linux-kernel - [PATCH 2/2] rtc: hym8563: Return -EINVAL if the time is known to be invalid

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Date:   Thu, 12 Dec 2019 11:36:58 +0100
From:   Paul Kocialkowski <paul.kocialkowski@...tlin.com>
To:     linux-rtc@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
        Paul Kocialkowski <paul.kocialkowski@...tlin.com>
Subject: [PATCH 2/2] rtc: hym8563: Return -EINVAL if the time is known to be invalid

The current code returns -EPERM when the voltage loss bit is set.
Since the bit indicates that the time value is not valid, return
-EINVAL instead, which is the appropriate error code for this
situation.

Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com>
---
 drivers/rtc/rtc-hym8563.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-hym8563.c b/drivers/rtc/rtc-hym8563.c
index 584a7815f246..e547a892b692 100644
--- a/drivers/rtc/rtc-hym8563.c
+++ b/drivers/rtc/rtc-hym8563.c
@@ -101,7 +101,7 @@ static int hym8563_rtc_read_time(struct device *dev, struct rtc_time *tm)
 	if (ret & HYM8563_SEC_VL) {
 		dev_warn(&client->dev,
 			 "no valid clock/calendar values available\n");
-		return -EPERM;
+		return -EINVAL;
 	}
 
 	tm->tm_sec = bcd2bin(buf[0] & HYM8563_SEC_MASK);
-- 
2.24.0