PCI: fix __must_check warnings

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 14 insertions, 2 deletions

diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index c5a58d1c6c1c..a3b0a5eb5054 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -339,6 +339,7 @@ pci_alloc_child_bus(struct pci_bus *parent, struct pci_dev *bridge, int busnr)
 {
         struct pci_bus *child;
         int i;
+        int retval;
 
         /*
          * Allocate a new bus, and inherit stuff from the parent..
@@ -356,8 +357,13 @@ pci_alloc_child_bus(struct pci_bus *parent, struct pci_dev *bridge, int busnr)
 
         child->class_dev.class = &pcibus_class;
         sprintf(child->class_dev.class_id, "%04x:%02x", pci_domain_nr(child), busnr);
-        class_device_register(&child->class_dev);
-        class_device_create_file(&child->class_dev, &class_device_attr_cpuaffinity);
+        retval = class_device_register(&child->class_dev);
+        if (retval)
+                goto error_register;
+        retval = class_device_create_file(&child->class_dev,
+                                          &class_device_attr_cpuaffinity);
+        if (retval)
+                goto error_file_create;
 
         /*
          * Set up the primary, secondary and subordinate
@@ -375,6 +381,12 @@ pci_alloc_child_bus(struct pci_bus *parent, struct pci_dev *bridge, int busnr)
         bridge->subordinate = child;
 
         return child;
+
+error_file_create:
+        class_device_unregister(&child->class_dev);
+error_register:
+        kfree(child);
+        return NULL;
 }
 
 struct pci_bus * __devinit pci_add_new_bus(struct pci_bus *parent, struct pci_dev *dev, int busnr)