From: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>
Date: Mon, 27 Jul 2015 05:55:16 +0000 (+0900)
Subject: ipmi: Don't flush messages in sender() in run-to-completion mode
X-Git-Tag: omap-for-v4.3/fixes-rc1~53^2~5
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=82802f968bd3118af04eaeb3814c21d9813be527;p=pandora-kernel.git

ipmi: Don't flush messages in sender() in run-to-completion mode

When flushing queued messages in run-to-completion mode,
smi_event_handler() is recursively called.

flush_messages()
 smi_event_handler()
  handle_transaction_done()
   deliver_recv_msg()
    ipmi_smi_msg_received()
     smi_recv_tasklet()
      sender()
       flush_messages()
        smi_event_handler()
         ...

The depth of the recursive call depends on the number of queued
messages, so it can cause a stack overflow if many messages have
been queued.

To solve this problem, this patch removes flush_messages()
from sender()@ipmi_si_intf.c.  Instead, add flush_messages() to
caller side of sender() if needed.  Additionally, to implement this,
add new handler flush_messages to struct ipmi_smi_handlers.

Signed-off-by: Hidehiro Kawai <hidehiro.kawai.ez@hitachi.com>

Fixed up a comment and some spacing issues.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
---

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