[PATCH 4/4] spi: ath79: Fix module autoload for OF registration

From: Javier Martinez Canillas
Date: Wed Nov 23 2016 - 11:37:54 EST


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 <javier@xxxxxxxxxxxxxxx>

---

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