From: Sam Ravnborg Date: Thu, 14 May 2020 19:09:45 +0000 (+0200) Subject: drm/tilcdc: use devm_of_find_backlight X-Git-Tag: v5.9-rc1~134^2~21^2~223 X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a18dc7401ab5c86de38f64ee6301a6bd3757f017;p=thirdparty%2Flinux.git drm/tilcdc: use devm_of_find_backlight Look up backlight device using devm_of_find_backlight(). This simplifies the code and prevents us from hardcoding the node name in the driver. Signed-off-by: Sam Ravnborg Reviewed-by: Tomi Valkeinen Cc: Jyri Sarha Cc: Tomi Valkeinen Link: https://patchwork.freedesktop.org/patch/msgid/20200514191001.457441-3-sam@ravnborg.org --- diff --git a/drivers/gpu/drm/tilcdc/tilcdc_panel.c b/drivers/gpu/drm/tilcdc/tilcdc_panel.c index 12823d60c4e89..b207b2f19d420 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_panel.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_panel.c @@ -299,7 +299,8 @@ put_node: static int panel_probe(struct platform_device *pdev) { - struct device_node *bl_node, *node = pdev->dev.of_node; + struct device_node *node = pdev->dev.of_node; + struct backlight_device *backlight; struct panel_module *panel_mod; struct tilcdc_module *mod; struct pinctrl *pinctrl; @@ -315,16 +316,10 @@ static int panel_probe(struct platform_device *pdev) if (!panel_mod) return -ENOMEM; - bl_node = of_parse_phandle(node, "backlight", 0); - if (bl_node) { - panel_mod->backlight = of_find_backlight_by_node(bl_node); - of_node_put(bl_node); - - if (!panel_mod->backlight) - return -EPROBE_DEFER; - - dev_info(&pdev->dev, "found backlight\n"); - } + backlight = devm_of_find_backlight(&pdev->dev); + if (IS_ERR(backlight)) + return PTR_ERR(backlight); + panel_mod->backlight = backlight; panel_mod->enable_gpio = devm_gpiod_get_optional(&pdev->dev, "enable", GPIOD_OUT_LOW);