From: Crestez Dan Leonard <leonard.crestez@xxxxxxxxx> When using devicetree spi_device.modalias is set to the compatible string with the vendor prefix removed. For SPI devices described via ACPI the spi_device.modalias string is initialized by acpi_device_hid. When using ACPI and DT ids this string ends up something like "PRP0001". Change acpi_register_spi_device to use the of_compatible property if present. This makes it easier to instantiate spi drivers through ACPI with DT ids. Signed-off-by: Crestez Dan Leonard <leonard.crestez@xxxxxxxxx> Signed-off-by: Dan O'Donovan <dan@xxxxxxxxxx> Reviewed-by: Andy Shevchenko <andy.shevchenko@xxxxxxxxx> Reviewed-by: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx> Tested-by: Jarkko Nikula <jarkko.nikula@xxxxxxxxxxxxxxx> --- drivers/spi/spi.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/drivers/spi/spi.c b/drivers/spi/spi.c index 656dd3e..9a8c880 100644 --- a/drivers/spi/spi.c +++ b/drivers/spi/spi.c @@ -1722,13 +1722,20 @@ static acpi_status acpi_register_spi_device(struct spi_master *master, return AE_OK; } + /* + * Populate modalias from compatible property if available, + * otherwise use native ACPI information + */ + if (acpi_of_modalias(adev, spi->modalias, sizeof(spi->modalias))) + strlcpy(spi->modalias, acpi_device_hid(adev), + sizeof(spi->modalias)); + if (spi->irq < 0) spi->irq = acpi_dev_gpio_irq_get(adev, 0); acpi_device_set_enumerated(adev); adev->power.flags.ignore_parent = true; - strlcpy(spi->modalias, acpi_device_hid(adev), sizeof(spi->modalias)); if (spi_add_device(spi)) { adev->power.flags.ignore_parent = false; dev_err(&master->dev, "failed to add SPI device %s from ACPI\n", -- 2.7.4 -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html