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edac: Add edac_pci_alloc_index()

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Add edac_pci_alloc_index(), because for MAPLE platform there may exist
several EDAC driver modules that could make use of edac_pci_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>
Cc: Doug Thompson <norsk5@yahoo.com>
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
2009-04-02 16:58:47 -07:00
committed by Linus Torvalds
parent 697dab6484
commit 8641a3845d
2 changed files with 15 additions and 0 deletions
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1
drivers/edac/edac_core.h
View File

@@ -844,6 +844,7 @@ extern void edac_pci_free_ctl_info(struct edac_pci_ctl_info *pci);
extern void edac_pci_reset_delay_period(struct edac_pci_ctl_info *pci, extern void edac_pci_reset_delay_period(struct edac_pci_ctl_info *pci,
unsigned long value); unsigned long value);
extern int edac_pci_alloc_index(void);
extern int edac_pci_add_device(struct edac_pci_ctl_info *pci, int edac_idx); extern int edac_pci_add_device(struct edac_pci_ctl_info *pci, int edac_idx);
extern struct edac_pci_ctl_info *edac_pci_del_device(struct device *dev); extern struct edac_pci_ctl_info *edac_pci_del_device(struct device *dev);

14
drivers/edac/edac_pci.c
View File

@@ -30,6 +30,7 @@
static DEFINE_MUTEX(edac_pci_ctls_mutex); static DEFINE_MUTEX(edac_pci_ctls_mutex);
static LIST_HEAD(edac_pci_list); static LIST_HEAD(edac_pci_list);
static atomic_t pci_indexes = ATOMIC_INIT(0);
/* /*
* edac_pci_alloc_ctl_info * edac_pci_alloc_ctl_info
@@ -317,6 +318,19 @@ void edac_pci_reset_delay_period(struct edac_pci_ctl_info *pci,
} }
EXPORT_SYMBOL_GPL(edac_pci_reset_delay_period); EXPORT_SYMBOL_GPL(edac_pci_reset_delay_period);
/*
* edac_pci_alloc_index: Allocate a unique PCI index number
*
* Return:
* allocated index number
*
*/
int edac_pci_alloc_index(void)
{
return atomic_inc_return(&pci_indexes) - 1;
}
EXPORT_SYMBOL_GPL(edac_pci_alloc_index);
/* /*
* edac_pci_add_device: Insert the 'edac_dev' structure into the * edac_pci_add_device: Insert the 'edac_dev' structure into the
* edac_pci global list and create sysfs entries associated with * edac_pci global list and create sysfs entries associated with