[PATCH] serial: sccnxp: Use devm_clk_get_enabled() helper

From: Christophe JAILLET
Date: Fri Dec 30 2022 - 12:00:05 EST


The devm_clk_get_enabled() helper:
- calls devm_clk_get()
- calls clk_prepare_enable() and registers what is needed in order to
call clk_disable_unprepare() when needed, as a managed resource.

This simplifies the code.
This also avoids some other warnings/issues. (see [1])

[1]: https://lore.kernel.org/all/20221118233101.never.215-kees@xxxxxxxxxx/

Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
drivers/tty/serial/sccnxp.c | 12 +-----------
1 file changed, 1 insertion(+), 11 deletions(-)

diff --git a/drivers/tty/serial/sccnxp.c b/drivers/tty/serial/sccnxp.c
index 7df687822634..4f2fc5f7bb19 100644
--- a/drivers/tty/serial/sccnxp.c
+++ b/drivers/tty/serial/sccnxp.c
@@ -913,23 +913,13 @@ static int sccnxp_probe(struct platform_device *pdev)
} else if (PTR_ERR(s->regulator) == -EPROBE_DEFER)
return -EPROBE_DEFER;

- clk = devm_clk_get(&pdev->dev, NULL);
+ clk = devm_clk_get_enabled(&pdev->dev, NULL);
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
if (ret == -EPROBE_DEFER)
goto err_out;
uartclk = 0;
} else {
- ret = clk_prepare_enable(clk);
- if (ret)
- goto err_out;
-
- ret = devm_add_action_or_reset(&pdev->dev,
- (void(*)(void *))clk_disable_unprepare,
- clk);
- if (ret)
- goto err_out;
-
uartclk = clk_get_rate(clk);
}

--
2.34.1