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

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>

diff --git a/drivers/gpu/ipu-v3/ipu-common.c b/drivers/gpu/ipu-v3/ipu-common.c
index 48685cddbad1b7218519841c58478e12333bb90e..c73bd003f845d4ad7efe935fc6bdfe6c149b6404 100644 (file)
--- a/drivers/gpu/ipu-v3/ipu-common.c
+++ b/drivers/gpu/ipu-v3/ipu-common.c
@@ -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)) {