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rtc: hym8563: Return -EINVAL if the time is known to be invalid

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commit f236a2a2ebabad0848ad0995af7ad1dc7029e895 upstream.

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.

Fixes: dcaf038493 ("rtc: add hym8563 rtc-driver")
Signed-off-by: Paul Kocialkowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Alexandre Belloni <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
This commit is contained in:
Paul Kocialkowski 2019-12-12 16:31:10 +01:00 • committed by Greg Kroah-Hartman
commit 7a3aa58c0e
1 changed files with 1 additions and 1 deletions
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2
drivers/rtc/rtc-hym8563.c
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@ -97,7 +97,7 @@ static int hym8563_rtc_read_time(struct device *dev, struct rtc_time *tm)
if (!hym8563->valid) {
dev_warn(&client->dev, "no valid clock/calendar values available\n");
return -EPERM;
return -EINVAL;
}
ret = i2c_smbus_read_i2c_block_data(client, HYM8563_SEC, 7, buf);