Den 24.01.2018 17.41, skrev Meghana Madhyastha:
Replace of_find_backlight_by_node and of the code around it
with of_find_backlight helper to avoid repetition of code.
Signed-off-by: Meghana Madhyastha <meghana.madhyastha@xxxxxxxxx>
---
Reviewed-by: Noralf Trønnes <noralf@xxxxxxxxxxx>
Changes in v19:
-Changed to devm version of of_find_backlight in omapdrm (patch 10)
-removed assigning pdev->dev to variable dev in omapdrm (patch 10)
drivers/gpu/drm/omapdrm/displays/panel-dpi.c | 25 +++++--------------------
1 file changed, 5 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c b/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
index ac9596251..b4a4006a2 100644
--- a/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
+++ b/drivers/gpu/drm/omapdrm/displays/panel-dpi.c
@@ -157,7 +157,6 @@ static int panel_dpi_probe_of(struct platform_device *pdev)
{
struct panel_drv_data *ddata = platform_get_drvdata(pdev);
struct device_node *node = pdev->dev.of_node;
- struct device_node *bl_node;
struct omap_dss_device *in;
int r;
struct display_timing timing;
@@ -183,19 +182,15 @@ static int panel_dpi_probe_of(struct platform_device *pdev)
if (IS_ERR(ddata->vcc_supply))
return PTR_ERR(ddata->vcc_supply);
- bl_node = of_parse_phandle(node, "backlight", 0);
- if (bl_node) {
- ddata->backlight = of_find_backlight_by_node(bl_node);
- of_node_put(bl_node);
+ ddata->backlight = devm_of_find_backlight(&pdev->dev);
- if (!ddata->backlight)
- return -EPROBE_DEFER;
- }
+ if (IS_ERR(ddata->backlight))
+ return PTR_ERR(ddata->backlight);
r = of_get_display_timing(node, "panel-timing", &timing);
if (r) {
dev_err(&pdev->dev, "failed to get video timing\n");
- goto error_free_backlight;
+ return r;
}
videomode_from_timing(&timing, &ddata->vm);
@@ -203,19 +198,12 @@ static int panel_dpi_probe_of(struct platform_device *pdev)
in = omapdss_of_find_source_for_first_ep(node);
if (IS_ERR(in)) {
dev_err(&pdev->dev, "failed to find video source\n");
- r = PTR_ERR(in);
- goto error_free_backlight;
+ return PTR_ERR(in);
}
ddata->in = in;
return 0;
-
-error_free_backlight:
- if (ddata->backlight)
- put_device(&ddata->backlight->dev);
-
- return r;
}
static int panel_dpi_probe(struct platform_device *pdev)
@@ -270,9 +258,6 @@ static int __exit panel_dpi_remove(struct platform_device *pdev)
omap_dss_put_device(in);
- if (ddata->backlight)
- put_device(&ddata->backlight->dev);
-
return 0;
}
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