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[79.139.237.54]) by smtp.gmail.com with ESMTPSA id l22sm4323522lji.120.2020.06.09.06.14.28 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 09 Jun 2020 06:14:29 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Jonathan Hunter , Georgi Djakov , Rob Herring , Michael Turquette , Stephen Boyd , Peter De Schrijver , MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Mikko Perttunen Subject: [PATCH v4 04/37] memory: tegra20-emc: Make driver modular Date: Tue, 9 Jun 2020 16:13:31 +0300 Message-Id: <20200609131404.17523-5-digetx@gmail.com> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200609131404.17523-1-digetx@gmail.com> References: <20200609131404.17523-1-digetx@gmail.com> MIME-Version: 1.0 X-Mailman-Approved-At: Wed, 10 Jun 2020 07:35:32 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, =?UTF-8?q?Artur=20=C5=9Awigo=C5=84?= , linux-tegra@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This patch adds modularization support to the Tegra20 EMC driver. Driver now can be compiled as a loadable kernel module. Signed-off-by: Dmitry Osipenko --- drivers/memory/tegra/Kconfig | 2 +- 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 9f0a96bf9ccc..7e0e1ef87763 100644 --- a/drivers/memory/tegra/Kconfig +++ b/drivers/memory/tegra/Kconfig @@ -8,7 +8,7 @@ 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 027f46287dbf..0baa6590adea 100644 --- a/drivers/memory/tegra/tegra20-emc.c +++ b/drivers/memory/tegra/tegra20-emc.c @@ -724,6 +724,13 @@ 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: @@ -736,6 +743,7 @@ 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, @@ -745,9 +753,8 @@ 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 "); +MODULE_DESCRIPTION("NVIDIA Tegra20 EMC driver"); +MODULE_LICENSE("GPL v2"); -- 2.26.0 _______________________________________________ dri-devel mailing list dri-devel@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/dri-devel