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>

diff --git a/arch/x86/math-emu/errors.c b/arch/x86/math-emu/errors.c
index 6b46851..73dc66d 100644 (file)
--- 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 783c509..127ea54 100644 (file)
--- 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));