drm/stm: dsi: stm mipi dsi doesn't print error on probe deferral

Change DSI driver to not print an error trace when probe
is deferred for a clock resource.

Signed-off-by: Etienne Carriere <etienne.carriere@st.com>
Reviewed-by: Philippe Cornu <philippe.cornu@st.com>
Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com>
Link: https://patchwork.freedesktop.org/patch/msgid/1579602245-7577-1-git-send-email-yannick.fertre@st.com

diff --git a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
index 4b16563..2e1f266 100644 (file)
--- a/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
+++ b/drivers/gpu/drm/stm/dw_mipi_dsi-stm.c
@@ -377,7 +377,9 @@ static int dw_mipi_dsi_stm_probe(struct platform_device *pdev)
        dsi->pllref_clk = devm_clk_get(dev, "ref");
        if (IS_ERR(dsi->pllref_clk)) {
                ret = PTR_ERR(dsi->pllref_clk);
-               DRM_ERROR("Unable to get pll reference clock: %d\n", ret);
+               if (ret != -EPROBE_DEFER)
+                       DRM_ERROR("Unable to get pll reference clock: %d\n",
+                                 ret);
                goto err_clk_get;
        }