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authorMiquel Raynal <miquel.raynal@bootlin.com>2022-05-20 11:25:00 +0300
committerAlexandre Belloni <alexandre.belloni@bootlin.com>2022-05-25 02:24:21 +0300
commit3f3489248927a53fcfec571ff603163f6b676a46 (patch)
tree3b31bfafc881a2d0ea5c0b8fa56c25824cca6e39 /drivers/rtc/rtc-rzn1.c
parent0b6da785130d9e8cf33d001a7bf08a979c87d019 (diff)
downloadlinux-3f3489248927a53fcfec571ff603163f6b676a46.tar.xz
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/rtc-rzn1.c')
-rw-r--r--drivers/rtc/rtc-rzn1.c3
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;