On Tue, Mar 12, 2024 at 05:13:03PM -0700, Randy Dunlap wrote: > Having an empty default: case in a switch statement causes a warning > (when using Clang; I don't see the warning when using gcc), > so add a "break;" to the default case to prevent the warning: > > drivers/ssb/main.c:1149:2: warning: label at end of compound statement is a C2x extension [-Wc2x-extensions] It is a hard error with earlier versions of clang as well: drivers/ssb/main.c:1148:10: error: label at end of compound statement: expected statement default: ^ ; 1 error generated. > Fixes: e27b02e23a70 ("ssb: drop use of non-existing CONFIG_SSB_DEBUG symbol") > Signed-off-by: Randy Dunlap <rdunlap@xxxxxxxxxxxxx> > Reported-by: kernel test robot <lkp@xxxxxxxxx> > Closes: https://lore.kernel.org/oe-kbuild-all/202403130717.TWm17FiD-lkp@xxxxxxxxx/ > Cc: Michael Büsch <m@xxxxxxx> > Cc: linux-wireless@xxxxxxxxxxxxxxx > Cc: Kalle Valo <kvalo@xxxxxxxxxx> > Cc: Johannes Berg <johannes@xxxxxxxxxxxxxxxx> > Cc: llvm@xxxxxxxxxxxxxxx Thanks for the quick fix! Reviewed-by: Nathan Chancellor <nathan@xxxxxxxxxx> > --- > drivers/ssb/main.c | 1 + > 1 file changed, 1 insertion(+) > > diff -- a/drivers/ssb/main.c b/drivers/ssb/main.c > --- a/drivers/ssb/main.c > +++ b/drivers/ssb/main.c > @@ -1144,6 +1144,7 @@ u32 ssb_dma_translation(struct ssb_devic > return SSB_PCI_DMA; > } > default: > + break; > } > return 0; > } >