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spi: sifive: disable clk when probe fails and remove 

[ Upstream commit a725272bda ]

The driver forgets to disable and unprepare clk when probe fails and
remove.
Add the calls to fix the problem.

Signed-off-by: Chuhong Yuan <hslester96@gmail.com>
Reviewed-by: Palmer Dabbelt <palmer@dabbelt.com>
Link: https://lore.kernel.org/r/20191101121745.13413-1-hslester96@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
5.4-rM2-2.2.x-imx-squashed
Chuhong Yuan 2019-11-01 20:17:45 +08:00 committed by Greg Kroah-Hartman
parent 07d0760b43
commit b257b8a128
1 changed files with 7 additions and 4 deletions
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11
drivers/spi/spi-sifive.c
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@ -357,14 +357,14 @@ static int sifive_spi_probe(struct platform_device *pdev)
if (!cs_bits) {
dev_err(&pdev->dev, "Could not auto probe CS lines\n");
ret = -EINVAL;
goto put_master;
goto disable_clk;
}
num_cs = ilog2(cs_bits) + 1;
if (num_cs > SIFIVE_SPI_MAX_CS) {
dev_err(&pdev->dev, "Invalid number of spi slaves\n");
ret = -EINVAL;
goto put_master;
goto disable_clk;
}
/* Define our master */
@ -393,7 +393,7 @@ static int sifive_spi_probe(struct platform_device *pdev)
dev_name(&pdev->dev), spi);
if (ret) {
dev_err(&pdev->dev, "Unable to bind to interrupt\n");
goto put_master;
goto disable_clk;
}
dev_info(&pdev->dev, "mapped; irq=%d, cs=%d\n",
@ -402,11 +402,13 @@ static int sifive_spi_probe(struct platform_device *pdev)
ret = devm_spi_register_master(&pdev->dev, master);
if (ret < 0) {
dev_err(&pdev->dev, "spi_register_master failed\n");
goto put_master;
goto disable_clk;
}
return 0;
disable_clk:
clk_disable_unprepare(spi->clk);
put_master:
spi_master_put(master);
@ -420,6 +422,7 @@ static int sifive_spi_remove(struct platform_device *pdev)
/* Disable all the interrupts just in case */
sifive_spi_write(spi, SIFIVE_SPI_REG_IE, 0);
clk_disable_unprepare(spi->clk);
return 0;
}