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edac: add edac_device_alloc_index()

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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>
This commit is contained in:
Harry Ciao
2009-06-17 16:27:59 -07:00
committed by Linus Torvalds
parent 2a9036afff
commit 1dc9b70d7d
3 changed files with 16 additions and 2 deletions
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14
drivers/edac/edac_device.c
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@@ -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