linux-kernel - Re: [PATCH] PM / clk: export symbols for existing pm_clk

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Date:	Mon, 6 Jun 2016 12:16:47 +0200
From:	Pavel Machek <pavel@....cz>
To:	Paul Gortmaker <paul.gortmaker@...driver.com>
Cc:	linux-kernel@...r.kernel.org,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Len Brown <len.brown@...el.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	Vinod Koul <vinod.koul@...el.com>,
	Jon Hunter <jonathanh@...dia.com>, linux-pm@...r.kernel.org
Subject: Re: [PATCH] PM / clk: export symbols for existing pm_clk_<...> API
 fcns

On Sun 2016-06-05 13:58:15, Paul Gortmaker wrote:
> While trying to convert a DMA driver from bool to tristate, we
> encountered the following:
> 
> ERROR: "pm_clk_add_clk" [drivers/dma/tegra210-adma.ko] undefined!
> ERROR: "pm_clk_create" [drivers/dma/tegra210-adma.ko] undefined!
> ERROR: "pm_clk_destroy" [drivers/dma/tegra210-adma.ko] undefined!
> ERROR: "pm_clk_suspend" [drivers/dma/tegra210-adma.ko] undefined!
> ERROR: "pm_clk_resume" [drivers/dma/tegra210-adma.ko] undefined!
> 
> Since in principle there is nothing preventing these functions
> from being used in modular code as well as builtin, we add the
> export of them.  We expand the scope to also include:
> 
>    pm_clk_add
>    of_pm_clk_add_clks
>    pm_clk_remove
>    pm_clk_remove_clk
>    pm_clk_init
>    pm_clk_runtime_suspend
>    pm_clk_runtime_resume
>    pm_clk_add_notifier
> 
> ...since these functions are also non-static and presumably form
> part of the existing API used by other drivers that may become
> modular in the future.
> 
> Cc: "Rafael J. Wysocki" <rjw@...ysocki.net>

Acked-by: Pavel Machek <pavel@....cz>

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