drm/vc4: hdmi: Silence pixel clock error on -EPROBE_DEFER

If the vc4 hdmi driver loads before the pixel clock is available we
see a spurious "*ERROR* Failed to get pixel clock" error.

Signed-off-by: James Hilliard <james.hilliard1@gmail.com>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20200525012859.267433-1-james.hilliard1@gmail.com

diff --git a/drivers/gpu/drm/vc4/vc4_hdmi.c b/drivers/gpu/drm/vc4/vc4_hdmi.c
index 625bfcf52dc4daabeda6dc0acf0313e30bfff4cd..15a11cd4de256a94cb528cc5a4d2770b7726af0b 100644 (file)
--- a/drivers/gpu/drm/vc4/vc4_hdmi.c
+++ b/drivers/gpu/drm/vc4/vc4_hdmi.c
@@ -1330,8 +1330,10 @@ static int vc4_hdmi_bind(struct device *dev, struct device *master, void *data)
 
        hdmi->pixel_clock = devm_clk_get(dev, "pixel");
        if (IS_ERR(hdmi->pixel_clock)) {
-               DRM_ERROR("Failed to get pixel clock\n");
-               return PTR_ERR(hdmi->pixel_clock);
+               ret = PTR_ERR(hdmi->pixel_clock);
+               if (ret != -EPROBE_DEFER)
+                       DRM_ERROR("Failed to get pixel clock\n");
+               return ret;
        }
        hdmi->hsm_clock = devm_clk_get(dev, "hdmi");
        if (IS_ERR(hdmi->hsm_clock)) {