[[PATCH v2 1/6] Revert "drivers/tty/serial: make 8250/8250_mtk.c explicitly non-modular"] On 11/02/2016 (Thu 16:41) Arnd Bergmann wrote:
> This reverts commit d72d391c126e, which tried to remove dead code but
> left the driver in a useless state when the main 8250 driver is a
Am I misunderstanding something? The commit didn't cause the driver to
be in a useless state for 8250=m. But rather isn't that it was a
pre-existing condition, independent of the change to 8250_mtk.c to
remove the dead code in d72d391c126e?
Since the commit did not touch Kconfig or Makefile, I can't see how it
could cause some new useless state that did not already exist, and hence
the "Fixes:" tag is invalid as well.
Paul.
--
> loadable module. This would normally result in a link error, but
> as the entire drivers/tty/serial/8250/ directory is only entered
> when CONFIG_SERIAL_8250 is set, we never notice that the driver does
> not get built in this configuration.
>
> Signed-off-by: Arnd Bergmann <arnd@xxxxxxxx>
> Fixes: d72d391c126e ("drivers/tty/serial: make 8250/8250_mtk.c explicitly non-modular")
> ---
> drivers/tty/serial/8250/8250_mtk.c | 35 ++++++++++++++++++++++++++++-------
> 1 file changed, 28 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/tty/serial/8250/8250_mtk.c b/drivers/tty/serial/8250/8250_mtk.c
> index 0e590b233f03..78883ca64ddd 100644
> --- a/drivers/tty/serial/8250/8250_mtk.c
> +++ b/drivers/tty/serial/8250/8250_mtk.c
> @@ -16,7 +16,7 @@
> */
> #include <linux/clk.h>
> #include <linux/io.h>
> -#include <linux/init.h>
> +#include <linux/module.h>
> #include <linux/of_irq.h>
> #include <linux/of_platform.h>
> #include <linux/platform_device.h>
> @@ -245,6 +245,23 @@ static int mtk8250_probe(struct platform_device *pdev)
> return 0;
> }
>
> +static int mtk8250_remove(struct platform_device *pdev)
> +{
> + struct mtk8250_data *data = platform_get_drvdata(pdev);
> +
> + pm_runtime_get_sync(&pdev->dev);
> +
> + serial8250_unregister_port(data->line);
> +
> + pm_runtime_disable(&pdev->dev);
> + pm_runtime_put_noidle(&pdev->dev);
> +
> + if (!pm_runtime_status_suspended(&pdev->dev))
> + mtk8250_runtime_suspend(&pdev->dev);
> +
> + return 0;
> +}
> +
> #ifdef CONFIG_PM_SLEEP
> static int mtk8250_suspend(struct device *dev)
> {
> @@ -275,18 +292,18 @@ static const struct of_device_id mtk8250_of_match[] = {
> { .compatible = "mediatek,mt6577-uart" },
> { /* Sentinel */ }
> };
> +MODULE_DEVICE_TABLE(of, mtk8250_of_match);
>
> static struct platform_driver mtk8250_platform_driver = {
> .driver = {
> - .name = "mt6577-uart",
> - .pm = &mtk8250_pm_ops,
> - .of_match_table = mtk8250_of_match,
> - .suppress_bind_attrs = true,
> -
> + .name = "mt6577-uart",
> + .pm = &mtk8250_pm_ops,
> + .of_match_table = mtk8250_of_match,
> },
> .probe = mtk8250_probe,
> + .remove = mtk8250_remove,
> };
> -builtin_platform_driver(mtk8250_platform_driver);
> +module_platform_driver(mtk8250_platform_driver);
>
> #ifdef CONFIG_SERIAL_8250_CONSOLE
> static int __init early_mtk8250_setup(struct earlycon_device *device,
> @@ -302,3 +319,7 @@ static int __init early_mtk8250_setup(struct earlycon_device *device,
>
> OF_EARLYCON_DECLARE(mtk8250, "mediatek,mt6577-uart", early_mtk8250_setup);
> #endif
> +
> +MODULE_AUTHOR("Matthias Brugger");
> +MODULE_LICENSE("GPL");
> +MODULE_DESCRIPTION("Mediatek 8250 serial port driver");
> --
> 2.7.0
>
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