linux-kernel - [ 18/37] rpmsg: fix dependency on initialization order

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Date:	Tue, 17 Jul 2012 17:02:55 -0700
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	Greg KH <gregkh@...uxfoundation.org>,
	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, Federico Fuga <fuga@...diofuga.com>,
	Ohad Ben-Cohen <ohad@...ery.com>
Subject: [ 18/37] rpmsg: fix dependency on initialization order

From: Greg KH <gregkh@...uxfoundation.org>

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

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

From: Federico Fuga <fuga@...diofuga.com>

commit 9634252617441991b01dacaf4040866feecaf36f upstream.

When rpmsg drivers are built into the kernel, they must not initialize
before the rpmsg bus does, otherwise they'd trigger a BUG() in
drivers/base/driver.c line 169 (driver_register()).

To fix that, and to stop depending on arbitrary linkage ordering of
those built-in rpmsg drivers, we make the rpmsg bus initialize at
subsys_initcall.

Signed-off-by: Federico Fuga <fuga@...diofuga.com>
[ohad: rewrite the commit log]
Signed-off-by: Ohad Ben-Cohen <ohad@...ery.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

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

--- a/drivers/rpmsg/virtio_rpmsg_bus.c
+++ b/drivers/rpmsg/virtio_rpmsg_bus.c
@@ -1085,7 +1085,7 @@ static int __init rpmsg_init(void)
 
 	return ret;
 }
-module_init(rpmsg_init);
+subsys_initcall(rpmsg_init);
 
 static void __exit rpmsg_fini(void)
 {


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