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Date: Mon, 4 Jul 2016 23:36:53 +0200
From: Boris Brezillon <boris.brezillon@...e-electrons.com>
To: Paul Gortmaker <paul.gortmaker@...driver.com>
Cc: <linux-kernel@...r.kernel.org>, Chen-Yu Tsai <wens@...e.org>,
Emilio López <emilio@...pez.com.ar>,
Michael Turquette <mturquette@...libre.com>,
Stephen Boyd <sboyd@...eaurora.org>,
Maxime Ripard <maxime.ripard@...e-electrons.com>,
<linux-clk@...r.kernel.org>
Subject: Re: [PATCH 08/10] clk: sunxi: make clk-* explicitly non-modular
On Mon, 4 Jul 2016 17:12:18 -0400
Paul Gortmaker <paul.gortmaker@...driver.com> wrote:
> We have the following file --> Kconfig mapping:
>
> sunxi/clk-factors.c obj-y
> sunxi/clk-sun6i-apb0-gates.c CONFIG_MFD_SUN6I_PRCM (bool)
> sunxi/clk-sun6i-apb0.c CONFIG_MFD_SUN6I_PRCM
> sunxi/clk-sun6i-ar100.c CONFIG_MFD_SUN6I_PRCM
> sunxi/clk-sun8i-apb0.c CONFIG_MFD_SUN6I_PRCM
> sunxi/clk-sun9i-mmc.c obj-y
>
> Hence none of these are being built as a module by anyone.
>
> Lets remove the modular code that is essentially orphaned, so that
> when reading the drivers there is no doubt they are builtin-only. All
> drivers get mostly the same changes, so they are handled in batch.
>
> Changes are (1) convert to builtin_platform_register, (2) use the
> init.h header, (3) delete the MODULE_LICENCE/MODULE_AUTHOR and
> associated tags, and (4) delete any ".remove" functions.
>
> There was a stray module.h in a file not using any init.h or
> module.h stuff, so we simply removed that one.
>
> In two cases, we explicitly disallow a driver unbind, since that
> doesn't have a sensible use case anyway, and it allows us to drop
> the ".remove" code for non-modular drivers.
>
> Since module_platform_driver() uses the same init level priority as
> builtin_platform_driver() the init ordering remains unchanged with
> this commit.
>
> We delete the MODULE_LICENSE etc. tags since all that information
> is already contained at the top of each file in the comments.
>
> Cc: Boris BREZILLON <boris.brezillon@...e-electrons.com>
Acked-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
> Cc: Chen-Yu Tsai <wens@...e.org>
> Cc: "Emilio López" <emilio@...pez.com.ar>
> Cc: Michael Turquette <mturquette@...libre.com>
> Cc: Stephen Boyd <sboyd@...eaurora.org>
> Cc: Maxime Ripard <maxime.ripard@...e-electrons.com>
> Cc: linux-clk@...r.kernel.org
> Signed-off-by: Paul Gortmaker <paul.gortmaker@...driver.com>
> ---
> drivers/clk/sunxi/clk-factors.c | 1 -
> drivers/clk/sunxi/clk-sun6i-apb0-gates.c | 9 ++-------
> drivers/clk/sunxi/clk-sun6i-apb0.c | 9 ++-------
> drivers/clk/sunxi/clk-sun6i-ar100.c | 21 +++------------------
> drivers/clk/sunxi/clk-sun8i-apb0.c | 9 ++-------
> drivers/clk/sunxi/clk-sun9i-mmc.c | 28 +++-------------------------
> 6 files changed, 12 insertions(+), 65 deletions(-)
>
> diff --git a/drivers/clk/sunxi/clk-factors.c b/drivers/clk/sunxi/clk-factors.c
> index ddefe9668863..dfe5e3e32d28 100644
> --- a/drivers/clk/sunxi/clk-factors.c
> +++ b/drivers/clk/sunxi/clk-factors.c
> @@ -12,7 +12,6 @@
> #include <linux/delay.h>
> #include <linux/err.h>
> #include <linux/io.h>
> -#include <linux/module.h>
> #include <linux/of_address.h>
> #include <linux/slab.h>
> #include <linux/string.h>
> diff --git a/drivers/clk/sunxi/clk-sun6i-apb0-gates.c b/drivers/clk/sunxi/clk-sun6i-apb0-gates.c
> index 68021fa5ecd9..09cdb9874636 100644
> --- a/drivers/clk/sunxi/clk-sun6i-apb0-gates.c
> +++ b/drivers/clk/sunxi/clk-sun6i-apb0-gates.c
> @@ -9,7 +9,7 @@
> */
>
> #include <linux/clk-provider.h>
> -#include <linux/module.h>
> +#include <linux/init.h>
> #include <linux/of.h>
> #include <linux/of_device.h>
> #include <linux/platform_device.h>
> @@ -33,7 +33,6 @@ static const struct of_device_id sun6i_a31_apb0_gates_clk_dt_ids[] = {
> { .compatible = "allwinner,sun8i-a23-apb0-gates-clk", .data = &sun8i_a23_apb0_gates },
> { /* sentinel */ }
> };
> -MODULE_DEVICE_TABLE(of, sun6i_a31_apb0_gates_clk_dt_ids);
>
> static int sun6i_a31_apb0_gates_clk_probe(struct platform_device *pdev)
> {
> @@ -102,8 +101,4 @@ static struct platform_driver sun6i_a31_apb0_gates_clk_driver = {
> },
> .probe = sun6i_a31_apb0_gates_clk_probe,
> };
> -module_platform_driver(sun6i_a31_apb0_gates_clk_driver);
> -
> -MODULE_AUTHOR("Boris BREZILLON <boris.brezillon@...e-electrons.com>");
> -MODULE_DESCRIPTION("Allwinner A31 APB0 gate clocks driver");
> -MODULE_LICENSE("GPL v2");
> +builtin_platform_driver(sun6i_a31_apb0_gates_clk_driver);
> diff --git a/drivers/clk/sunxi/clk-sun6i-apb0.c b/drivers/clk/sunxi/clk-sun6i-apb0.c
> index e703e1895b76..b9c8d359288c 100644
> --- a/drivers/clk/sunxi/clk-sun6i-apb0.c
> +++ b/drivers/clk/sunxi/clk-sun6i-apb0.c
> @@ -9,7 +9,7 @@
> */
>
> #include <linux/clk-provider.h>
> -#include <linux/module.h>
> +#include <linux/init.h>
> #include <linux/of.h>
> #include <linux/platform_device.h>
>
> @@ -61,7 +61,6 @@ static const struct of_device_id sun6i_a31_apb0_clk_dt_ids[] = {
> { .compatible = "allwinner,sun6i-a31-apb0-clk" },
> { /* sentinel */ }
> };
> -MODULE_DEVICE_TABLE(of, sun6i_a31_apb0_clk_dt_ids);
>
> static struct platform_driver sun6i_a31_apb0_clk_driver = {
> .driver = {
> @@ -70,8 +69,4 @@ static struct platform_driver sun6i_a31_apb0_clk_driver = {
> },
> .probe = sun6i_a31_apb0_clk_probe,
> };
> -module_platform_driver(sun6i_a31_apb0_clk_driver);
> -
> -MODULE_AUTHOR("Boris BREZILLON <boris.brezillon@...e-electrons.com>");
> -MODULE_DESCRIPTION("Allwinner A31 APB0 clock Driver");
> -MODULE_LICENSE("GPL v2");
> +builtin_platform_driver(sun6i_a31_apb0_clk_driver);
> diff --git a/drivers/clk/sunxi/clk-sun6i-ar100.c b/drivers/clk/sunxi/clk-sun6i-ar100.c
> index 84a187e55360..64ca3e9e38e6 100644
> --- a/drivers/clk/sunxi/clk-sun6i-ar100.c
> +++ b/drivers/clk/sunxi/clk-sun6i-ar100.c
> @@ -10,7 +10,7 @@
>
> #include <linux/bitops.h>
> #include <linux/clk-provider.h>
> -#include <linux/module.h>
> +#include <linux/init.h>
> #include <linux/of.h>
> #include <linux/platform_device.h>
> #include <linux/spinlock.h>
> @@ -91,32 +91,17 @@ static int sun6i_a31_ar100_clk_probe(struct platform_device *pdev)
> return 0;
> }
>
> -static int sun6i_a31_ar100_clk_remove(struct platform_device *pdev)
> -{
> - struct device_node *np = pdev->dev.of_node;
> - struct clk *clk = platform_get_drvdata(pdev);
> -
> - sunxi_factors_unregister(np, clk);
> -
> - return 0;
> -}
> -
> static const struct of_device_id sun6i_a31_ar100_clk_dt_ids[] = {
> { .compatible = "allwinner,sun6i-a31-ar100-clk" },
> { /* sentinel */ }
> };
> -MODULE_DEVICE_TABLE(of, sun6i_a31_ar100_clk_dt_ids);
>
> static struct platform_driver sun6i_a31_ar100_clk_driver = {
> .driver = {
> .name = "sun6i-a31-ar100-clk",
> .of_match_table = sun6i_a31_ar100_clk_dt_ids,
> + .suppress_bind_attrs = true,
> },
> .probe = sun6i_a31_ar100_clk_probe,
> - .remove = sun6i_a31_ar100_clk_remove,
> };
> -module_platform_driver(sun6i_a31_ar100_clk_driver);
> -
> -MODULE_AUTHOR("Boris BREZILLON <boris.brezillon@...e-electrons.com>");
> -MODULE_DESCRIPTION("Allwinner A31 AR100 clock Driver");
> -MODULE_LICENSE("GPL v2");
> +builtin_platform_driver(sun6i_a31_ar100_clk_driver);
> diff --git a/drivers/clk/sunxi/clk-sun8i-apb0.c b/drivers/clk/sunxi/clk-sun8i-apb0.c
> index 2ea61debffc1..a5666e1d0ce7 100644
> --- a/drivers/clk/sunxi/clk-sun8i-apb0.c
> +++ b/drivers/clk/sunxi/clk-sun8i-apb0.c
> @@ -15,7 +15,7 @@
> */
>
> #include <linux/clk-provider.h>
> -#include <linux/module.h>
> +#include <linux/init.h>
> #include <linux/of.h>
> #include <linux/of_address.h>
> #include <linux/platform_device.h>
> @@ -108,7 +108,6 @@ static const struct of_device_id sun8i_a23_apb0_clk_dt_ids[] = {
> { .compatible = "allwinner,sun8i-a23-apb0-clk" },
> { /* sentinel */ }
> };
> -MODULE_DEVICE_TABLE(of, sun8i_a23_apb0_clk_dt_ids);
>
> static struct platform_driver sun8i_a23_apb0_clk_driver = {
> .driver = {
> @@ -117,8 +116,4 @@ static struct platform_driver sun8i_a23_apb0_clk_driver = {
> },
> .probe = sun8i_a23_apb0_clk_probe,
> };
> -module_platform_driver(sun8i_a23_apb0_clk_driver);
> -
> -MODULE_AUTHOR("Chen-Yu Tsai <wens@...e.org>");
> -MODULE_DESCRIPTION("Allwinner A23 APB0 clock Driver");
> -MODULE_LICENSE("GPL v2");
> +builtin_platform_driver(sun8i_a23_apb0_clk_driver);
> diff --git a/drivers/clk/sunxi/clk-sun9i-mmc.c b/drivers/clk/sunxi/clk-sun9i-mmc.c
> index 716737388b7d..6041bdba2e97 100644
> --- a/drivers/clk/sunxi/clk-sun9i-mmc.c
> +++ b/drivers/clk/sunxi/clk-sun9i-mmc.c
> @@ -16,7 +16,7 @@
>
> #include <linux/clk.h>
> #include <linux/clk-provider.h>
> -#include <linux/module.h>
> +#include <linux/init.h>
> #include <linux/of.h>
> #include <linux/of_device.h>
> #include <linux/reset.h>
> @@ -183,39 +183,17 @@ err_clk_register:
> return ret;
> }
>
> -static int sun9i_a80_mmc_config_clk_remove(struct platform_device *pdev)
> -{
> - struct device_node *np = pdev->dev.of_node;
> - struct sun9i_mmc_clk_data *data = platform_get_drvdata(pdev);
> - struct clk_onecell_data *clk_data = &data->clk_data;
> - int i;
> -
> - reset_controller_unregister(&data->rcdev);
> - of_clk_del_provider(np);
> - for (i = 0; i < clk_data->clk_num; i++)
> - clk_unregister(clk_data->clks[i]);
> -
> - reset_control_assert(data->reset);
> -
> - return 0;
> -}
> -
> static const struct of_device_id sun9i_a80_mmc_config_clk_dt_ids[] = {
> { .compatible = "allwinner,sun9i-a80-mmc-config-clk" },
> { /* sentinel */ }
> };
> -MODULE_DEVICE_TABLE(of, sun9i_a80_mmc_config_clk_dt_ids);
>
> static struct platform_driver sun9i_a80_mmc_config_clk_driver = {
> .driver = {
> .name = "sun9i-a80-mmc-config-clk",
> + .suppress_bind_attrs = true,
> .of_match_table = sun9i_a80_mmc_config_clk_dt_ids,
> },
> .probe = sun9i_a80_mmc_config_clk_probe,
> - .remove = sun9i_a80_mmc_config_clk_remove,
> };
> -module_platform_driver(sun9i_a80_mmc_config_clk_driver);
> -
> -MODULE_AUTHOR("Chen-Yu Tsai <wens@...e.org>");
> -MODULE_DESCRIPTION("Allwinner A80 MMC clock/reset Driver");
> -MODULE_LICENSE("GPL v2");
> +builtin_platform_driver(sun9i_a80_mmc_config_clk_driver);
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