linux-kernel - [ 01/95] ARM: OMAP: make iommu subsys

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Message-Id: <20120309190202.425318888@linuxfoundation.org>
Date:	Fri, 09 Mar 2012 11:02:03 -0800
From:	Greg KH <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:	torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
	alan@...rguk.ukuu.org.uk, James <angweiyang@...il.com>,
	Ohad Ben-Cohen <ohad@...ery.com>,
	Tony Lindgren <tony@...mide.com>,
	Hiroshi Doyu <hdoyu@...dia.com>,
	Joerg Roedel <Joerg.Roedel@....com>,
	Joerg Roedel <joerg.roedel@....com>
Subject: [ 01/95] ARM: OMAP: make iommu subsys_initcall to fix builtin omap3isp

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

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

From: Ohad Ben-Cohen <ohad@...ery.com>

commit 435792d93410f008120c4dbab148019a3cc31dbc upstream.

omap3isp depends on omap's iommu and will fail to probe if
initialized before it (which always happen if they are builtin).

Make omap's iommu subsys_initcall as an interim solution until
the probe deferral mechanism is merged.

Reported-by: James <angweiyang@...il.com>
Debugged-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Signed-off-by: Ohad Ben-Cohen <ohad@...ery.com>
Cc: Tony Lindgren <tony@...mide.com>
Cc: Hiroshi Doyu <hdoyu@...dia.com>
Cc: Joerg Roedel <Joerg.Roedel@....com>
Signed-off-by: Joerg Roedel <joerg.roedel@....com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 arch/arm/mach-omap2/mailbox.c |    3 ++-
 drivers/iommu/omap-iommu.c    |    3 ++-
 2 files changed, 4 insertions(+), 2 deletions(-)

--- a/arch/arm/mach-omap2/mailbox.c
+++ b/arch/arm/mach-omap2/mailbox.c
@@ -412,7 +412,8 @@ static void __exit omap2_mbox_exit(void)
 	platform_driver_unregister(&omap2_mbox_driver);
 }
 
-module_init(omap2_mbox_init);
+/* must be ready before omap3isp is probed */
+subsys_initcall(omap2_mbox_init);
 module_exit(omap2_mbox_exit);
 
 MODULE_LICENSE("GPL v2");
--- a/drivers/iommu/omap-iommu.c
+++ b/drivers/iommu/omap-iommu.c
@@ -1229,7 +1229,8 @@ static int __init omap_iommu_init(void)
 
 	return platform_driver_register(&omap_iommu_driver);
 }
-module_init(omap_iommu_init);
+/* must be ready before omap3isp is probed */
+subsys_initcall(omap_iommu_init);
 
 static void __exit omap_iommu_exit(void)
 {


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