Print a message when the HDMI I2C slave encoder can't be found to help
debugging probe deferral issues.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@xxxxxxxxxxxxxxxx>
---
drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c b/drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c
index 00fea7e6b378..cb892eefc723 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c
+++ b/drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c
@@ -131,12 +131,19 @@ int rcar_du_hdmienc_init(struct rcar_du_device *rcdu,
/* Locate the slave I2C device and driver. */
i2c_slave = of_find_i2c_device_by_node(np);
- if (!i2c_slave || !i2c_get_clientdata(i2c_slave))
+ if (!i2c_slave || !i2c_get_clientdata(i2c_slave)) {
+ dev_dbg(rcdu->dev,
+ "can't get I2C slave for %s, deferring probe\n",
+ of_node_full_name(np));
return -EPROBE_DEFER;
+ }
hdmienc->dev = &i2c_slave->dev;
if (hdmienc->dev->driver == NULL) {
+ dev_dbg(rcdu->dev,
+ "I2C slave %s not probed yet, deferring probe\n",
+ dev_name(hdmienc->dev));
ret = -EPROBE_DEFER;
goto error;
}
--
Regards,
Laurent Pinchart
_______________________________________________
dri-devel mailing list
dri-devel@xxxxxxxxxxxxxxxxxxxxx
http://lists.freedesktop.org/mailman/listinfo/dri-devel
