Messages in this thread Patch in this message | | | Date | Tue, 07 Apr 2009 17:45:50 -0600 | From | dougthompson@xmission ... | Subject | [PATCH 3/3] edac: add new core index allocator |
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From: Harry Ciao <qingtao.cao@windriver.com>
Add edac_device_alloc_index(), because for some platforms 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.
Signed-off-by: Harry Ciao <qingtao.cao@windriver.com> Signed-off-by: Doug Thompson <dougthompson@xmission.com> --- edac_core.h | 1 + edac_device.c | 13 +++++++++++++ 2 files changed, 14 insertions(+)
Index: linux-2.6.29/drivers/edac/edac_core.h =================================================================== --- linux-2.6.29.orig/drivers/edac/edac_core.h +++ linux-2.6.29/drivers/edac/edac_core.h @@ -840,6 +840,7 @@ extern void edac_device_handle_ue(struct int inst_nr, int block_nr, const char *msg); extern void edac_device_handle_ce(struct edac_device_ctl_info *edac_dev, int inst_nr, int block_nr, const char *msg); +extern int edac_device_alloc_index(void); /* * edac_pci APIs Index: linux-2.6.29/drivers/edac/edac_device.c =================================================================== --- linux-2.6.29.orig/drivers/edac/edac_device.c +++ linux-2.6.29/drivers/edac/edac_device.c @@ -37,6 +37,7 @@ */ static DEFINE_MUTEX(device_ctls_mutex); static LIST_HEAD(edac_device_list); +static atomic_t device_indexes = ATOMIC_INIT(0); #ifdef CONFIG_EDAC_DEBUG static void edac_device_dump_device(struct edac_device_ctl_info *edac_dev) @@ -491,6 +492,18 @@ void edac_device_reset_delay_period(stru 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) +{ + 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
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