Messages in this thread Patch in this message | | | From | Bernhard Walle <> | Subject | [PATCH] misc: bmp085: Handle jiffies overflow correctly | Date | Sun, 19 Feb 2012 18:28:01 +0100 |
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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> --- drivers/misc/bmp085.c | 3 ++- 1 files changed, 2 insertions(+), 1 deletions(-)
diff --git a/drivers/misc/bmp085.c b/drivers/misc/bmp085.c index b29a2be..7cfc598 100644 --- a/drivers/misc/bmp085.c +++ b/drivers/misc/bmp085.c @@ -234,7 +234,8 @@ static s32 bmp085_get_pressure(struct bmp085_data *data, int *pressure) 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; -- 1.7.9.1
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