linux-kernel - [PATCH v1 2/2] spi: tegra20-slink: Don't use resource-managed spi

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Message-Id: <20210731191458.30535-2-digetx@gmail.com>
Date:   Sat, 31 Jul 2021 22:14:58 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <treding@...dia.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Mark Brown <broonie@...nel.org>,
        Laxman Dewangan <ldewangan@...dia.com>
Cc:     linux-spi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-tegra@...r.kernel.org
Subject: [PATCH v1 2/2] spi: tegra20-slink: Don't use resource-managed spi_register helper

Don't use resource-managed spi_register helper to correct the driver
removal order and fix memory leak of spi_master that is never released.

Signed-off-by: Dmitry Osipenko <digetx@...il.com>
---
 drivers/spi/spi-tegra20-slink.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/drivers/spi/spi-tegra20-slink.c b/drivers/spi/spi-tegra20-slink.c
index 501eca1d0f89..deff16ba6d58 100644
--- a/drivers/spi/spi-tegra20-slink.c
+++ b/drivers/spi/spi-tegra20-slink.c
@@ -1112,7 +1112,7 @@ static int tegra_slink_probe(struct platform_device *pdev)
 	tegra_slink_writel(tspi, tspi->def_command2_reg, SLINK_COMMAND2);
 
 	master->dev.of_node = pdev->dev.of_node;
-	ret = devm_spi_register_master(&pdev->dev, master);
+	ret = spi_register_master(master);
 	if (ret < 0) {
 		dev_err(&pdev->dev, "can not register to master err %d\n", ret);
 		goto exit_free_irq;
@@ -1142,6 +1142,8 @@ static int tegra_slink_remove(struct platform_device *pdev)
 	struct spi_master *master = platform_get_drvdata(pdev);
 	struct tegra_slink_data	*tspi = spi_master_get_devdata(master);
 
+	spi_unregister_master(master);
+
 	free_irq(tspi->irq, tspi);
 
 	pm_runtime_disable(&pdev->dev);
@@ -1152,6 +1154,8 @@ static int tegra_slink_remove(struct platform_device *pdev)
 	if (tspi->rx_dma_chan)
 		tegra_slink_deinit_dma_param(tspi, true);
 
+	spi_master_put(master);
+
 	return 0;
 }
 
-- 
2.32.0