linux-kernel - [PATCH 3/7] staging: panel: replace del_timer by del_timer

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Message-Id: <1395869625-15209-4-git-send-email-Julia.Lawall@lip6.fr>
Date:	Wed, 26 Mar 2014 22:33:41 +0100
From:	Julia Lawall <Julia.Lawall@...6.fr>
To:	Willy Tarreau <willy@...a-x.org>
Cc:	kernel-janitors@...r.kernel.org, tglx@...utronix.de,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devel@...verdev.osuosl.org, linux-kernel@...r.kernel.org
Subject: [PATCH 3/7] staging: panel: replace del_timer by del_timer_sync

From: Julia Lawall <Julia.Lawall@...6.fr>

Use del_timer_sync to ensure that the timer is stopped on all CPUs before
the driver exists.

This change was suggested by Thomas Gleixner.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
declarer name module_exit;
identifier ex;
@@

module_exit(ex);

@@
identifier r.ex;
@@

ex(...) {
  <...
- del_timer
+ del_timer_sync
    (...)
  ...>
}
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@...6.fr>

---
Not tested.

 drivers/staging/panel/panel.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/panel/panel.c b/drivers/staging/panel/panel.c
index 08f9a48..a53f94e 100644
--- a/drivers/staging/panel/panel.c
+++ b/drivers/staging/panel/panel.c
@@ -2298,7 +2298,7 @@ static void __exit panel_cleanup_module(void)
 	unregister_reboot_notifier(&panel_notifier);
 
 	if (scan_timer.function != NULL)
-		del_timer(&scan_timer);
+		del_timer_sync(&scan_timer);
 
 	if (pprt != NULL) {
 		if (keypad_enabled) {

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