powerpc/eeh: Use debugfs_create_u32 for eeh_max_freezes

There's no need to the custom getter/setter functions so we should remove
them in favour of using the generic one. While we're here, change the type
of eeh_max_freeze to u32 and print the value in decimal rather than
hex because printing it in hex makes no sense.

Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Reviewed-by: Sam Bobroff <sbobroff@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

arch/powerpc/include/asm/eeh.h

@@ -219,7 +219,7 @@ struct eeh_ops {
 };
 
 extern int eeh_subsystem_flags;
-extern int eeh_max_freezes;
+extern u32 eeh_max_freezes;
 extern struct eeh_ops *eeh_ops;
 extern raw_spinlock_t confirm_error_lock;
 

arch/powerpc/kernel/eeh.c

@@ -109,7 +109,7 @@ EXPORT_SYMBOL(eeh_subsystem_flags);
  * frozen count in last hour exceeds this limit, the PE will
  * be forced to be offline permanently.
  */
-int eeh_max_freezes = 5;
+u32 eeh_max_freezes = 5;
 
 /* Platform dependent EEH operations */
 struct eeh_ops *eeh_ops = NULL;
@@ -1829,22 +1829,8 @@ static int eeh_enable_dbgfs_get(void *data, u64 *val)
 	return 0;
 }
 
-static int eeh_freeze_dbgfs_set(void *data, u64 val)
-{
-	eeh_max_freezes = val;
-	return 0;
-}
-
-static int eeh_freeze_dbgfs_get(void *data, u64 *val)
-{
-	*val = eeh_max_freezes;
-	return 0;
-}
-
 DEFINE_DEBUGFS_ATTRIBUTE(eeh_enable_dbgfs_ops, eeh_enable_dbgfs_get,
 			 eeh_enable_dbgfs_set, "0x%llx\n");
-DEFINE_DEBUGFS_ATTRIBUTE(eeh_freeze_dbgfs_ops, eeh_freeze_dbgfs_get,
-			 eeh_freeze_dbgfs_set, "0x%llx\n");
 #endif
 
 static int __init eeh_init_proc(void)
@@ -1855,9 +1841,8 @@ static int __init eeh_init_proc(void)
 		debugfs_create_file_unsafe("eeh_enable", 0600,
 					   powerpc_debugfs_root, NULL,
 					   &eeh_enable_dbgfs_ops);
-		debugfs_create_file_unsafe("eeh_max_freezes", 0600,
-					   powerpc_debugfs_root, NULL,
-					   &eeh_freeze_dbgfs_ops);
+		debugfs_create_u32("eeh_max_freezes", 0600,
+				powerpc_debugfs_root, &eeh_max_freezes);
 #endif
 	}