linux-kernel - [ 006/120] media: rc: ite-cir: Initialise ite

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Message-Id: <20121011005826.516815785@linuxfoundation.org>
Date:	Thu, 11 Oct 2012 09:59:18 +0900
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	alan@...rguk.ukuu.org.uk, Ben Hutchings <ben@...adent.org.uk>,
	Mauro Carvalho Chehab <mchehab@...hat.com>
Subject: [ 006/120] media: rc: ite-cir: Initialise ite_dev::rdev earlier

3.4-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Ben Hutchings <ben@...adent.org.uk>

commit 4b961180ef275035b1538317ffd0e21e80e63e77 upstream.

ite_dev::rdev is currently initialised in ite_probe() after
rc_register_device() returns.  If a newly registered device is opened
quickly enough, we may enable interrupts and try to use ite_dev::rdev
before it has been initialised.  Move it up to the earliest point we
can, right after calling rc_allocate_device().

Reported-and-tested-by: YunQiang Su <wzssyqa@...il.com>

Signed-off-by: Ben Hutchings <ben@...adent.org.uk>
Signed-off-by: Mauro Carvalho Chehab <mchehab@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/media/rc/ite-cir.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/media/rc/ite-cir.c
+++ b/drivers/media/rc/ite-cir.c
@@ -1473,6 +1473,7 @@ static int ite_probe(struct pnp_dev *pde
 	rdev = rc_allocate_device();
 	if (!rdev)
 		goto failure;
+	itdev->rdev = rdev;
 
 	ret = -ENODEV;
 
@@ -1604,7 +1605,6 @@ static int ite_probe(struct pnp_dev *pde
 	if (ret)
 		goto failure;
 
-	itdev->rdev = rdev;
 	ite_pr(KERN_NOTICE, "driver has been successfully loaded\n");
 
 	return 0;


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