From 1dc9b70d7d48abd8a5c6f83021f38992f3b5a77f Mon Sep 17 00:00:00 2001
From: Harry Ciao <qingtao.cao@windriver.com>
Date: Wed, 17 Jun 2009 16:27:59 -0700
Subject: edac: add edac_device_alloc_index()
Add edac_device_alloc_index(), because for MAPLE platform there may
exist several EDAC driver modules that could make use of
edac_device_ctl_info structure at the same time. The index allocation
for these structures should be taken care of by EDAC core.
[akpm@linux-foundation.org: cleanups]
Signed-off-by: Harry Ciao <qingtao.cao@windriver.com>
Cc: Doug Thompson <norsk5@yahoo.com>
Cc: Michael Ellerman <michael@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
drivers/edac/edac_device.c | 14 ++++++++++++++
1 file changed, 14 insertions(+)
(limited to 'drivers/edac/edac_device.c')
diff --git a/drivers/edac/edac_device.c b/drivers/edac/edac_device.c
index a7d2c717d03..b02a6a69a8f 100644
--- a/drivers/edac/edac_device.c
+++ b/drivers/edac/edac_device.c
@@ -490,6 +490,20 @@ void edac_device_reset_delay_period(struct edac_device_ctl_info *edac_dev,
mutex_unlock(&device_ctls_mutex);
}
+/*
+ * edac_device_alloc_index: Allocate a unique device index number
+ *
+ * Return:
+ * allocated index number
+ */
+int edac_device_alloc_index(void)
+{
+ static atomic_t device_indexes = ATOMIC_INIT(0);
+
+ return atomic_inc_return(&device_indexes) - 1;
+}
+EXPORT_SYMBOL_GPL(edac_device_alloc_index);
+
/**
* edac_device_add_device: Insert the 'edac_dev' structure into the
* edac_device global list and create sysfs entries associated with
--
cgit v1.2.3-70-g09d2