4.20-stable review patch. If anyone has any objections, please let me know.
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From: Gustavo A. R. Silva gustavo@embeddedor.com
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: stable@vger.kernel.org Signed-off-by: Gustavo A. R. Silva gustavo@embeddedor.com Reviewed-by: Ian Abbott abbotti@mev.co.uk Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- 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 @@ -656,6 +656,7 @@ static int ni_660x_set_pfi_routing(struc case NI_660X_PFI_OUTPUT_DIO: if (chan > 31) return -EINVAL; + break; default: return -EINVAL; }