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Commit fee8abc3 authored by Laurent Pinchart's avatar Laurent Pinchart
Browse files

drm: rcar-du: Add probe deferral debug messages 



Print a message when the HDMI I2C slave encoder can't be found to help
debugging probe deferral issues.

Signed-off-by: default avatarLaurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
parent 6bc2e15c

drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c

+8 −1
Original line number Diff line number Diff line
@@ -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;

	}