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gpu: ipu-v3: default to id 0 on missing OF alias

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[ Upstream commit 2d87e6c1b99c402360fdfe19ce4f579ab2f96adf ]

This is better than storing -ENODEV in the id number. This fixes SoCs
with only one IPU that don't specify an IPU alias in the device tree.

Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Philipp Zabel 2018-06-21 21:13:38 +02:00 committed by Greg Kroah-Hartman
parent 3b99098965
commit 8e6ee30ad8
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/ipu-v3/ipu-common.c
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@ -1401,6 +1401,8 @@ static int ipu_probe(struct platform_device *pdev)
return -ENODEV;
ipu->id = of_alias_get_id(np, "ipu");
if (ipu->id < 0)
ipu->id = 0;
if (of_device_is_compatible(np, "fsl,imx6qp-ipu") &&
IS_ENABLED(CONFIG_DRM)) {