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| author | Miquel Raynal <miquel.raynal@bootlin.com> | 2022-05-20 10:25:00 +0200 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2022-05-25 01:24:21 +0200 |
| commit | 3f3489248927a53fcfec571ff603163f6b676a46 (patch) | |
| tree | 3b31bfafc881a2d0ea5c0b8fa56c25824cca6e39 /drivers/rtc | |
| parent | 0b6da785130d9e8cf33d001a7bf08a979c87d019 (diff) | |
| download | linux-3f3489248927a53fcfec571ff603163f6b676a46.tar.bz2 | |
rtc: rzn1: Fix a variable type
The calculation in ->set_offset() handles both negative and positive
offsets. The 'steps' variable will be checked to be in a specific [-x;
+x] range, which means it must be a signed integer rather than
unsigned.
This also fixes the following smatch warning:
warn: 'steps' 'true' implies 'steps > 0' is 'true'
Fixes: be4a11cf98af ("rtc: rzn1: Add oscillator offset support")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20220520082500.489248-1-miquel.raynal@bootlin.com
Diffstat (limited to 'drivers/rtc')
| -rw-r--r-- | drivers/rtc/rtc-rzn1.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/drivers/rtc/rtc-rzn1.c b/drivers/rtc/rtc-rzn1.c index 18f33ca62f6c..ac788799c8e3 100644 --- a/drivers/rtc/rtc-rzn1.c +++ b/drivers/rtc/rtc-rzn1.c @@ -270,8 +270,7 @@ static int rzn1_rtc_read_offset(struct device *dev, long *offset) static int rzn1_rtc_set_offset(struct device *dev, long offset) { struct rzn1_rtc *rtc = dev_get_drvdata(dev); - unsigned int steps; - int stepsh, stepsl; + int stepsh, stepsl, steps; u32 subu = 0, ctl2; int ret; |