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| author | Harry Ciao <qingtao.cao@windriver.com> | 2009-06-18 01:27:59 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-06-18 22:03:56 +0200 |
| commit | 1dc9b70d7d48abd8a5c6f83021f38992f3b5a77f (patch) | |
| tree | f4e3544c20b432d727a1c96f80eafb716a0f5966 /drivers/edac/edac_device.c | |
| parent | edac: add CPC925 Memory Controller driver (diff) | |
| download | linux-1dc9b70d7d48abd8a5c6f83021f38992f3b5a77f.tar.xz linux-1dc9b70d7d48abd8a5c6f83021f38992f3b5a77f.zip | |
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.c | 14 |
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 |