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spi: ar934x: Use helper function devm_clk_get_enabled()

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Since commit 7ef9651e97 ("clk: Provide new devm_clk helpers for prepared
and enabled clocks"), devm_clk_get() and clk_prepare_enable() can now be
replaced by devm_clk_get_enabled() when driver enables (and possibly
prepares) the clocks for the whole lifetime of the device. Moreover, it is
no longer necessary to unprepare and disable the clocks explicitly.

Reviewed-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Li Zetao <lizetao1@huawei.com>
Link: https://lore.kernel.org/r/20230823133938.1359106-2-lizetao1@huawei.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Li Zetao 2023-08-23 21:39:14 +08:00 committed by Mark Brown
parent 2d98bdad98
commit 1d3ea34b7b
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GPG Key ID: 24D68B725D5487D0
1 changed files with 3 additions and 19 deletions
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22
drivers/spi/spi-ar934x.c
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@ -168,27 +168,21 @@ static int ar934x_spi_probe(struct platform_device *pdev)
struct ar934x_spi *sp;
void __iomem *base;
struct clk *clk;
int ret;
base = devm_platform_ioremap_resource(pdev, 0);
if (IS_ERR(base))
return PTR_ERR(base);
clk = devm_clk_get(&pdev->dev, NULL);
clk = devm_clk_get_enabled(&pdev->dev, NULL);
if (IS_ERR(clk)) {
dev_err(&pdev->dev, "failed to get clock\n");
return PTR_ERR(clk);
}
ret = clk_prepare_enable(clk);
if (ret)
return ret;
ctlr = devm_spi_alloc_host(&pdev->dev, sizeof(*sp));
if (!ctlr) {
dev_info(&pdev->dev, "failed to allocate spi controller\n");
ret = -ENOMEM;
goto err_clk_disable;
return -ENOMEM;
}
/* disable flash mapping and expose spi controller registers */
@ -212,25 +206,15 @@ static int ar934x_spi_probe(struct platform_device *pdev)
sp->clk_freq = clk_get_rate(clk);
sp->ctlr = ctlr;
ret = spi_register_controller(ctlr);
if (!ret)
return 0;
err_clk_disable:
clk_disable_unprepare(clk);
return ret;
return spi_register_controller(ctlr);
}
static void ar934x_spi_remove(struct platform_device *pdev)
{
struct spi_controller *ctlr;
struct ar934x_spi *sp;
ctlr = dev_get_drvdata(&pdev->dev);
sp = spi_controller_get_devdata(ctlr);
spi_unregister_controller(ctlr);
clk_disable_unprepare(sp->clk);
}
static struct platform_driver ar934x_spi_driver = {