On platforms with sizeof(int) < sizeof(long), writing a temperature
limit larger than MAXINT will result in unpredictable limit values
written to the chip. Avoid auto-conversion from long to int to fix
the problem.
Signed-off-by: Axel Lin <axel.lin@xxxxxxxxxx>
---
drivers/hwmon/lm77.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/hwmon/lm77.c b/drivers/hwmon/lm77.c
index 5ceb443..a9ad5cd 100644
--- a/drivers/hwmon/lm77.c
+++ b/drivers/hwmon/lm77.c
@@ -78,7 +78,7 @@ struct lm77_data {
* In the temperature registers, the low 3 bits are not part of the
* temperature values; they are the status bits.
*/
-static inline s16 LM77_TEMP_TO_REG(int temp)
+static inline s16 LM77_TEMP_TO_REG(long temp)
{
int ntemp = clamp_val(temp, LM77_TEMP_MIN, LM77_TEMP_MAX);
return (ntemp / 500) * 8;
--
1.9.1
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