[PATCH v2 1/2] PCI: endpoint: Improve pci_epf_type_add_cfs()

[Damien Le Moal <dlemoal@kernel.org>]

pci_epf_type_add_cfs() should not be called with an unbound EPF device,
that is, an epf device with epf->driver not set. For such case, replace
the NULL return in pci_epf_type_add_cfs() with a clear ERR_PTR(-ENODEV)
pointer error return.

Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
---
 drivers/pci/endpoint/pci-ep-cfs.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/pci/endpoint/pci-ep-cfs.c b/drivers/pci/endpoint/pci-ep-cfs.c
index 0fb6c376166f..0bf5be986e9b 100644
--- a/drivers/pci/endpoint/pci-ep-cfs.c
+++ b/drivers/pci/endpoint/pci-ep-cfs.c
@@ -516,7 +516,7 @@ static struct config_group *pci_epf_type_add_cfs(struct pci_epf *epf,
 
 	if (!epf->driver) {
 		dev_err(&epf->dev, "epf device not bound to driver\n");
-		return NULL;
+		return ERR_PTR(-ENODEV);
 	}
 
 	if (!epf->driver->ops->add_cfs)
-- 
2.40.1