; + } count = 0; if (of_find_property(bl, "su2-auto-curr1", NULL)) { @@ -355,11 +361,20 @@ static int as3711_backlight_parse_dt(struct device *dev) * At least one su2-auto-curr* must be specified iff * AS3711_SU2_CURR_AUTO is used */ - if (!count ^ (pdata->su2_feedback != AS3711_SU2_CURR_AUTO)) - return -EINVAL; + if (!count ^ (pdata->su2_feedback != AS3711_SU2_CURR_AUTO)) { + ret = -EINVAL; + goto err_put_bl; + } } + of_node_put(bl); + return 0; + +err_put_bl: + of_node_put(bl); + + return ret; } static int as3711_backlight_probe(struct platform_device *pdev) @@ -412,7 +427,6 @@ static int as3711_backlight_probe(struct platform_device *pdev) if (pdata->su1_fb) { su = &supply->su1; - su->fb_name = pdata->su1_fb; su->type = AS3711_BL_SU1; max_brightness = min(pdata->su1_max_uA, 31); @@ -423,7 +437,6 @@ static int as3711_backlight_probe(struct platform_device *pdev) if (pdata->su2_fb) { su = &supply->su2; - su->fb_name = pdata->su2_fb; su->type = AS3711_BL_SU2; switch (pdata->su2_fbprot) { |