flush kacpi_notify_wq before removing notify handler

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From: Linux Kernel Mailing List
Date: Wednesday, April 30, 2008 - 12:33 pm

Gitweb:     http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2f67a0...
Commit:     2f67a0695dc389247c05041b05d2a2b06fc102a3
Parent:     a01e035ebb552223c03f2d9138ffc73f2d4d3965
Author:     Zhang Rui <rui.zhang@intel.com>
AuthorDate: Tue Apr 29 02:34:42 2008 -0400
Committer:  Len Brown <len.brown@intel.com>
CommitDate: Tue Apr 29 02:34:42 2008 -0400

    flush kacpi_notify_wq before removing notify handler
    
    Flush kacpi_notify_wq before notify handler is removed,
    this can fix a bug which the deferred notify handler is executed
    after the notify_handler has already been removed.
    http://bugzilla.kernel.org/show_bug.cgi?id=9772
    
    Signed-off-by: Zhang Rui <rui.zhang@intel.com>
    Signed-off-by: Len Brown <len.brown@intel.com>
---
 drivers/acpi/osl.c |    1 +
 1 files changed, 1 insertions(+), 0 deletions(-)

diff --git a/drivers/acpi/osl.c b/drivers/acpi/osl.c
index a498a6c..235a138 100644
--- a/drivers/acpi/osl.c
+++ b/drivers/acpi/osl.c
@@ -742,6 +742,7 @@ EXPORT_SYMBOL(acpi_os_execute);
 void acpi_os_wait_events_complete(void *context)
 {
 	flush_workqueue(kacpid_wq);
+	flush_workqueue(kacpi_notify_wq);
 }
 
 EXPORT_SYMBOL(acpi_os_wait_events_complete);
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flush kacpi_notify_wq before removing notify handler, Linux Kernel Mailing ..., (Wed Apr 30, 12:33 pm)