drm/panel: ili9881c: Make use of the helper function dev_err_probe()

When possible use dev_err_probe help to properly deal with the
PROBE_DEFER error, the benefit is that DEFER issue will be logged
in the devices_deferred debugfs file.
And using dev_err_probe() can reduce code size, and the error value
gets printed.

Signed-off-by: Cai Huoqing <caihuoqing@baidu.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20210916104240.11217-1-caihuoqing@baidu.com

diff --git a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
index 0145129d7c661ce0e9ca1f095faec49b758df9a3..f7520231abc398a1921c26d3dc734a7cd6feca81 100644 (file)
--- a/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
+++ b/drivers/gpu/drm/panel/panel-ilitek-ili9881c.c
@@ -653,16 +653,14 @@ static int ili9881c_dsi_probe(struct mipi_dsi_device *dsi)
                       DRM_MODE_CONNECTOR_DSI);
 
        ctx->power = devm_regulator_get(&dsi->dev, "power");
-       if (IS_ERR(ctx->power)) {
-               dev_err(&dsi->dev, "Couldn't get our power regulator\n");
-               return PTR_ERR(ctx->power);
-       }
+       if (IS_ERR(ctx->power))
+               return dev_err_probe(&dsi->dev, PTR_ERR(ctx->power),
+                                    "Couldn't get our power regulator\n");
 
        ctx->reset = devm_gpiod_get(&dsi->dev, "reset", GPIOD_OUT_LOW);
-       if (IS_ERR(ctx->reset)) {
-               dev_err(&dsi->dev, "Couldn't get our reset GPIO\n");
-               return PTR_ERR(ctx->reset);
-       }
+       if (IS_ERR(ctx->reset))
+               return dev_err_probe(&dsi->dev, PTR_ERR(ctx->reset),
+                                    "Couldn't get our reset GPIO\n");
 
        ret = drm_panel_of_backlight(&ctx->panel);
        if (ret)