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| author |   Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2015-10-22 01:09:30 +0300 |
|---|---|---|
| committer | Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com> | 2016-02-23 09:34:33 +0200 |
| commit | fee8abc3bcb1fc34370cb3595d9c474b2d25a6b3 (patch) | |
| tree | 2e3799437bf0f9c5be63c60f6bedeb64935e9e06 /drivers/gpu/drm/rcar-du | |
| parent | drm: rcar-du: lvds: Add R-Car Gen3 support (diff) | |
| download | linux-dev-fee8abc3bcb1fc34370cb3595d9c474b2d25a6b3.tar.xz linux-dev-fee8abc3bcb1fc34370cb3595d9c474b2d25a6b3.zip | |
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: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Diffstat (limited to 'drivers/gpu/drm/rcar-du')
| -rw-r--r-- | drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c b/drivers/gpu/drm/rcar-du/rcar_du_hdmienc.c index 065b3a1d6134..461662d231e2 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; } |