drm/panel: jh057n00900: Print error code on all DRM_DEV_ERROR()s

Most of them had these already but two mere missing. This eases
debugging.

Signed-off-by: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Link: https://patchwork.freedesktop.org/patch/msgid/6b237a570cb368dc4471fb8feb3a0441813cd576.1564146727.git.agx@sigxcpu.org

diff --git a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
index fed24c5..1037a20 100644 (file)
--- a/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
+++ b/drivers/gpu/drm/panel/panel-rocktech-jh057n00900.c
@@ -127,7 +127,7 @@ static int jh057n_init_sequence(struct jh057n *ctx)
 
        ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
        if (ret < 0) {
-               DRM_DEV_ERROR(dev, "Failed to exit sleep mode\n");
+               DRM_DEV_ERROR(dev, "Failed to exit sleep mode: %d\n", ret);
                return ret;
        }
        /* Panel is operational 120 msec after reset */
@@ -351,7 +351,9 @@ static int jh057n_probe(struct mipi_dsi_device *dsi)
 
        ret = mipi_dsi_attach(dsi);
        if (ret < 0) {
-               DRM_DEV_ERROR(dev, "mipi_dsi_attach failed. Is host ready?\n");
+               DRM_DEV_ERROR(dev,
+                             "mipi_dsi_attach failed (%d). Is host ready?\n",
+                             ret);
                drm_panel_remove(&ctx->panel);
                return ret;
        }