This Linux kernel change "i2c: synquacer: fix enumeration of slave devices" is included in the Linux 5.1 release. This change is authored by Ard Biesheuvel <ard.biesheuvel [at] linaro.org> on Tue Apr 30 11:47:34 2019 +0200. The commit for this change in Linux stable tree is 95e0cf3 (patch).
i2c: synquacer: fix enumeration of slave devices 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: <[email protected]> # v4.19+ Signed-off-by: Ard Biesheuvel <[email protected]> Signed-off-by: Wolfram Sang <[email protected]>
There are 2 lines of Linux source code added/deleted in this change. Code changes to Linux kernel are as follows.
drivers/i2c/busses/i2c-synquacer.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/i2c/busses/i2c-synquacer.c b/drivers/i2c/busses/i2c-synquacer.c index d18b094..f14d4b3 100644 --- a/drivers/i2c/busses/i2c-synquacer.c +++ b/drivers/i2c/busses/i2c-synquacer.c @@ -597,6 +597,8 @@ static int synquacer_i2c_probe(struct platform_device *pdev) 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);