PCI: endpoint: Add an API to get matching "pci_epf_device_id"

Add an API to get "pci_epf_device_id" matching the EPF name. This can be
used by the EPF driver to get the driver data corresponding to the EPF
device name.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
[bhelgaas: folded in "while" loop termination fix from Colin Ian King
<colin.king@canonical.com>]
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>

diff --git a/drivers/pci/endpoint/pci-epf-core.c b/drivers/pci/endpoint/pci-epf-core.c
index 6877d6a..f14e2be 100644 (file)
--- a/drivers/pci/endpoint/pci-epf-core.c
+++ b/drivers/pci/endpoint/pci-epf-core.c
@@ -267,6 +267,22 @@ err_ret:
 }
 EXPORT_SYMBOL_GPL(pci_epf_create);
 
+const struct pci_epf_device_id *
+pci_epf_match_device(const struct pci_epf_device_id *id, struct pci_epf *epf)
+{
+       if (!id || !epf)
+               return NULL;
+
+       while (*id->name) {
+               if (strcmp(epf->name, id->name) == 0)
+                       return id;
+               id++;
+       }
+
+       return NULL;
+}
+EXPORT_SYMBOL_GPL(pci_epf_match_device);
+
 static void pci_epf_dev_release(struct device *dev)
 {
        struct pci_epf *epf = to_pci_epf(dev);

diff --git a/include/linux/pci-epf.h b/include/linux/pci-epf.h
index 0d529cb..6ed63b5 100644 (file)
--- a/include/linux/pci-epf.h
+++ b/include/linux/pci-epf.h
@@ -149,6 +149,8 @@ static inline void *epf_get_drvdata(struct pci_epf *epf)
        return dev_get_drvdata(&epf->dev);
 }
 
+const struct pci_epf_device_id *
+pci_epf_match_device(const struct pci_epf_device_id *id, struct pci_epf *epf);
 struct pci_epf *pci_epf_create(const char *name);
 void pci_epf_destroy(struct pci_epf *epf);
 int __pci_epf_register_driver(struct pci_epf_driver *driver,