From 796be8b59dec3efe840a251e2ecc0734408c5ff3 Mon Sep 17 00:00:00 2001 From: Paul Cercueil Date: Wed, 6 May 2020 00:13:32 +0200 Subject: [PATCH] rtc: ingenic: Enable clock in probe It makes no sense to request a clock and not enable it even though the hardware is being used. So the driver now enables the clock in the probe. Besides, now we can properly handle errors. Signed-off-by: Paul Cercueil Link: https://lore.kernel.org/r/20200505221336.222313-3-paul@crapouillou.net Signed-off-by: Alexandre Belloni --- drivers/rtc/rtc-jz4740.c | 19 +++++++++++++++++-- 1 file changed, 17 insertions(+), 2 deletions(-) diff --git a/drivers/rtc/rtc-jz4740.c b/drivers/rtc/rtc-jz4740.c index 06ee08089815..129c68cebb92 100644 --- a/drivers/rtc/rtc-jz4740.c +++ b/drivers/rtc/rtc-jz4740.c @@ -264,8 +264,6 @@ static void jz4740_rtc_power_off(void) unsigned long wakeup_filter_ticks; unsigned long reset_counter_ticks; - clk_prepare_enable(rtc->clk); - rtc_rate = clk_get_rate(rtc->clk); /* @@ -297,6 +295,11 @@ static void jz4740_rtc_power_off(void) kernel_halt(); } +static void jz4740_rtc_clk_disable(void *data) +{ + clk_disable_unprepare(data); +} + static const struct of_device_id jz4740_rtc_of_match[] = { { .compatible = "ingenic,jz4740-rtc", .data = (void *)ID_JZ4740 }, { .compatible = "ingenic,jz4760-rtc", .data = (void *)ID_JZ4760 }, @@ -332,6 +335,18 @@ static int jz4740_rtc_probe(struct platform_device *pdev) return PTR_ERR(rtc->clk); } + ret = clk_prepare_enable(rtc->clk); + if (ret) { + dev_err(dev, "Failed to enable clock\n"); + return ret; + } + + ret = devm_add_action_or_reset(dev, jz4740_rtc_clk_disable, rtc->clk); + if (ret) { + dev_err(dev, "Failed to register devm action\n"); + return ret; + } + spin_lock_init(&rtc->lock); platform_set_drvdata(pdev, rtc);