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rtc: mxc_v2: Replace spin_lock_irqsave with spin_lock in hard IRQ

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It is redundant to do irqsave and irqrestore in hardIRQ context, where
it has been in a irq-disabled context.

Signed-off-by: Xiaofei Tan <tanxiaofei@huawei.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/1612355981-6764-7-git-send-email-tanxiaofei@huawei.com
This commit is contained in:
Xiaofei Tan 2021-02-03 20:39:41 +08:00 committed by Alexandre Belloni
parent 3f2d301847
commit 0c1095d334
1 changed files with 3 additions and 4 deletions
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7
drivers/rtc/rtc-mxc_v2.c
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@ -74,13 +74,12 @@ static irqreturn_t mxc_rtc_interrupt(int irq, void *dev_id)
struct device *dev = dev_id;
struct mxc_rtc_data *pdata = dev_get_drvdata(dev);
void __iomem *ioaddr = pdata->ioaddr;
unsigned long flags;
u32 lp_status;
u32 lp_cr;
spin_lock_irqsave(&pdata->lock, flags);
spin_lock(&pdata->lock);
if (clk_enable(pdata->clk)) {
spin_unlock_irqrestore(&pdata->lock, flags);
spin_unlock(&pdata->lock);
return IRQ_NONE;
}
@ -104,7 +103,7 @@ static irqreturn_t mxc_rtc_interrupt(int irq, void *dev_id)
mxc_rtc_sync_lp_locked(dev, ioaddr);
clk_disable(pdata->clk);
spin_unlock_irqrestore(&pdata->lock, flags);
spin_unlock(&pdata->lock);
return IRQ_HANDLED;
}