IPMI: Convert system interface defines to an enum

Convert the #defines for statistics into an enum in the IPMI system interface
and remove the unused timeout_restart statistic.  And comment what these
statistics mean.

Signed-off-by: Corey Minyard <cminyard@mvista.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 43 insertions, 17 deletions

diff --git a/drivers/char/ipmi/ipmi_si_intf.c b/drivers/char/ipmi/ipmi_si_intf.c
index 286c042a0c66..ba7e75b731c6 100644
--- a/drivers/char/ipmi/ipmi_si_intf.c
+++ b/drivers/char/ipmi/ipmi_si_intf.c
@@ -124,22 +124,50 @@ static struct device_driver ipmi_driver =
 /*
  * Indexes into stats[] in smi_info below.
  */
+enum si_stat_indexes {
+        /*
+         * Number of times the driver requested a timer while an operation
+         * was in progress.
+         */
+        SI_STAT_short_timeouts = 0,
+
+        /*
+         * Number of times the driver requested a timer while nothing was in
+         * progress.
+         */
+        SI_STAT_long_timeouts,
+
+        /* Number of times the interface was idle while being polled. */
+        SI_STAT_idles,
+
+        /* Number of interrupts the driver handled. */
+        SI_STAT_interrupts,
+
+        /* Number of time the driver got an ATTN from the hardware. */
+        SI_STAT_attentions,
 
-#define SI_STAT_short_timeouts          0
-#define SI_STAT_long_timeouts           1
-#define SI_STAT_timeout_restarts        2
-#define SI_STAT_idles                   3
-#define SI_STAT_interrupts              4
-#define SI_STAT_attentions              5
-#define SI_STAT_flag_fetches            6
-#define SI_STAT_hosed_count             7
-#define SI_STAT_complete_transactions   8
-#define SI_STAT_events                  9
-#define SI_STAT_watchdog_pretimeouts    10
-#define SI_STAT_incoming_messages       11
-
-/* If you add a stat, you must update this value. */
-#define SI_NUM_STATS                    12
+        /* Number of times the driver requested flags from the hardware. */
+        SI_STAT_flag_fetches,
+
+        /* Number of times the hardware didn't follow the state machine. */
+        SI_STAT_hosed_count,
+
+        /* Number of completed messages. */
+        SI_STAT_complete_transactions,
+
+        /* Number of IPMI events received from the hardware. */
+        SI_STAT_events,
+
+        /* Number of watchdog pretimeouts. */
+        SI_STAT_watchdog_pretimeouts,
+
+        /* Number of asyncronous messages received. */
+        SI_STAT_incoming_messages,
+
+
+        /* This *must* remain last, add new values above this. */
+        SI_NUM_STATS
+};
 
 struct smi_info
 {
@@ -2399,8 +2427,6 @@ static int stat_file_read_proc(char *page, char **start, off_t off,
                        smi_get_stat(smi, short_timeouts));
         out += sprintf(out, "long_timeouts:         %u\n",
                        smi_get_stat(smi, long_timeouts));
-        out += sprintf(out, "timeout_restarts:      %u\n",
-                       smi_get_stat(smi, timeout_restarts));
         out += sprintf(out, "idles:                 %u\n",
                        smi_get_stat(smi, idles));
         out += sprintf(out, "interrupts:            %u\n",