[PATCH 03/10] drm/panel: elida-kd35t133: Use dev_err_probe() to simplify code

[Yuan Can]

In the probe path, dev_err() can be replaced with dev_err_probe()
which will check if error code is -EPROBE_DEFER and prints the
error name. It also sets the defer probe reason which can be
checked later through debugfs.

Signed-off-by: Yuan Can <yuan...@huawei.com>
---
 drivers/gpu/drm/panel/panel-elida-kd35t133.c | 18 ++++++------------
 1 file changed, 6 insertions(+), 12 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-elida-kd35t133.c 
b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
index eee714cf3f49..ffed705201af 100644
--- a/drivers/gpu/drm/panel/panel-elida-kd35t133.c
+++ b/drivers/gpu/drm/panel/panel-elida-kd35t133.c
@@ -257,20 +257,14 @@ static int kd35t133_probe(struct mipi_dsi_device *dsi)
        }
 
        ctx->vdd = devm_regulator_get(dev, "vdd");
-       if (IS_ERR(ctx->vdd)) {
-               ret = PTR_ERR(ctx->vdd);
-               if (ret != -EPROBE_DEFER)
-                       dev_err(dev, "Failed to request vdd regulator: %d\n", 
ret);
-               return ret;
-       }
+       if (IS_ERR(ctx->vdd))
+               return dev_err_probe(dev, PTR_ERR(ctx->vdd),
+                                    "Failed to request vdd regulator\n");
 
        ctx->iovcc = devm_regulator_get(dev, "iovcc");
-       if (IS_ERR(ctx->iovcc)) {
-               ret = PTR_ERR(ctx->iovcc);
-               if (ret != -EPROBE_DEFER)
-                       dev_err(dev, "Failed to request iovcc regulator: %d\n", 
ret);
-               return ret;
-       }
+       if (IS_ERR(ctx->iovcc))
+               return dev_err_probe(dev, PTR_ERR(ctx->iovcc),
+                                    "Failed to request iovcc regulator\n");
 
        ret = of_drm_get_panel_orientation(dev->of_node, &ctx->orientation);
        if (ret < 0) {
-- 
2.17.1