From 8641a3845d066f841ca591ac1c480b13bea7d849 Mon Sep 17 00:00:00 2001 From: Harry Ciao <qingtao.cao@windriver.com> Date: Thu, 2 Apr 2009 16:58:47 -0700 Subject: 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> --- drivers/edac/edac_core.h | 1 + drivers/edac/edac_pci.c | 14 ++++++++++++++ 2 files changed, 15 insertions(+) (limited to 'drivers') 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 @@ -317,6 +318,19 @@ 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 -- cgit v1.2.3