[PATCH 1/8] tty: 8250_ingenic: Use devm_clk_get_enabled() helpers
From: Lei Liu <hidden>
Date: 2024-08-22 03:40:01
Also in:
linux-mips, linux-serial, linux-tegra, lkml
Subsystem:
8250/16?50 (and clone uarts) serial driver, ingenic jz47xx socs, the rest, tty layer and serial drivers · Maintainers:
Greg Kroah-Hartman, Paul Cercueil, Linus Torvalds, Jiri Slaby
The devm_clk_get_enabled() helpers:
- call devm_clk_get()
- call clk_prepare_enable() and register what is needed in order to
call clk_disable_unprepare() when needed, as a managed resource.
This simplifies the code and avoids calls to clk_disable_unprepare().
Signed-off-by: Lei Liu <redacted>
---
drivers/tty/serial/8250/8250_ingenic.c | 26 +++-----------------------
1 file changed, 3 insertions(+), 23 deletions(-)
diff --git a/drivers/tty/serial/8250/8250_ingenic.c b/drivers/tty/serial/8250/8250_ingenic.c
index a2783e38a2e3..5f8787309064 100644
--- a/drivers/tty/serial/8250/8250_ingenic.c
+++ b/drivers/tty/serial/8250/8250_ingenic.c@@ -274,44 +274,26 @@ static int ingenic_uart_probe(struct platform_device *pdev) if (!uart.port.membase) return -ENOMEM; - data->clk_module = devm_clk_get(&pdev->dev, "module"); + data->clk_module = devm_clk_get_enabled(&pdev->dev, "module"); if (IS_ERR(data->clk_module)) return dev_err_probe(&pdev->dev, PTR_ERR(data->clk_module), "unable to get module clock\n"); - data->clk_baud = devm_clk_get(&pdev->dev, "baud"); + data->clk_baud = devm_clk_get_enabled(&pdev->dev, "baud"); if (IS_ERR(data->clk_baud)) return dev_err_probe(&pdev->dev, PTR_ERR(data->clk_baud), "unable to get baud clock\n"); - err = clk_prepare_enable(data->clk_module); - if (err) { - dev_err(&pdev->dev, "could not enable module clock: %d\n", err); - goto out; - } - - err = clk_prepare_enable(data->clk_baud); - if (err) { - dev_err(&pdev->dev, "could not enable baud clock: %d\n", err); - goto out_disable_moduleclk; - } uart.port.uartclk = clk_get_rate(data->clk_baud); data->line = serial8250_register_8250_port(&uart); if (data->line < 0) { err = data->line; - goto out_disable_baudclk; + return err; } platform_set_drvdata(pdev, data); return 0; - -out_disable_baudclk: - clk_disable_unprepare(data->clk_baud); -out_disable_moduleclk: - clk_disable_unprepare(data->clk_module); -out: - return err; } static void ingenic_uart_remove(struct platform_device *pdev)
@@ -319,8 +301,6 @@ static void ingenic_uart_remove(struct platform_device *pdev) struct ingenic_uart_data *data = platform_get_drvdata(pdev); serial8250_unregister_port(data->line); - clk_disable_unprepare(data->clk_module); - clk_disable_unprepare(data->clk_baud); } static const struct ingenic_uart_config jz4740_uart_config = {
--
2.34.1