[PATCH v2 2/5] thermal: rockchip: fix a impossible condition caused by the warning

From: Caesar Wang
Date: Sun Nov 29 2015 - 21:28:51 EST


As the Dan report the smatch check the thermal driver warning:
drivers/thermal/rockchip_thermal.c:551 rockchip_configure_from_dt()
warn: impossible condition '(thermal->tshut_temp > ((~0 >> 1))) =>
(s32min-s32max > s32max)'

Since the Temperature is currently represented as int not long in
the thermal driver.

Fixes: commit 437df2172e8d
("thermal: rockchip: consistently use int for temperatures")

Reported-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
Signed-off-by: Caesar Wang <wxt@xxxxxxxxxxxxxx>

---

Changes in v2: None
Changes in v1: None

drivers/thermal/rockchip_thermal.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/thermal/rockchip_thermal.c b/drivers/thermal/rockchip_thermal.c
index ae796ec..6b0f00d 100644
--- a/drivers/thermal/rockchip_thermal.c
+++ b/drivers/thermal/rockchip_thermal.c
@@ -549,7 +549,7 @@ static int rockchip_configure_from_dt(struct device *dev,
thermal->tshut_temp = shut_temp;
}

- if (thermal->tshut_temp > INT_MAX) {
+ if (!(thermal->tshut_temp < INT_MAX)) {
dev_err(dev, "Invalid tshut temperature specified: %d\n",
thermal->tshut_temp);
return -ERANGE;
--
1.9.1

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/