drm/panel: jdi-lpm102a188a: Fix error code in jdi_panel_prepare()

If the mipi_dsi_dual() macro fails, the error code is stored in
dsi_ctx.accum_err.  Propagate that error back to the caller instead
of returning success as the current code does.

Fixes: a6adf47d30cc ("drm/panel: jdi-lpm102a188a: Fix bug and clean up driver")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Link: https://lore.kernel.org/r/aKcRfq8xBrFmhqmO@stanley.mountain

diff --git a/drivers/gpu/drm/panel/panel-jdi-lpm102a188a.c b/drivers/gpu/drm/panel/panel-jdi-lpm102a188a.c
index 83656bb4b0b2166f3b0ab5b14ba4ac5110c2248b..23462065d726b2498101d147edf1123dbfc3803e 100644 (file)
--- a/drivers/gpu/drm/panel/panel-jdi-lpm102a188a.c
+++ b/drivers/gpu/drm/panel/panel-jdi-lpm102a188a.c
@@ -233,8 +233,10 @@ static int jdi_panel_prepare(struct drm_panel *panel)
        mipi_dsi_dual(mipi_dsi_dcs_set_display_on_multi,
                      &dsi_ctx, jdi->link1, jdi->link2);
 
-       if (dsi_ctx.accum_err < 0)
+       if (dsi_ctx.accum_err < 0) {
+               err = dsi_ctx.accum_err;
                goto poweroff;
+       }
 
        jdi->link1->mode_flags &= ~MIPI_DSI_MODE_LPM;
        jdi->link2->mode_flags &= ~MIPI_DSI_MODE_LPM;