From 5a447f09a8dffc0dd7569aec614ad3613a050098 Mon Sep 17 00:00:00 2001 From: Thomas Gleixner Date: Mon, 13 Apr 2015 21:02:25 +0000 Subject: [PATCH] staging: ozwpan: Fix hrtimer wreckage oz_timer_add() modifies the expiry value of an active timer, which results in data corruption. Use hrtimer_start() and remove the silly conditional. While at it use the proper helper function to convert milliseconds to ktime. Signed-off-by: Thomas Gleixner Cc: Peter Zijlstra Cc: Shigekatsu Tateno Acked-by: Greg Kroah-Hartman Cc: devel@driverdev.osuosl.org Link: http://lkml.kernel.org/r/20150413210035.357448657@linutronix.de --- drivers/staging/ozwpan/ozproto.c | 17 ++++------------- 1 file changed, 4 insertions(+), 13 deletions(-) diff --git a/drivers/staging/ozwpan/ozproto.c b/drivers/staging/ozwpan/ozproto.c index 1ba24a2aef83..23aa8179c6fc 100644 --- a/drivers/staging/ozwpan/ozproto.c +++ b/drivers/staging/ozwpan/ozproto.c @@ -566,23 +566,14 @@ void oz_timer_add(struct oz_pd *pd, int type, unsigned long due_time) switch (type) { case OZ_TIMER_TOUT: case OZ_TIMER_STOP: - if (hrtimer_active(&pd->timeout)) { - hrtimer_set_expires(&pd->timeout, ktime_set(due_time / - MSEC_PER_SEC, (due_time % MSEC_PER_SEC) * - NSEC_PER_MSEC)); - hrtimer_start_expires(&pd->timeout, HRTIMER_MODE_REL); - } else { - hrtimer_start(&pd->timeout, ktime_set(due_time / - MSEC_PER_SEC, (due_time % MSEC_PER_SEC) * - NSEC_PER_MSEC), HRTIMER_MODE_REL); - } + hrtimer_start(&pd->timeout, ms_to_ktime(due_time), + HRTIMER_MODE_REL); pd->timeout_type = type; break; case OZ_TIMER_HEARTBEAT: if (!hrtimer_active(&pd->heartbeat)) - hrtimer_start(&pd->heartbeat, ktime_set(due_time / - MSEC_PER_SEC, (due_time % MSEC_PER_SEC) * - NSEC_PER_MSEC), HRTIMER_MODE_REL); + hrtimer_start(&pd->heartbeat, ms_to_ktime(due_time), + HRTIMER_MODE_REL); break; } spin_unlock_bh(&g_polling_lock); -- 2.20.1