From: Cesar Eduardo Barros <cesarb@cesarb.net>
To: Felipe Balbi <balbi@ti.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org,
Cesar Eduardo Barros <cesarb@cesarb.net>
Subject: [PATCH] mv-otg: use to_delayed_work instead of cast
Date: Tue, 4 Dec 2012 20:21:12 -0200 [thread overview]
Message-ID: <1354659672-3409-1-git-send-email-cesarb@cesarb.net> (raw)
Directly casting a work_struct pointer to a delayed_work is risky if the
work member of struct delayed_work is ever moved from being the first
member.
Instead, use the inline function to_delayed_work(), which does the same
cast in a safer way (using container_of).
Signed-off-by: Cesar Eduardo Barros <cesarb@cesarb.net>
---
drivers/usb/otg/mv_otg.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/usb/otg/mv_otg.c b/drivers/usb/otg/mv_otg.c
index 3f124e8..156e1d9 100644
--- a/drivers/usb/otg/mv_otg.c
+++ b/drivers/usb/otg/mv_otg.c
@@ -420,7 +420,7 @@ static void mv_otg_work(struct work_struct *work)
struct usb_otg *otg;
int old_state;
- mvotg = container_of((struct delayed_work *)work, struct mv_otg, work);
+ mvotg = container_of(to_delayed_work(work), struct mv_otg, work);
run:
/* work queue is single thread, or we need spin_lock to protect */
--
1.7.11.7
reply other threads:[~2012-12-04 22:21 UTC|newest]
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