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[3/4] PM / devfreq: rockchip-dfi: Fix module autoload

Message ID 1476911187-11040-4-git-send-email-javier@osg.samsung.com (mailing list archive)
State Not Applicable, archived
Delegated to: Rafael Wysocki
Headers show

Commit Message

Javier Martinez Canillas Oct. 19, 2016, 9:06 p.m. UTC
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/devfreq/event/rockchip-dfi.ko | grep alias
$

After this patch:

$ modinfo drivers/devfreq/event/rockchip-dfi.ko | grep alias
alias:          of:N*T*Crockchip,rk3399-dfiC*
alias:          of:N*T*Crockchip,rk3399-dfi

Signed-off-by: Javier Martinez Canillas <javier@osg.samsung.com>
---

 drivers/devfreq/event/rockchip-dfi.c | 1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/drivers/devfreq/event/rockchip-dfi.c b/drivers/devfreq/event/rockchip-dfi.c
index 43fcc5a7f515..22b113363ffc 100644
--- a/drivers/devfreq/event/rockchip-dfi.c
+++ b/drivers/devfreq/event/rockchip-dfi.c
@@ -188,6 +188,7 @@  static const struct of_device_id rockchip_dfi_id_match[] = {
 	{ .compatible = "rockchip,rk3399-dfi" },
 	{ },
 };
+MODULE_DEVICE_TABLE(of, rockchip_dfi_id_match);
 
 static int rockchip_dfi_probe(struct platform_device *pdev)
 {