From 9b31b1ea125ca2e734ae89badc0c3073b4445842 Mon Sep 17 00:00:00 2001 From: Guenter Roeck Date: Sat, 4 Mar 2023 08:56:52 -0800 Subject: watchdog: s3c2410_wdt: Use devm_clk_get[_optional]_enabled() helpers MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The devm_clk_get[_optional]_enabled() helpers: - call devm_clk_get[_optional]() - 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 the calls to clk_disable_unprepare(). While at it, use dev_err_probe consistently, and use its return value to return the error code. Cc: Uwe Kleine-König Signed-off-by: Guenter Roeck Reviewed-by: Uwe Kleine-König Link: https://lore.kernel.org/r/20230304165653.2179835-1-linux@roeck-us.net Signed-off-by: Wim Van Sebroeck --- drivers/watchdog/s3c2410_wdt.c | 45 +++++++++--------------------------------- 1 file changed, 9 insertions(+), 36 deletions(-) (limited to 'drivers/watchdog') diff --git a/drivers/watchdog/s3c2410_wdt.c b/drivers/watchdog/s3c2410_wdt.c index 200ba236a72e..a1fcb79b0b7c 100644 --- a/drivers/watchdog/s3c2410_wdt.c +++ b/drivers/watchdog/s3c2410_wdt.c @@ -661,35 +661,17 @@ static int s3c2410wdt_probe(struct platform_device *pdev) if (IS_ERR(wdt->reg_base)) return PTR_ERR(wdt->reg_base); - wdt->bus_clk = devm_clk_get(dev, "watchdog"); - if (IS_ERR(wdt->bus_clk)) { - dev_err(dev, "failed to find bus clock\n"); - return PTR_ERR(wdt->bus_clk); - } - - ret = clk_prepare_enable(wdt->bus_clk); - if (ret < 0) { - dev_err(dev, "failed to enable bus clock\n"); - return ret; - } + wdt->bus_clk = devm_clk_get_enabled(dev, "watchdog"); + if (IS_ERR(wdt->bus_clk)) + return dev_err_probe(dev, PTR_ERR(wdt->bus_clk), "failed to get bus clock\n"); /* * "watchdog_src" clock is optional; if it's not present -- just skip it * and use "watchdog" clock as both bus and source clock. */ - wdt->src_clk = devm_clk_get_optional(dev, "watchdog_src"); - if (IS_ERR(wdt->src_clk)) { - dev_err_probe(dev, PTR_ERR(wdt->src_clk), - "failed to get source clock\n"); - ret = PTR_ERR(wdt->src_clk); - goto err_bus_clk; - } - - ret = clk_prepare_enable(wdt->src_clk); - if (ret) { - dev_err(dev, "failed to enable source clock\n"); - goto err_bus_clk; - } + wdt->src_clk = devm_clk_get_optional_enabled(dev, "watchdog_src"); + if (IS_ERR(wdt->src_clk)) + return dev_err_probe(dev, PTR_ERR(wdt->src_clk), "failed to get source clock\n"); wdt->wdt_device.min_timeout = 1; wdt->wdt_device.max_timeout = s3c2410wdt_max_timeout(wdt); @@ -710,7 +692,7 @@ static int s3c2410wdt_probe(struct platform_device *pdev) S3C2410_WATCHDOG_DEFAULT_TIME); } else { dev_err(dev, "failed to use default timeout\n"); - goto err_src_clk; + return ret; } } @@ -718,7 +700,7 @@ static int s3c2410wdt_probe(struct platform_device *pdev) pdev->name, pdev); if (ret != 0) { dev_err(dev, "failed to install irq (%d)\n", ret); - goto err_src_clk; + return ret; } watchdog_set_nowayout(&wdt->wdt_device, nowayout); @@ -744,7 +726,7 @@ static int s3c2410wdt_probe(struct platform_device *pdev) ret = watchdog_register_device(&wdt->wdt_device); if (ret) - goto err_src_clk; + return ret; ret = s3c2410wdt_enable(wdt, true); if (ret < 0) @@ -766,12 +748,6 @@ static int s3c2410wdt_probe(struct platform_device *pdev) err_unregister: watchdog_unregister_device(&wdt->wdt_device); - err_src_clk: - clk_disable_unprepare(wdt->src_clk); - - err_bus_clk: - clk_disable_unprepare(wdt->bus_clk); - return ret; } @@ -786,9 +762,6 @@ static int s3c2410wdt_remove(struct platform_device *dev) watchdog_unregister_device(&wdt->wdt_device); - clk_disable_unprepare(wdt->src_clk); - clk_disable_unprepare(wdt->bus_clk); - return 0; } -- cgit v1.2.3