diff options
Diffstat (limited to 'drivers/acpi/acpica/evxfgpe.c')
| -rw-r--r-- | drivers/acpi/acpica/evxfgpe.c | 61 |
1 files changed, 23 insertions, 38 deletions
diff --git a/drivers/acpi/acpica/evxfgpe.c b/drivers/acpi/acpica/evxfgpe.c index cbb1598df9dc..c80e3bdf4805 100644 --- a/drivers/acpi/acpica/evxfgpe.c +++ b/drivers/acpi/acpica/evxfgpe.c @@ -1,45 +1,11 @@ +// SPDX-License-Identifier: BSD-3-Clause OR GPL-2.0 /****************************************************************************** * * Module Name: evxfgpe - External Interfaces for General Purpose Events (GPEs) * - *****************************************************************************/ - -/* * Copyright (C) 2000 - 2018, Intel Corp. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions, and the following disclaimer, - * without modification. - * 2. Redistributions in binary form must reproduce at minimum a disclaimer - * substantially similar to the "NO WARRANTY" disclaimer below - * ("Disclaimer") and any redistribution must be conditioned upon - * including a substantially similar Disclaimer requirement for further - * binary redistribution. - * 3. Neither the names of the above-listed copyright holders nor the names - * of any contributors may be used to endorse or promote products derived - * from this software without specific prior written permission. - * - * Alternatively, this software may be distributed under the terms of the - * GNU General Public License ("GPL") version 2 as published by the Free - * Software Foundation. - * - * NO WARRANTY - * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS - * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT - * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR - * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT - * HOLDERS OR CONTRIBUTORS BE LIABLE FOR SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, - * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING - * IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE - * POSSIBILITY OF SUCH DAMAGES. - */ + * + *****************************************************************************/ #define EXPORT_ACPI_INTERFACES @@ -77,6 +43,7 @@ ACPI_MODULE_NAME("evxfgpe") acpi_status acpi_update_all_gpes(void) { acpi_status status; + u8 is_polling_needed = FALSE; ACPI_FUNCTION_TRACE(acpi_update_all_gpes); @@ -89,7 +56,8 @@ acpi_status acpi_update_all_gpes(void) goto unlock_and_exit; } - status = acpi_ev_walk_gpe_list(acpi_ev_initialize_gpe_block, NULL); + status = acpi_ev_walk_gpe_list(acpi_ev_initialize_gpe_block, + &is_polling_needed); if (ACPI_SUCCESS(status)) { acpi_gbl_all_gpes_initialized = TRUE; } @@ -97,6 +65,12 @@ acpi_status acpi_update_all_gpes(void) unlock_and_exit: (void)acpi_ut_release_mutex(ACPI_MTX_EVENTS); + if (is_polling_needed && acpi_gbl_all_gpes_initialized) { + + /* Poll GPEs to handle already triggered events */ + + acpi_ev_gpe_detect(acpi_gbl_gpe_xrupt_list_head); + } return_ACPI_STATUS(status); } @@ -135,6 +109,17 @@ acpi_status acpi_enable_gpe(acpi_handle gpe_device, u32 gpe_number) if (ACPI_GPE_DISPATCH_TYPE(gpe_event_info->flags) != ACPI_GPE_DISPATCH_NONE) { status = acpi_ev_add_gpe_reference(gpe_event_info); + if (ACPI_SUCCESS(status) && + ACPI_GPE_IS_POLLING_NEEDED(gpe_event_info)) { + + /* Poll edge-triggered GPEs to handle existing events */ + + acpi_os_release_lock(acpi_gbl_gpe_lock, flags); + (void)acpi_ev_detect_gpe(gpe_device, + gpe_event_info, + gpe_number); + flags = acpi_os_acquire_lock(acpi_gbl_gpe_lock); + } } else { status = AE_NO_HANDLER; } |