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authorHarry Ciao <qingtao.cao@windriver.com>2009-06-18 03:27:59 +0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-06-19 00:03:56 +0400
commit1dc9b70d7d48abd8a5c6f83021f38992f3b5a77f (patch)
treef4e3544c20b432d727a1c96f80eafb716a0f5966 /drivers/edac/edac_device.c
parent2a9036afffb3a174e980f90eb507c5aea6b540f6 (diff)
downloadlinux-1dc9b70d7d48abd8a5c6f83021f38992f3b5a77f.tar.xz
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>
Diffstat (limited to 'drivers/edac/edac_device.c')
-rw-r--r--drivers/edac/edac_device.c14
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/edac/edac_device.c b/drivers/edac/edac_device.c
index a7d2c717d033..b02a6a69a8f0 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