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SubjectRE: [RFC PATCH v4] ACPICA/Events: Add support to ensure GPE is disabled by default for handlers.
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Hi, Kirill

Could also help to confirm if this patch can also fix the issue.
Please help to validate the 2 fix patchsets separately.

Thanks in advance.

Best regards
-Lv

> From: Zheng, Lv
> Sent: Thursday, November 20, 2014 2:45 PM
>
> 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@intel.com>
> Cc: Kirill A. Shutemov <kirill@shutemov.name>
> ---
> 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:


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