On 2/23/20 4:07 PM, Heiko Stuebner wrote:
+static int kd35t133_unprepare(struct drm_panel *panel)
+{
+ struct kd35t133 *ctx = panel_to_kd35t133(panel);
+ struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);
+ int ret;
+
+ if (!ctx->prepared)
+ return 0;
+
+ ret = mipi_dsi_dcs_set_display_off(dsi);
+ if (ret < 0)
+ DRM_DEV_ERROR(ctx->dev, "failed to set display off: %d\n",
+ ret);
+
+ mipi_dsi_dcs_enter_sleep_mode(dsi);
+ if (ret < 0) {
+ DRM_DEV_ERROR(ctx->dev, "failed to enter sleep mode: %d\n",
+ ret);
It looks like you forgot to assign the return value from
mipi_dsi_dcs_enter_sleep_mode() to ret.
+ return ret;
+ }
+
+ regulator_disable(ctx->iovcc);
+ regulator_disable(ctx->vdd);
+
+ ctx->prepared = false;
+
+ return 0;
+}
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