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| author | Harry Ciao <qingtao.cao@windriver.com> | 2009-04-03 01:58:47 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-03 04:05:03 +0200 |
| commit | 8641a3845d066f841ca591ac1c480b13bea7d849 (patch) | |
| tree | 2d9a496c18e1b9838022816adfa3e9cf72386617 /drivers/edac | |
| parent | edac: AMD8111 driver source file (diff) | |
| download | linux-8641a3845d066f841ca591ac1c480b13bea7d849.tar.xz linux-8641a3845d066f841ca591ac1c480b13bea7d849.zip | |
edac: Add edac_pci_alloc_index()
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>
Diffstat (limited to 'drivers/edac')
| -rw-r--r-- | drivers/edac/edac_core.h | 1 | ||||
| -rw-r--r-- | drivers/edac/edac_pci.c | 14 |
2 files changed, 15 insertions, 0 deletions
diff --git a/drivers/edac/edac_core.h b/drivers/edac/edac_core.h index 3189c76fe62e..28f2c3f959b5 100644 --- a/drivers/edac/edac_core.h +++ b/drivers/edac/edac_core.h @@ -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, 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 struct edac_pci_ctl_info *edac_pci_del_device(struct device *dev); diff --git a/drivers/edac/edac_pci.c b/drivers/edac/edac_pci.c index 5d3c8083a40e..5b150aea703a 100644 --- a/drivers/edac/edac_pci.c +++ b/drivers/edac/edac_pci.c @@ -30,6 +30,7 @@ static DEFINE_MUTEX(edac_pci_ctls_mutex); static LIST_HEAD(edac_pci_list); +static atomic_t pci_indexes = ATOMIC_INIT(0); /* * edac_pci_alloc_ctl_info @@ -318,6 +319,19 @@ void edac_pci_reset_delay_period(struct edac_pci_ctl_info *pci, 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 global list and create sysfs entries associated with * edac_pci structure. |