diff options
| author | Takashi YOSHII <takashi.yoshii.ze@hitachi.com> | 2007-03-12 15:33:22 +0900 |
|---|---|---|
| committer | Paul Mundt <lethal@hera.kernel.org> | 2007-05-07 02:10:53 +0000 |
| commit | f6072896e3f4c577db7e3a06105ebdfd52d7e7c9 (patch) | |
| tree | 7b597df6cd926953c8898a4c0ca121095d2da061 /arch/sh/drivers/heartbeat.c | |
| parent | f987fc880d191bf2ef66ac17e9d524aee6afa02e (diff) | |
| download | linux-f6072896e3f4c577db7e3a06105ebdfd52d7e7c9.tar.gz | |
sh: heartbeat double 0 fix.
This implements stricter and more compliant knightrider strobing in the heartbeat handler. While there still seems to be some debate as to whether the double 0 is "more" correct or not, this updated version appears to have general consensus. Fixes a long-term "bug". Signed-off-by: Takashi YOSHII <takashi.yoshii.ze@hitachi.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
Diffstat (limited to 'arch/sh/drivers/heartbeat.c')
| -rw-r--r-- | arch/sh/drivers/heartbeat.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/arch/sh/drivers/heartbeat.c b/arch/sh/drivers/heartbeat.c index bc59cb6cd78b..23dd6080422f 100644 --- a/arch/sh/drivers/heartbeat.c +++ b/arch/sh/drivers/heartbeat.c @@ -40,16 +40,9 @@ static void heartbeat_timer(unsigned long data) static unsigned bit = 0, up = 1; ctrl_outw(1 << hd->bit_pos[bit], (unsigned long)hd->base); - if (up) - if (bit == (ARRAY_SIZE(hd->bit_pos) - 1)) { - bit--; - up = 0; - } else - bit++; - else if (bit == 0) - up = 1; - else - bit--; + bit += up; + if ((bit == 0) || (bit == ARRAY_SIZE(hd->bit_pos)-1)) + up = -up; mod_timer(&hd->timer, jiffies + (110 - ((300 << FSHIFT) / ((avenrun[0] / 5) + (3 << FSHIFT))))); |