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watchdog: visconti: Use devm_clk_get_enabled() helper
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 and avoids the need of a dedicated function used with devm_add_action_or_reset(). Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by: Guenter Roeck <linux@roeck-us.net> Link: https://lore.kernel.org/r/13e8cdf17556da111d1d98a8fe0b1dc1c78007e2.1672417940.git.christophe.jaillet@wanadoo.fr Signed-off-by: Guenter Roeck <linux@roeck-us.net> Signed-off-by: Wim Van Sebroeck <wim@linux-watchdog.org>
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@ -112,11 +112,6 @@ static const struct watchdog_ops visconti_wdt_ops = {
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.set_timeout = visconti_wdt_set_timeout,
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.set_timeout = visconti_wdt_set_timeout,
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};
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};
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static void visconti_clk_disable_unprepare(void *data)
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{
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clk_disable_unprepare(data);
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}
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static int visconti_wdt_probe(struct platform_device *pdev)
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static int visconti_wdt_probe(struct platform_device *pdev)
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{
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{
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struct watchdog_device *wdev;
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struct watchdog_device *wdev;
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@ -134,20 +129,10 @@ static int visconti_wdt_probe(struct platform_device *pdev)
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if (IS_ERR(priv->base))
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if (IS_ERR(priv->base))
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return PTR_ERR(priv->base);
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return PTR_ERR(priv->base);
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clk = devm_clk_get(dev, NULL);
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clk = devm_clk_get_enabled(dev, NULL);
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if (IS_ERR(clk))
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if (IS_ERR(clk))
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return dev_err_probe(dev, PTR_ERR(clk), "Could not get clock\n");
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return dev_err_probe(dev, PTR_ERR(clk), "Could not get clock\n");
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ret = clk_prepare_enable(clk);
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if (ret) {
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dev_err(dev, "Could not enable clock\n");
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return ret;
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}
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ret = devm_add_action_or_reset(dev, visconti_clk_disable_unprepare, clk);
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if (ret)
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return ret;
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clk_freq = clk_get_rate(clk);
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clk_freq = clk_get_rate(clk);
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if (!clk_freq)
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if (!clk_freq)
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return -EINVAL;
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return -EINVAL;
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