hwmon: Prevent some divide by zeros in FAN_TO_REG()

[firefly-linux-kernel-4.4.55.git] / drivers / hwmon / sis5595.c

diff --git a/drivers/hwmon/sis5595.c b/drivers/hwmon/sis5595.c
index 1404e6319deb3cf918c1874f1be8b09b85902d65..72a889702f0dc091b895f653ce39a540aa40bf3b 100644 (file)
--- a/drivers/hwmon/sis5595.c
+++ b/drivers/hwmon/sis5595.c
@@ -141,6 +141,8 @@ static inline u8 FAN_TO_REG(long rpm, int div)
 {
        if (rpm <= 0)
                return 255;
+       if (rpm > 1350000)
+               return 1;
        return clamp_val((1350000 + rpm * div / 2) / (rpm * div), 1, 254);
 }