linux-kernel - Re: [PATCH] clk: samsung: clk-exynos-audss: Fix module autoload

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Date:   Sat, 15 Oct 2016 20:27:11 +0300
From:   Krzysztof Kozlowski <krzk@...nel.org>
To:     Javier Martinez Canillas <javier@....samsung.com>
Cc:     linux-kernel@...r.kernel.org, Kukjin Kim <kgene@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...eaurora.org>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        linux-clk@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
        Sylwester Nawrocki <s.nawrocki@...sung.com>,
        Tomasz Figa <tomasz.figa@...il.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH] clk: samsung: clk-exynos-audss: Fix module autoload

On Fri, Oct 14, 2016 at 03:44:05PM -0300, Javier Martinez Canillas wrote:
> 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
> 
> Signed-off-by: Javier Martinez Canillas <javier@....samsung.com>
> ---
> 
>  drivers/clk/samsung/clk-exynos-audss.c | 1 +
>  1 file changed, 1 insertion(+)

Indeed, this was missed by 4d252fd5719b thus I think it could be
mentioned as fix tag (just for reference...):
Fixes: 4d252fd5719b ("clk: samsung: Allow modular build of the Audio Subsystem CLKCON driver")

Anyway, this fixes the issue, so:
Reviewed-by: Krzysztof Kozlowski <krzk@...nel.org>
Tested-by: Krzysztof Kozlowski <krzk@...nel.org>

Best regards,
Krzysztof