diff options
| author | Corey Minyard <minyard@acm.org> | 2005-11-07 01:00:02 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2005-11-07 07:53:44 -0800 |
| commit | c3e7e7916ec61cf58c88af12f4db17f28cffd83a (patch) | |
| tree | 4d5be7158f79a9a2b1572e60af5c3645afa333c2 /drivers/char/ipmi/ipmi_si_intf.c | |
| parent | 21dcd300b15f87ce10df8773d029708f27499aa7 (diff) | |
[PATCH] ipmi: kcs error0 delay
BMCs can get into ERROR0 state while flashing new firmware, particularly while
the BMC is erasing the next flash block, which may take a just under 2 seconds
on a Dell PowerEdge 2800 (1.75 seconds typical), during which time the
single-threaded firmware may not be able to process new commands. In
particular, clearing OBF may not take effect immediately.
We want it to delay in ERROR0 after clearing OBF a bit waiting for OBF to
actually be clear before proceeding.
This introduces a new return value from the LLDD's event loop,
SI_SM_CALL_WITH_TICK_DELAY. This means the calling thread/timer should
schedule_timeout() at least 1 tick, rather than busy-wait. This is a longer
delay than SI_SM_CALL_WITH_DELAY, which is typically a 250us busy-wait.
Signed-off-by: Matt Domsch <Matt_Domsch@dell.com>
Signed-off-by: Corey Minyard <minyard@acm.org>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers/char/ipmi/ipmi_si_intf.c')
| -rw-r--r-- | drivers/char/ipmi/ipmi_si_intf.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c index 2ace62b1d32..d514df7c728 100644 --- a/drivers/char/ipmi/ipmi_si_intf.c +++ b/drivers/char/ipmi/ipmi_si_intf.c @@ -1932,7 +1932,8 @@ static int try_get_dev_id(struct smi_info *smi_info) smi_result = smi_info->handlers->event(smi_info->si_sm, 0); for (;;) { - if (smi_result == SI_SM_CALL_WITH_DELAY) { + if (smi_result == SI_SM_CALL_WITH_DELAY || + smi_result == SI_SM_CALL_WITH_TICK_DELAY) { schedule_timeout_uninterruptible(1); smi_result = smi_info->handlers->event( smi_info->si_sm, 100); |