[PATCH 4.8 67/92] clk: samsung: clk-exynos-audss: Fix module autoload

From: Greg Kroah-Hartman
Date: Thu Nov 17 2016 - 05:36:54 EST


4.8-stable review patch. If anyone has any objections, please let me know.

------------------

From: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>

commit 34b89b2967f284937be6759936ef3dc4d3aff2d0 upstream.

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/clk/samsung/clk-exynos-audss.ko | grep alias
alias: platform:exynos-audss-clk

After this patch:

$ modinfo drivers/clk/samsung/clk-exynos-audss.ko | grep alias
alias: platform:exynos-audss-clk
alias: of:N*T*Csamsung,exynos5420-audss-clockC*
alias: of:N*T*Csamsung,exynos5420-audss-clock
alias: of:N*T*Csamsung,exynos5410-audss-clockC*
alias: of:N*T*Csamsung,exynos5410-audss-clock
alias: of:N*T*Csamsung,exynos5250-audss-clockC*
alias: of:N*T*Csamsung,exynos5250-audss-clock
alias: of:N*T*Csamsung,exynos4210-audss-clockC*
alias: of:N*T*Csamsung,exynos4210-audss-clock

Fixes: 4d252fd5719b ("clk: samsung: Allow modular build of the Audio Subsystem CLKCON driver")
Signed-off-by: Javier Martinez Canillas <javier@xxxxxxxxxxxxxxx>
Reviewed-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Tested-by: Krzysztof Kozlowski <krzk@xxxxxxxxxx>
Signed-off-by: Stephen Boyd <sboyd@xxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
drivers/clk/samsung/clk-exynos-audss.c | 1 +
1 file changed, 1 insertion(+)

--- a/drivers/clk/samsung/clk-exynos-audss.c
+++ b/drivers/clk/samsung/clk-exynos-audss.c
@@ -82,6 +82,7 @@ static const struct of_device_id exynos_
.data = (void *)TYPE_EXYNOS5420, },
{},
};
+MODULE_DEVICE_TABLE(of, exynos_audss_clk_of_match);

static void exynos_audss_clk_teardown(void)
{