Blame patches.suse/ACPI-bus-Ensure-that-notify-handlers-are-not-running.patch
|
Takashi Iwai |
552b5d |
From faae443738c6f0dac9b0d3d11d108f6911a989a9 Mon Sep 17 00:00:00 2001
|
|
Takashi Iwai |
552b5d |
From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
|
|
Takashi Iwai |
552b5d |
Date: Fri, 14 Apr 2023 16:00:48 +0200
|
|
Takashi Iwai |
552b5d |
Subject: [PATCH] ACPI: bus: Ensure that notify handlers are not running after removal
|
|
Takashi Iwai |
552b5d |
Git-commit: faae443738c6f0dac9b0d3d11d108f6911a989a9
|
|
Takashi Iwai |
552b5d |
Patch-mainline: v6.4-rc1
|
|
Takashi Iwai |
552b5d |
References: git-fixes
|
|
Takashi Iwai |
552b5d |
|
|
Takashi Iwai |
552b5d |
Currently, acpi_device_remove_notify_handler() may return while the
|
|
Takashi Iwai |
552b5d |
notify handler being removed is still running which may allow the
|
|
Takashi Iwai |
552b5d |
module holding that handler to be torn down prematurely.
|
|
Takashi Iwai |
552b5d |
|
|
Takashi Iwai |
552b5d |
Address this issue by making acpi_device_remove_notify_handler() wait
|
|
Takashi Iwai |
552b5d |
for the handling of all the ACPI events in progress to complete before
|
|
Takashi Iwai |
552b5d |
returning.
|
|
Takashi Iwai |
552b5d |
|
|
Takashi Iwai |
552b5d |
Fixes: 5894b0c46e49 ("ACPI / scan: Move bus operations and notification routines to bus.c")
|
|
Takashi Iwai |
552b5d |
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
|
|
Takashi Iwai |
552b5d |
Acked-by: Takashi Iwai <tiwai@suse.de>
|
|
Takashi Iwai |
552b5d |
|
|
Takashi Iwai |
552b5d |
---
|
|
Takashi Iwai |
552b5d |
drivers/acpi/bus.c | 1 +
|
|
Takashi Iwai |
552b5d |
1 file changed, 1 insertion(+)
|
|
Takashi Iwai |
552b5d |
|
|
Takashi Iwai |
552b5d |
--- a/drivers/acpi/bus.c
|
|
Takashi Iwai |
552b5d |
+++ b/drivers/acpi/bus.c
|
|
Takashi Iwai |
552b5d |
@@ -572,6 +572,7 @@ static void acpi_device_remove_notify_ha
|
|
Takashi Iwai |
552b5d |
else
|
|
Takashi Iwai |
552b5d |
acpi_remove_notify_handler(device->handle, ACPI_DEVICE_NOTIFY,
|
|
Takashi Iwai |
552b5d |
acpi_notify_device);
|
|
Takashi Iwai |
552b5d |
+ acpi_os_wait_events_complete();
|
|
Takashi Iwai |
552b5d |
}
|
|
Takashi Iwai |
552b5d |
|
|
Takashi Iwai |
552b5d |
/* Handle events targeting \_SB device (at present only graceful shutdown) */
|