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| author | Dmitry Osipenko <digetx@gmail.com> | 2020-11-04 19:49:09 +0300 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzk@kernel.org> | 2020-11-26 20:50:35 +0300 |
| commit | 0260979b018faaf90ff5a7bb04ac3f38e9dee6e3 (patch) | |
| tree | df6a678af9ec50c407d60c5bafdc5cdc4a55d81f | |
| parent | 06f079816d4c4e43d4128f394ae249934a32dffd (diff) | |
| download | linux-0260979b018faaf90ff5a7bb04ac3f38e9dee6e3.tar.xz | |
memory: tegra20-emc: Make driver modular
Add modularization support to the Tegra20 EMC driver, which now can be
compiled as a loadable kernel module.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Acked-by: Thierry Reding <treding@nvidia.com>
Link: https://lore.kernel.org/r/20201104164923.21238-34-digetx@gmail.com
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
| -rw-r--r-- | drivers/memory/tegra/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/memory/tegra/tegra20-emc.c | 17 |
2 files changed, 13 insertions, 6 deletions
diff --git a/drivers/memory/tegra/Kconfig b/drivers/memory/tegra/Kconfig index b38e5255effe..ff426747cd7d 100644 --- a/drivers/memory/tegra/Kconfig +++ b/drivers/memory/tegra/Kconfig @@ -9,7 +9,7 @@ config TEGRA_MC NVIDIA Tegra SoCs. config TEGRA20_EMC - bool "NVIDIA Tegra20 External Memory Controller driver" + tristate "NVIDIA Tegra20 External Memory Controller driver" default y depends on ARCH_TEGRA_2x_SOC help diff --git a/drivers/memory/tegra/tegra20-emc.c b/drivers/memory/tegra/tegra20-emc.c index c9fe58a724ee..88619e3ec435 100644 --- a/drivers/memory/tegra/tegra20-emc.c +++ b/drivers/memory/tegra/tegra20-emc.c @@ -721,6 +721,13 @@ static int tegra_emc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, emc); tegra_emc_debugfs_init(emc); + /* + * Don't allow the kernel module to be unloaded. Unloading adds some + * extra complexity which doesn't really worth the effort in a case of + * this driver. + */ + try_module_get(THIS_MODULE); + return 0; unset_cb: @@ -733,6 +740,7 @@ static const struct of_device_id tegra_emc_of_match[] = { { .compatible = "nvidia,tegra20-emc", }, {}, }; +MODULE_DEVICE_TABLE(of, tegra_emc_of_match); static struct platform_driver tegra_emc_driver = { .probe = tegra_emc_probe, @@ -742,9 +750,8 @@ static struct platform_driver tegra_emc_driver = { .suppress_bind_attrs = true, }, }; +module_platform_driver(tegra_emc_driver); -static int __init tegra_emc_init(void) -{ - return platform_driver_register(&tegra_emc_driver); -} -subsys_initcall(tegra_emc_init); +MODULE_AUTHOR("Dmitry Osipenko <digetx@gmail.com>"); +MODULE_DESCRIPTION("NVIDIA Tegra20 EMC driver"); +MODULE_LICENSE("GPL v2"); |