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powerpc/spe: Mark expected switch fall-throughs 

Mark switch cases where we are expecting to fall through.

Fixes errors such as below, seen with mpc85xx_defconfig:

  arch/powerpc/kernel/align.c: In function 'emulate_spe':
  arch/powerpc/kernel/align.c:178:8: error: this statement may fall through
    ret |= __get_user_inatomic(temp.v[3], p++);
        ^~

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20190730141917.21817-1-mpe@ellerman.id.au
This commit is contained in:
Michael Ellerman 2019-07-31 00:00:15 +10:00
parent da1115fdbd
commit 7db57e7758
1 changed files with 4 additions and 0 deletions
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4
arch/powerpc/kernel/align.c
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@ -176,9 +176,11 @@ static int emulate_spe(struct pt_regs *regs, unsigned int reg,
ret |= __get_user_inatomic(temp.v[1], p++); ret |= __get_user_inatomic(temp.v[1], p++);
ret |= __get_user_inatomic(temp.v[2], p++); ret |= __get_user_inatomic(temp.v[2], p++);
ret |= __get_user_inatomic(temp.v[3], p++); ret |= __get_user_inatomic(temp.v[3], p++);
/* fall through */
case 4: case 4:
ret |= __get_user_inatomic(temp.v[4], p++); ret |= __get_user_inatomic(temp.v[4], p++);
ret |= __get_user_inatomic(temp.v[5], p++); ret |= __get_user_inatomic(temp.v[5], p++);
/* fall through */
case 2: case 2:
ret |= __get_user_inatomic(temp.v[6], p++); ret |= __get_user_inatomic(temp.v[6], p++);
ret |= __get_user_inatomic(temp.v[7], p++); ret |= __get_user_inatomic(temp.v[7], p++);
@ -259,9 +261,11 @@ static int emulate_spe(struct pt_regs *regs, unsigned int reg,
ret |= __put_user_inatomic(data.v[1], p++); ret |= __put_user_inatomic(data.v[1], p++);
ret |= __put_user_inatomic(data.v[2], p++); ret |= __put_user_inatomic(data.v[2], p++);
ret |= __put_user_inatomic(data.v[3], p++); ret |= __put_user_inatomic(data.v[3], p++);
/* fall through */
case 4: case 4:
ret |= __put_user_inatomic(data.v[4], p++); ret |= __put_user_inatomic(data.v[4], p++);
ret |= __put_user_inatomic(data.v[5], p++); ret |= __put_user_inatomic(data.v[5], p++);
/* fall through */
case 2: case 2:
ret |= __put_user_inatomic(data.v[6], p++); ret |= __put_user_inatomic(data.v[6], p++);
ret |= __put_user_inatomic(data.v[7], p++); ret |= __put_user_inatomic(data.v[7], p++);