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    Subject[PATCH 4.15 02/72] ARM: 8746/1: vfp: Go back to clearing vfp_current_hw_state[]
    Date
    4.15-stable review patch.  If anyone has any objections, please let me know.

    ------------------

    From: Fabio Estevam <festevam@gmail.com>

    commit 1328f02005bbbaed15b9d5b7f3ab5ec9d4d5268a upstream.

    Commit 384b38b66947 ("ARM: 7873/1: vfp: clear vfp_current_hw_state
    for dying cpu") fixed the cpu dying notifier by clearing
    vfp_current_hw_state[]. However commit e5b61bafe704 ("arm: Convert VFP
    hotplug notifiers to state machine") incorrectly used the original
    vfp_force_reload() function in the cpu dying notifier.

    Fix it by going back to clearing vfp_current_hw_state[].

    Fixes: e5b61bafe704 ("arm: Convert VFP hotplug notifiers to state machine")
    Cc: linux-stable <stable@vger.kernel.org>
    Reported-by: Kohji Okuno <okuno.kohji@jp.panasonic.com>
    Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
    Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
    Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

    ---
    arch/arm/vfp/vfpmodule.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    --- a/arch/arm/vfp/vfpmodule.c
    +++ b/arch/arm/vfp/vfpmodule.c
    @@ -648,7 +648,7 @@ int vfp_restore_user_hwstate(struct user
    */
    static int vfp_dying_cpu(unsigned int cpu)
    {
    - vfp_force_reload(cpu, current_thread_info());
    + vfp_current_hw_state[cpu] = NULL;
    return 0;
    }


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