misc: bmp085: Handle jiffies overflow correctly
By using the time_is_before_jiffies() macro instead of normal
arithmetic, the jiffies overflow is handled correctly.
Signed-off-by: Bernhard Walle <bernhard@bwalle.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/bmp085.c b/drivers/misc/bmp085.c
index 3c534ab..b088abc 100644
--- a/drivers/misc/bmp085.c
+++ b/drivers/misc/bmp085.c
@@ -234,7 +234,8 @@
int status;
/* alt least every second force an update of the ambient temperature */
- if (data->last_temp_measurement + 1*HZ < jiffies) {
+ if (data->last_temp_measurement == 0 ||
+ time_is_before_jiffies(data->last_temp_measurement + 1*HZ)) {
status = bmp085_get_temperature(data, NULL);
if (status != 0)
goto exit;