nds32: Mark expected switch fall-throughs

Mark switch cases where we are expecting to fall through.

This patch fixes the following warnings (Building: allmodconfig nds32):

include/math-emu/soft-fp.h:124:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
arch/nds32/kernel/signal.c:362:20: warning: this statement may fall through [-Wimplicit-fallthrough=]
arch/nds32/kernel/signal.c:315:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:417:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:430:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:310:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:320:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:310:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:320:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/soft-fp.h:124:8: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:417:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:430:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:310:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:320:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:310:11: warning: this statement may fall through [-Wimplicit-fallthrough=]
include/math-emu/op-common.h:320:11: warning: this statement may fall through [-Wimplicit-fallthrough=]

Reported-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>

diff --git a/arch/nds32/kernel/signal.c b/arch/nds32/kernel/signal.c
index fe61513..330b19f 100644 (file)
--- a/arch/nds32/kernel/signal.c
+++ b/arch/nds32/kernel/signal.c
@@ -316,6 +316,7 @@ static void handle_signal(struct ksignal *ksig, struct pt_regs *regs)
                                regs->uregs[0] = -EINTR;
                                break;
                        }
+                       /* Else, fall through */
                case -ERESTARTNOINTR:
                        regs->uregs[0] = regs->orig_r0;
                        regs->ipc -= 4;
@@ -360,6 +361,7 @@ static void do_signal(struct pt_regs *regs)
                switch (regs->uregs[0]) {
                case -ERESTART_RESTARTBLOCK:
                        regs->uregs[15] = __NR_restart_syscall;
+                       /* Fall through */
                case -ERESTARTNOHAND:
                case -ERESTARTSYS:
                case -ERESTARTNOINTR:

diff --git a/include/math-emu/op-common.h b/include/math-emu/op-common.h
index f37d128..adcc6a9 100644 (file)
--- a/include/math-emu/op-common.h
+++ b/include/math-emu/op-common.h
@@ -308,6 +308,7 @@ do {                                                                             \
                                                                             \
   case _FP_CLS_COMBINE(FP_CLS_NORMAL,FP_CLS_ZERO):                          \
     R##_e = X##_e;                                                          \
+         /* Fall through */                                                 \
   case _FP_CLS_COMBINE(FP_CLS_NAN,FP_CLS_NORMAL):                           \
   case _FP_CLS_COMBINE(FP_CLS_NAN,FP_CLS_INF):                              \
   case _FP_CLS_COMBINE(FP_CLS_NAN,FP_CLS_ZERO):                                     \
@@ -318,6 +319,7 @@ do {                                                                             \
                                                                             \
   case _FP_CLS_COMBINE(FP_CLS_ZERO,FP_CLS_NORMAL):                          \
     R##_e = Y##_e;                                                          \
+         /* Fall through */                                                 \
   case _FP_CLS_COMBINE(FP_CLS_NORMAL,FP_CLS_NAN):                           \
   case _FP_CLS_COMBINE(FP_CLS_INF,FP_CLS_NAN):                              \
   case _FP_CLS_COMBINE(FP_CLS_ZERO,FP_CLS_NAN):                                     \
@@ -415,6 +417,7 @@ do {                                                        \
   case _FP_CLS_COMBINE(FP_CLS_NAN,FP_CLS_INF):         \
   case _FP_CLS_COMBINE(FP_CLS_NAN,FP_CLS_ZERO):                \
     R##_s = X##_s;                                     \
+       /* Fall through */                              \
                                                        \
   case _FP_CLS_COMBINE(FP_CLS_INF,FP_CLS_INF):         \
   case _FP_CLS_COMBINE(FP_CLS_INF,FP_CLS_NORMAL):      \
@@ -428,6 +431,7 @@ do {                                                        \
   case _FP_CLS_COMBINE(FP_CLS_INF,FP_CLS_NAN):         \
   case _FP_CLS_COMBINE(FP_CLS_ZERO,FP_CLS_NAN):                \
     R##_s = Y##_s;                                     \
+       /* Fall through */                              \
                                                        \
   case _FP_CLS_COMBINE(FP_CLS_NORMAL,FP_CLS_INF):      \
   case _FP_CLS_COMBINE(FP_CLS_NORMAL,FP_CLS_ZERO):     \
@@ -493,6 +497,7 @@ do {                                                        \
                                                        \
   case _FP_CLS_COMBINE(FP_CLS_NORMAL,FP_CLS_ZERO):     \
     FP_SET_EXCEPTION(FP_EX_DIVZERO);                   \
+         /* Fall through */                            \
   case _FP_CLS_COMBINE(FP_CLS_INF,FP_CLS_ZERO):                \
   case _FP_CLS_COMBINE(FP_CLS_INF,FP_CLS_NORMAL):      \
     R##_c = FP_CLS_INF;                                        \