[PATCH 4.19 04/99] i2c: synquacer: fix enumeration of slave devices

[Greg Kroah-Hartman]

From: Ard Biesheuvel <ard.biesheu...@linaro.org>

commit 95e0cf3caeb11e1b0398c747b5cfa12828263824 upstream.

The I2C host driver for SynQuacer fails to populate the of_node and
ACPI companion fields of the struct i2c_adapter it instantiates,
resulting in enumeration of the subordinate I2C bus to fail.

Fixes: 0d676a6c4390 ("i2c: add support for Socionext SynQuacer I2C controller")
Cc: <sta...@vger.kernel.org> # v4.19+
Signed-off-by: Ard Biesheuvel <ard.biesheu...@linaro.org>
Signed-off-by: Wolfram Sang <w...@the-dreams.de>
Signed-off-by: Greg Kroah-Hartman <gre...@linuxfoundation.org>

---
 drivers/i2c/busses/i2c-synquacer.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/i2c/busses/i2c-synquacer.c
+++ b/drivers/i2c/busses/i2c-synquacer.c
@@ -602,6 +602,8 @@ static int synquacer_i2c_probe(struct pl
        i2c->adapter = synquacer_i2c_ops;
        i2c_set_adapdata(&i2c->adapter, i2c);
        i2c->adapter.dev.parent = &pdev->dev;
+       i2c->adapter.dev.of_node = pdev->dev.of_node;
+       ACPI_COMPANION_SET(&i2c->adapter.dev, ACPI_COMPANION(&pdev->dev));
        i2c->adapter.nr = pdev->id;
        init_completion(&i2c->completion);