[PATCH 09/10] drm/panel: s6d16d0: 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-samsung-s6d16d0.c | 9 +++------
 1 file changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/gpu/drm/panel/panel-samsung-s6d16d0.c 
b/drivers/gpu/drm/panel/panel-samsung-s6d16d0.c
index 008e2b0d6652..2900b2c879dc 100644
--- a/drivers/gpu/drm/panel/panel-samsung-s6d16d0.c
+++ b/drivers/gpu/drm/panel/panel-samsung-s6d16d0.c
@@ -193,12 +193,9 @@ static int s6d16d0_probe(struct mipi_dsi_device *dsi)
        /* This asserts RESET by default */
        s6->reset_gpio = devm_gpiod_get_optional(dev, "reset",
                                                 GPIOD_OUT_HIGH);
-       if (IS_ERR(s6->reset_gpio)) {
-               ret = PTR_ERR(s6->reset_gpio);
-               if (ret != -EPROBE_DEFER)
-                       dev_err(dev, "failed to request GPIO (%d)\n", ret);
-               return ret;
-       }
+       if (IS_ERR(s6->reset_gpio))
+               return dev_err_probe(dev, PTR_ERR(s6->reset_gpio),
+                                    "failed to request GPIO\n");
 
        drm_panel_init(&s6->panel, dev, &s6d16d0_drm_funcs,
                       DRM_MODE_CONNECTOR_DSI);
-- 
2.17.1