4.9-stable review patch. If anyone has any objections, please let me know.
------------------ From: Gustavo A. R. Silva <[email protected]> commit 479826cc86118e0d87e5cefb3df5b748e0480924 upstream. Add missing break statement in order to prevent the code from falling through to the default case and return -EINVAL every time. This bug was found thanks to the ongoing efforts to enable -Wimplicit-fallthrough. Fixes: aa94f2888825 ("staging: comedi: ni_660x: tidy up ni_660x_set_pfi_routing()") Cc: [email protected] Signed-off-by: Gustavo A. R. Silva <[email protected]> Reviewed-by: Ian Abbott <[email protected]> Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/staging/comedi/drivers/ni_660x.c | 1 + 1 file changed, 1 insertion(+) --- a/drivers/staging/comedi/drivers/ni_660x.c +++ b/drivers/staging/comedi/drivers/ni_660x.c @@ -606,6 +606,7 @@ static int ni_660x_set_pfi_routing(struc case NI_660X_PFI_OUTPUT_DIO: if (chan > 31) return -EINVAL; + break; default: return -EINVAL; }
