On Mon, Jun 18, 2018 at 05:39:42PM +0200, Arnd Bergmann wrote:
The timespec structure and associated interfaces are deprecated and will be removed in the future because of the y2038 overflow.
The use of ktime_to_timespec() in timeout_to_jiffies() does not suffer from that overflow, but is easy to avoid by just converting the ktime_t into jiffies directly.
Signed-off-by: Arnd Bergmann arnd@arndb.de
drivers/gpu/drm/msm/msm_drv.h | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/msm/msm_drv.h b/drivers/gpu/drm/msm/msm_drv.h index b2da1fbf81e0..cc8977476a41 100644 --- a/drivers/gpu/drm/msm/msm_drv.h +++ b/drivers/gpu/drm/msm/msm_drv.h @@ -353,8 +353,7 @@ static inline unsigned long timeout_to_jiffies(const ktime_t *timeout) remaining_jiffies = 0; } else { ktime_t rem = ktime_sub(*timeout, now);
struct timespec ts = ktime_to_timespec(rem);remaining_jiffies = timespec_to_jiffies(&ts);
remaining_jiffies = ktime_divns(rem, NSEC_PER_SEC / HZ);
Do you need to wrap rem in ktime_to_ns() just to be safe?
Sean
} return remaining_jiffies; -- 2.9.0