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| author | Kevin O'Connor <kevin@koconnor.net> | 2010-07-26 22:33:54 -0400 |
|---|---|---|
| committer | Kevin O'Connor <kevin@koconnor.net> | 2010-07-26 22:33:54 -0400 |
| commit | abf31d367a8e80a13cb6d2a8a6c499914c2e91e7 (patch) | |
| tree | 5631dff26b005399692c4a6103a451237ca49af6 | |
| parent | 1d5c333e224cc95fb12563d8437abfeadda7734a (diff) | |
| download | seabios-abf31d367a8e80a13cb6d2a8a6c499914c2e91e7.zip seabios-abf31d367a8e80a13cb6d2a8a6c499914c2e91e7.tar.gz seabios-abf31d367a8e80a13cb6d2a8a6c499914c2e91e7.tar.bz2 | |
Fix integer truncating bug in calc_future_timer().
Be sure to promote to u64 before multiplication.
| -rw-r--r-- | src/clock.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/clock.c b/src/clock.c index 49ab901..6d46501 100644 --- a/src/clock.c +++ b/src/clock.c @@ -1,6 +1,6 @@ // 16bit code to handle system clocks. // -// Copyright (C) 2008 Kevin O'Connor <kevin@koconnor.net> +// Copyright (C) 2008-2010 Kevin O'Connor <kevin@koconnor.net> // Copyright (C) 2002 MandrakeSoft S.A. // // This file may be distributed under the terms of the GNU LGPLv3 license. @@ -238,7 +238,7 @@ calc_future_timer(u32 msecs) { if (!msecs) return GET_BDA(timer_counter); - u32 kticks = DIV_ROUND_UP((u64)(msecs * PIT_TICK_RATE), PIT_TICK_INTERVAL); + u32 kticks = DIV_ROUND_UP((u64)msecs * PIT_TICK_RATE, PIT_TICK_INTERVAL); u32 ticks = DIV_ROUND_UP(kticks, 1000); return calc_future_timer_ticks(ticks); } |