If the driver is built as a module, autoload won't work because the module alias information is not filled. So user-space can't match the registered device with the corresponding module.
Export the module alias information using the MODULE_DEVICE_TABLE() macro. Before this patch: $ modinfo drivers/spi/spi-ath79.ko | grep alias alias: platform:ath79-spi After this patch: $ modinfo drivers/spi/spi-ath79.ko | grep alias alias: platform:ath79-spi alias: of:N*T*Cqca,ar7100-spiC* alias: of:N*T*Cqca,ar7100-spi Signed-off-by: Javier Martinez Canillas <[email protected]> --- drivers/spi/spi-ath79.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/spi/spi-ath79.c b/drivers/spi/spi-ath79.c index 6165bf21d427..f369174fbd88 100644 --- a/drivers/spi/spi-ath79.c +++ b/drivers/spi/spi-ath79.c @@ -304,6 +304,7 @@ static const struct of_device_id ath79_spi_of_match[] = { { .compatible = "qca,ar7100-spi", }, { }, }; +MODULE_DEVICE_TABLE(of, ath79_spi_of_match); static struct platform_driver ath79_spi_driver = { .probe = ath79_spi_probe, -- 2.7.4
