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    Subject[PATCH 3.19.y-ckt 060/164] ACPI: Using correct irq when waiting for events
    Date
    3.19.8-ckt11 -stable review patch.  If anyone has any objections, please let me know.

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

    From: Chen Yu <yu.c.chen@intel.com>

    commit efb1cf7d28b8aeacec53e9ba8f3f2809c5cb9686 upstream.

    When the system is waiting for GPE/fixed event handler to finish,
    it uses acpi_gbl_FADT.sci_interrupt directly as the IRQ number.
    However, the remapped IRQ returned by acpi_gsi_to_irq() should be
    passed to synchronize_hardirq() instead of it.

    Acked-by: Lv Zheng <lv.zheng@intel.com>
    Signed-off-by: Chen Yu <yu.c.chen@intel.com>
    Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
    Signed-off-by: Kamal Mostafa <kamal@canonical.com>
    ---
    drivers/acpi/osl.c | 4 ++--
    1 file changed, 2 insertions(+), 2 deletions(-)

    diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
    index 5c99219..c2f4fd5 100644
    --- a/drivers/acpi/osl.c
    +++ b/drivers/acpi/osl.c
    @@ -1195,8 +1195,8 @@ void acpi_os_wait_events_complete(void)
    * Make sure the GPE handler or the fixed event handler is not used
    * on another CPU after removal.
    */
    - if (acpi_irq_handler)
    - synchronize_hardirq(acpi_gbl_FADT.sci_interrupt);
    + if (acpi_sci_irq_valid())
    + synchronize_hardirq(acpi_sci_irq);
    flush_workqueue(kacpid_wq);
    flush_workqueue(kacpi_notify_wq);
    }
    --
    1.9.1


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