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-rw-r--r--drivers/edac/edac_core.h1
-rw-r--r--drivers/edac/edac_pci.c14
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.