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-rw-r--r--drivers/hwmon/lm75.c8
1 files changed, 7 insertions, 1 deletions
diff --git a/drivers/hwmon/lm75.c b/drivers/hwmon/lm75.c
index 63f3b7551e9..e29b29440f2 100644
--- a/drivers/hwmon/lm75.c
+++ b/drivers/hwmon/lm75.c
@@ -179,7 +179,13 @@ int dtt_init (void)
int dtt_get_temp(int sensor)
{
- return (dtt_read(sensor, DTT_READ_TEMP) / 256);
+ int const ret = dtt_read(sensor, DTT_READ_TEMP);
+
+ if (ret < 0) {
+ printf("DTT temperature read failed.\n");
+ return 0;
+ }
+ return (int)((int16_t) ret / 256);
} /* dtt_get_temp() */
#endif /* CONFIG_DTT_LM75 */