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    Subject[PATCH 5.16 0929/1039] powerpc/cell: Fix clang -Wimplicit-fallthrough warning
    Date
    From: Anders Roxell <anders.roxell@linaro.org>

    commit e89257e28e844f5d1d39081bb901d9f1183a7705 upstream.

    Clang warns:

    arch/powerpc/platforms/cell/pervasive.c:81:2: error: unannotated fall-through between switch labels
    case SRR1_WAKEEE:
    ^
    arch/powerpc/platforms/cell/pervasive.c:81:2: note: insert 'break;' to avoid fall-through
    case SRR1_WAKEEE:
    ^
    break;
    1 error generated.

    Clang is more pedantic than GCC, which does not warn when failing
    through to a case that is just break or return. Clang's version is more
    in line with the kernel's own stance in deprecated.rst. Add athe missing
    break to silence the warning.

    Fixes: 6e83985b0f6e ("powerpc/cbe: Do not process external or decremeter interrupts from sreset")
    Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org>
    Signed-off-by: Anders Roxell <anders.roxell@linaro.org>
    Reviewed-by: Nathan Chancellor <nathan@kernel.org>
    Reviewed-by: Arnd Bergmann <arnd@arndb.de>
    Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
    Link: https://lore.kernel.org/r/20211207110228.698956-1-anders.roxell@linaro.org
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
    ---
    arch/powerpc/platforms/cell/pervasive.c | 1 +
    1 file changed, 1 insertion(+)

    --- a/arch/powerpc/platforms/cell/pervasive.c
    +++ b/arch/powerpc/platforms/cell/pervasive.c
    @@ -78,6 +78,7 @@ static int cbe_system_reset_exception(st
    switch (regs->msr & SRR1_WAKEMASK) {
    case SRR1_WAKEDEC:
    set_dec(1);
    + break;
    case SRR1_WAKEEE:
    /*
    * Handle these when interrupts get re-enabled and we take

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