Patch "Revert "ACPICA: Events: Support fixed PCIe wake event"" has been added to the 6.2-stable tree

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This is a note to let you know that I've just added the patch titled

    Revert "ACPICA: Events: Support fixed PCIe wake event"

to the 6.2-stable tree which can be found at:
    http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary

The filename of the patch is:
     revert-acpica-events-support-fixed-pcie-wake-event.patch
and it can be found in the queue-6.2 subdirectory.

If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.


>From 8e41e0a575664d26bb87e012c39435c4c3914ed9 Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Date: Fri, 21 Apr 2023 13:39:10 -0700
Subject: Revert "ACPICA: Events: Support fixed PCIe wake event"

From: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>

commit 8e41e0a575664d26bb87e012c39435c4c3914ed9 upstream.

This reverts commit 5c62d5aab8752e5ee7bfbe75ed6060db1c787f98.

This broke wake-on-lan for multiple people, and for much too long.

Link: https://bugzilla.kernel.org/show_bug.cgi?id=217069
Link: https://lore.kernel.org/all/754225a2-95a9-2c36-1886-7da1a78308c2@xxxxxxxxxxx/
Link: https://github.com/acpica/acpica/pull/866
Cc: Rafael J. Wysocki <rafael@xxxxxxxxxx>
Cc: Jianmin Lv <lvjianmin@xxxxxxxxxxx>
Cc: Huacai Chen <chenhuacai@xxxxxxxxxxx>
Cc: Bob Moore <robert.moore@xxxxxxxxx>
Cc: stable@xxxxxxxxxx # 6.2
Signed-off-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/acpi/acpica/evevent.c  |   11 -----------
 drivers/acpi/acpica/hwsleep.c  |   14 --------------
 drivers/acpi/acpica/utglobal.c |    4 ----
 include/acpi/actypes.h         |    3 +--
 4 files changed, 1 insertion(+), 31 deletions(-)

--- a/drivers/acpi/acpica/evevent.c
+++ b/drivers/acpi/acpica/evevent.c
@@ -142,9 +142,6 @@ static acpi_status acpi_ev_fixed_event_i
 			status =
 			    acpi_write_bit_register(acpi_gbl_fixed_event_info
 						    [i].enable_register_id,
-						    (i ==
-						     ACPI_EVENT_PCIE_WAKE) ?
-						    ACPI_ENABLE_EVENT :
 						    ACPI_DISABLE_EVENT);
 			if (ACPI_FAILURE(status)) {
 				return (status);
@@ -188,11 +185,6 @@ u32 acpi_ev_fixed_event_detect(void)
 		return (int_status);
 	}
 
-	if (fixed_enable & ACPI_BITMASK_PCIEXP_WAKE_DISABLE)
-		fixed_enable &= ~ACPI_BITMASK_PCIEXP_WAKE_DISABLE;
-	else
-		fixed_enable |= ACPI_BITMASK_PCIEXP_WAKE_DISABLE;
-
 	ACPI_DEBUG_PRINT((ACPI_DB_INTERRUPTS,
 			  "Fixed Event Block: Enable %08X Status %08X\n",
 			  fixed_enable, fixed_status));
@@ -258,9 +250,6 @@ static u32 acpi_ev_fixed_event_dispatch(
 	if (!acpi_gbl_fixed_event_handlers[event].handler) {
 		(void)acpi_write_bit_register(acpi_gbl_fixed_event_info[event].
 					      enable_register_id,
-					      (event ==
-					       ACPI_EVENT_PCIE_WAKE) ?
-					      ACPI_ENABLE_EVENT :
 					      ACPI_DISABLE_EVENT);
 
 		ACPI_ERROR((AE_INFO,
--- a/drivers/acpi/acpica/hwsleep.c
+++ b/drivers/acpi/acpica/hwsleep.c
@@ -311,20 +311,6 @@ acpi_status acpi_hw_legacy_wake(u8 sleep
 				    [ACPI_EVENT_SLEEP_BUTTON].
 				    status_register_id, ACPI_CLEAR_STATUS);
 
-	/* Enable pcie wake event if support */
-	if ((acpi_gbl_FADT.flags & ACPI_FADT_PCI_EXPRESS_WAKE)) {
-		(void)
-		    acpi_write_bit_register(acpi_gbl_fixed_event_info
-					    [ACPI_EVENT_PCIE_WAKE].
-					    enable_register_id,
-					    ACPI_DISABLE_EVENT);
-		(void)
-		    acpi_write_bit_register(acpi_gbl_fixed_event_info
-					    [ACPI_EVENT_PCIE_WAKE].
-					    status_register_id,
-					    ACPI_CLEAR_STATUS);
-	}
-
 	acpi_hw_execute_sleep_method(METHOD_PATHNAME__SST, ACPI_SST_WORKING);
 	return_ACPI_STATUS(status);
 }
--- a/drivers/acpi/acpica/utglobal.c
+++ b/drivers/acpi/acpica/utglobal.c
@@ -186,10 +186,6 @@ struct acpi_fixed_event_info acpi_gbl_fi
 					ACPI_BITREG_RT_CLOCK_ENABLE,
 					ACPI_BITMASK_RT_CLOCK_STATUS,
 					ACPI_BITMASK_RT_CLOCK_ENABLE},
-	/* ACPI_EVENT_PCIE_WAKE     */ {ACPI_BITREG_PCIEXP_WAKE_STATUS,
-					ACPI_BITREG_PCIEXP_WAKE_DISABLE,
-					ACPI_BITMASK_PCIEXP_WAKE_STATUS,
-					ACPI_BITMASK_PCIEXP_WAKE_DISABLE},
 };
 #endif				/* !ACPI_REDUCED_HARDWARE */
 
--- a/include/acpi/actypes.h
+++ b/include/acpi/actypes.h
@@ -723,8 +723,7 @@ typedef u32 acpi_event_type;
 #define ACPI_EVENT_POWER_BUTTON         2
 #define ACPI_EVENT_SLEEP_BUTTON         3
 #define ACPI_EVENT_RTC                  4
-#define ACPI_EVENT_PCIE_WAKE            5
-#define ACPI_EVENT_MAX                  5
+#define ACPI_EVENT_MAX                  4
 #define ACPI_NUM_FIXED_EVENTS           ACPI_EVENT_MAX + 1
 
 /*


Patches currently in stable-queue which might be from torvalds@xxxxxxxxxxxxxxxxxxxx are

queue-6.2/revert-acpica-events-support-fixed-pcie-wake-event.patch



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