From 2d8ce8c9d4b25b88eb4aa6bc52492eb7e0ae1dab Mon Sep 17 00:00:00 2001
From: Sreekanth Reddy <sreekanth.reddy@avagotech.com>
Date: Mon, 12 Jan 2015 11:38:56 +0530
Subject: [PATCH] mpt2sas, mpt3sas: log exceeded temperature thresholds

This patch will log a message when driver receives "Temperature Threshold
exceeded" event from any temperature sensor.

The message will look similar to like:
mpt3sas0: Temperature Threshold flags a b c d exceeded for Sensor: x !!!
mpt3sas0: Current Temp In Celsius: y

where a b c d are threshold flags 0 1 2 3

Change_set:
1. Get the number of sensor count of this IOC by reading IO Unit page 8 at
   driver initialization time.
2. Also unmask the Temperature Threshold Event at driver initialization
   time
3. Whenever a MPI2_EVENT_TEMP_THRESHOLD event is received from the
   firmware, then print the sensor number, the maximum threshold number it
   has exceed and the current temperature of this sensor.

Signed-off-by: Sreekanth Reddy <Sreekanth.Reddy@avagotech.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
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