PCI: fix __must_check warnings

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

1 files changed, 4 insertions, 1 deletions

diff --git a/drivers/pci/pci-driver.c b/drivers/pci/pci-driver.c
index d8ace1f90dd2..309629e03bae 100644
--- a/drivers/pci/pci-driver.c
+++ b/drivers/pci/pci-driver.c
@@ -56,6 +56,7 @@ store_new_id(struct device_driver *driver, const char *buf, size_t count)
                 subdevice=PCI_ANY_ID, class=0, class_mask=0;
         unsigned long driver_data=0;
         int fields=0;
+        int retval = 0;
 
         fields = sscanf(buf, "%x %x %x %x %x %x %lux",
                         &vendor, &device, &subvendor, &subdevice,
@@ -82,10 +83,12 @@ store_new_id(struct device_driver *driver, const char *buf, size_t count)
         spin_unlock(&pdrv->dynids.lock);
 
         if (get_driver(&pdrv->driver)) {
-                driver_attach(&pdrv->driver);
+                retval = driver_attach(&pdrv->driver);
                 put_driver(&pdrv->driver);
         }
 
+        if (retval)
+                return retval;
         return count;
 }
 static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);