This function should not allow negative values of "wr_val". If
negatives are allowed then capping the upper bound at 7 is
meaningless. Let's make it unsigned.
Fixes: 7dc7967fc39a ("staging: kpc2000: add initial set of Daktronics drivers")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
drivers/staging/kpc2000/kpc2000/core.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/staging/kpc2000/kpc2000/core.c b/drivers/staging/kpc2000/kpc2000/core.c
index 93cf28febdf6..7b00d7069e21 100644
--- a/drivers/staging/kpc2000/kpc2000/core.c
+++ b/drivers/staging/kpc2000/kpc2000/core.c
@@ -110,10 +110,10 @@ static ssize_t cpld_reconfigure(struct device *dev,
const char *buf, size_t count)
{
struct kp2000_device *pcard = dev_get_drvdata(dev);
- long wr_val;
+ unsigned long wr_val;
int rv;
- rv = kstrtol(buf, 0, &wr_val);
+ rv = kstrtoul(buf, 0, &wr_val);
if (rv < 0)
return rv;
if (wr_val > 7)
--
2.11.0
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