USB: fix __must_check warnings in drivers/usb/host/

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

2 files changed, 8 insertions, 6 deletions

diff --git a/drivers/usb/host/ehci-dbg.c b/drivers/usb/host/ehci-dbg.c
index 9cd6270d06bc..34b7a31cd85b 100644
--- a/drivers/usb/host/ehci-dbg.c
+++ b/drivers/usb/host/ehci-dbg.c
@@ -785,10 +785,11 @@ static CLASS_DEVICE_ATTR (registers, S_IRUGO, show_registers, NULL);
 static inline void create_debug_files (struct ehci_hcd *ehci)
 {
         struct class_device *cldev = ehci_to_hcd(ehci)->self.class_dev;
+        int retval;
 
-        class_device_create_file(cldev, &class_device_attr_async);
-        class_device_create_file(cldev, &class_device_attr_periodic);
-        class_device_create_file(cldev, &class_device_attr_registers);
+        retval = class_device_create_file(cldev, &class_device_attr_async);
+        retval = class_device_create_file(cldev, &class_device_attr_periodic);
+        retval = class_device_create_file(cldev, &class_device_attr_registers);
 }
 
 static inline void remove_debug_files (struct ehci_hcd *ehci)
diff --git a/drivers/usb/host/ohci-dbg.c b/drivers/usb/host/ohci-dbg.c
index 534d07dcb824..8293c1d4be3f 100644
--- a/drivers/usb/host/ohci-dbg.c
+++ b/drivers/usb/host/ohci-dbg.c
@@ -685,10 +685,11 @@ static CLASS_DEVICE_ATTR (registers, S_IRUGO, show_registers, NULL);
 static inline void create_debug_files (struct ohci_hcd *ohci)
 {
         struct class_device *cldev = ohci_to_hcd(ohci)->self.class_dev;
+        int retval;
 
-        class_device_create_file(cldev, &class_device_attr_async);
-        class_device_create_file(cldev, &class_device_attr_periodic);
-        class_device_create_file(cldev, &class_device_attr_registers);
+        retval = class_device_create_file(cldev, &class_device_attr_async);
+        retval = class_device_create_file(cldev, &class_device_attr_periodic);
+        retval = class_device_create_file(cldev, &class_device_attr_registers);
         ohci_dbg (ohci, "created debug files\n");
 }