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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 <paul@crapouillou.net>
Link: https://lore.kernel.org/r/20200505221336.222313-3-paul@crapouillou.net
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Paul Cercueil 2020-05-06 00:13:32 +02:00 committed by Alexandre Belloni
parent c61293f147
commit 796be8b59d
1 changed files with 17 additions and 2 deletions
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19
drivers/rtc/rtc-jz4740.c
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@ -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);