x86/fpu/math-emu: Address fallthrough warnings

/home/tglx/work/kernel/linus/linux/arch/x86/math-emu/errors.c: In function ‘FPU_printall’:
/home/tglx/work/kernel/linus/linux/arch/x86/math-emu/errors.c:187:9: warning: this statement may fall through [-Wimplicit-fallthrough=]
    tagi = FPU_Special(r);
    ~~~~~^~~~~~~~~~~~~~~~
/home/tglx/work/kernel/linus/linux/arch/x86/math-emu/errors.c:188:3: note: here
   case TAG_Valid:
   ^~~~
/home/tglx/work/kernel/linus/linux/arch/x86/math-emu/fpu_trig.c: In function ‘fyl2xp1’:
/home/tglx/work/kernel/linus/linux/arch/x86/math-emu/fpu_trig.c:1353:7: warning: this statement may fall through [-Wimplicit-fallthrough=]
    if (denormal_operand() < 0)
       ^
/home/tglx/work/kernel/linus/linux/arch/x86/math-emu/fpu_trig.c:1356:3: note: here
   case TAG_Zero:

Remove the pointless 'break;' after 'continue;' while at it.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

2 files changed, 4 insertions, 3 deletions

diff --git a/arch/x86/math-emu/errors.c b/arch/x86/math-emu/errors.c
index 6b468517ab71..73dc66d887f3 100644
--- a/arch/x86/math-emu/errors.c
+++ b/arch/x86/math-emu/errors.c
@@ -178,13 +178,15 @@ void FPU_printall(void)
         for (i = 0; i < 8; i++) {
                 FPU_REG *r = &st(i);
                 u_char tagi = FPU_gettagi(i);
+
                 switch (tagi) {
                 case TAG_Empty:
                         continue;
-                        break;
                 case TAG_Zero:
                 case TAG_Special:
+                        /* Update tagi for the printk below */
                         tagi = FPU_Special(r);
+                        /* fall through */
                 case TAG_Valid:
                         printk("st(%d)  %c .%04lx %04lx %04lx %04lx e%+-6d ", i,
                                getsign(r) ? '-' : '+',
@@ -198,7 +200,6 @@ void FPU_printall(void)
                         printk("Whoops! Error in errors.c: tag%d is %d ", i,
                                tagi);
                         continue;
-                        break;
                 }
                 printk("%s\n", tag_desc[(int)(unsigned)tagi]);
         }
diff --git a/arch/x86/math-emu/fpu_trig.c b/arch/x86/math-emu/fpu_trig.c
index 783c509f957a..127ea54122d7 100644
--- a/arch/x86/math-emu/fpu_trig.c
+++ b/arch/x86/math-emu/fpu_trig.c
@@ -1352,7 +1352,7 @@ static void fyl2xp1(FPU_REG *st0_ptr, u_char st0_tag)
                 case TW_Denormal:
                         if (denormal_operand() < 0)
                                 return;
-
+                        /* fall through */
                 case TAG_Zero:
                 case TAG_Valid:
                         setsign(st0_ptr, getsign(st0_ptr) ^ getsign(st1_ptr));