diff options
| author | Andy Yan <andy.yan@rock-chips.com> | 2014-12-05 14:24:28 +0800 |
|---|---|---|
| committer | Philipp Zabel <p.zabel@pengutronix.de> | 2015-01-06 17:36:15 +0100 |
| commit | c2c3848851a723a0e5e0fec22df395a885edf459 (patch) | |
| tree | 83b99f299c5491c461145ebdfd3f54805b4c9f09 | |
| parent | b587833933de39e21b314e3b392ac0f1ec94a97e (diff) | |
| download | blackbird-op-linux-c2c3848851a723a0e5e0fec22df395a885edf459.tar.gz blackbird-op-linux-c2c3848851a723a0e5e0fec22df395a885edf459.zip | |
drm: imx: imx-hdmi: return defer if can't get ddc i2c adapter
drm driver may probe before the i2c bus, so the driver should
defer probing until it is available
Signed-off-by: Andy Yan <andy.yan@rock-chips.com>
Reviewed-by: Daniel Kurtz <djkurtz@chromium.org>
Tested-by: Russell King <rmk+kernel@arm.linux.org.uk>
Acked-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
| -rw-r--r-- | drivers/gpu/drm/imx/imx-hdmi.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/gpu/drm/imx/imx-hdmi.c b/drivers/gpu/drm/imx/imx-hdmi.c index 3f96a5e6670d..3118dde3ea62 100644 --- a/drivers/gpu/drm/imx/imx-hdmi.c +++ b/drivers/gpu/drm/imx/imx-hdmi.c @@ -1611,10 +1611,12 @@ static int imx_hdmi_bind(struct device *dev, struct device *master, void *data) ddc_node = of_parse_phandle(np, "ddc-i2c-bus", 0); if (ddc_node) { hdmi->ddc = of_find_i2c_adapter_by_node(ddc_node); - if (!hdmi->ddc) + of_node_put(ddc_node); + if (!hdmi->ddc) { dev_dbg(hdmi->dev, "failed to read ddc node\n"); + return -EPROBE_DEFER; + } - of_node_put(ddc_node); } else { dev_dbg(hdmi->dev, "no ddc property found\n"); } |
