On some platforms, GPE is not disabled by default after ACPI hardware is enabled. This confuses GPE drivers. This patch adds support to disable GPE by default for GPE handler drivers. Signed-off-by: Lv Zheng <lv.zheng@xxxxxxxxx> Cc: Kirill A. Shutemov <kirill@xxxxxxxxxxxxx> --- drivers/acpi/acpica/evxface.c | 7 +++++++ 1 file changed, 7 insertions(+) Index: linux-acpica/drivers/acpi/acpica/evxface.c =================================================================== --- linux-acpica.orig/drivers/acpi/acpica/evxface.c +++ linux-acpica/drivers/acpi/acpica/evxface.c @@ -821,6 +821,14 @@ acpi_install_gpe_handler(acpi_handle gpe ~(ACPI_GPE_XRUPT_TYPE_MASK | ACPI_GPE_DISPATCH_MASK); gpe_event_info->flags |= (u8)(type | ACPI_GPE_DISPATCH_HANDLER); + /* + * Make sure that the GPE is disabled by default for the GPE + * handler driver. It is expected that the GPE handler driver + * should invoke acpi_enable_gpe() after installing the GPE + * handler. + */ + (void)acpi_hw_low_set_gpe(gpe_event_info, ACPI_GPE_DISABLE); + acpi_os_release_lock(acpi_gbl_gpe_lock, flags); unlock_and_exit: -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
