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List: linux-rtc
Subject: [PATCH] rtc: rtc-mrst: Replace mdelay() with msleep() in mrst_read_time()
From: Jia-Ju Bai <baijiaju1990 () gmail ! com>
Date: 2018-07-30 13:59:03
Message-ID: 20180730135903.9442-1-baijiaju1990 () gmail ! com
[Download RAW message or body]
mrst_read_time() is never called in atomic context.
It calls mdelay() to busily wait, which is not necessary.
mdelay() can be replaced with msleep().
This is found by a static analysis tool named DCNS written by myself.
Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
---
drivers/rtc/rtc-mrst.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/rtc/rtc-mrst.c b/drivers/rtc/rtc-mrst.c
index fcb9de5218b2..e4015f70f9fe 100644
--- a/drivers/rtc/rtc-mrst.c
+++ b/drivers/rtc/rtc-mrst.c
@@ -91,7 +91,7 @@ static int mrst_read_time(struct device *dev, struct rtc_time *time)
unsigned long flags;
if (vrtc_is_updating())
- mdelay(20);
+ msleep(20);
spin_lock_irqsave(&rtc_lock, flags);
time->tm_sec = vrtc_cmos_read(RTC_SECONDS);
--
2.17.0
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