[PATCH] hwmon: nct7904: fix comparison of u8 variable ret with less than zero

[Colin King]

From: Colin Ian King <colin.king@xxxxxxxxxxxxx>

Currently u8 variable tmp is being checked for negative error returns
however this will be false since tmp is unsigned. Fix this by making
tmp an int.

Addresses-Coverity: ("Unsigned compared against 0")
Fixes: af55ab0b0792 ("hwmon: (nct7904) Add extra sysfs support for fan, voltage and temperature.")
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
---
 drivers/hwmon/nct7904.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/hwmon/nct7904.c b/drivers/hwmon/nct7904.c
index 5fa69898674c..b63f51d0378e 100644
--- a/drivers/hwmon/nct7904.c
+++ b/drivers/hwmon/nct7904.c
@@ -567,8 +567,7 @@ static int nct7904_write_in(struct device *dev, u32 attr, int channel,
 			    long val)
 {
 	struct nct7904_data *data = dev_get_drvdata(dev);
-	int ret, index;
-	u8 tmp;
+	int ret, index, tmp;
 
 	index = nct7904_chan_to_index[channel];
 
-- 
2.20.1