linux-kernel - [PATCH 4.2.y-ckt 047/305] ARM: imx: add platform irq type setting in gpc

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Date:	Fri, 15 Jan 2016 15:57:41 -0800
From:	Kamal Mostafa <kamal@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	Anson Huang <Anson.Huang@...escale.com>,
	Shawn Guo <shawnguo@...nel.org>,
	Kamal Mostafa <kamal@...onical.com>
Subject: [PATCH 4.2.y-ckt 047/305] ARM: imx: add platform irq type setting in gpc

4.2.8-ckt2 -stable review patch.  If anyone has any objections, please let me know.

---8<------------------------------------------------------------

From: Anson Huang <b20788@...escale.com>

commit 4699ccbf8cf2f962031b88de7851f610030e5c17 upstream.

GPC irq domain is a child domain of GIC, now all of platform irqs
are inside GPC domain, during the module populate, all devices irq
should have correct type setting in GIC, however, there is no
.irq_set_type callback setting in GPC, so the irq_set_type will be
skipped and cause all irqs' type in /proc/interrupt are "edge" which
mismatch with irq type setting in dtb file. Since GPC has no irq
type setting, so just tell kernel to use irq_chip_set_type_parent.

Signed-off-by: Anson Huang <Anson.Huang@...escale.com>
Reviewed-by: Lucas Stach <l.stach@...gutronix.de>
Reviewed-by: Marc Zyngier <marc.zyngier@....com>
Signed-off-by: Shawn Guo <shawnguo@...nel.org>
Signed-off-by: Kamal Mostafa <kamal@...onical.com>
---
 arch/arm/mach-imx/gpc.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/mach-imx/gpc.c b/arch/arm/mach-imx/gpc.c
index 8c4467f..af085d7 100644
--- a/arch/arm/mach-imx/gpc.c
+++ b/arch/arm/mach-imx/gpc.c
@@ -176,6 +176,7 @@ static struct irq_chip imx_gpc_chip = {
 	.irq_unmask		= imx_gpc_irq_unmask,
 	.irq_retrigger		= irq_chip_retrigger_hierarchy,
 	.irq_set_wake		= imx_gpc_irq_set_wake,
+	.irq_set_type           = irq_chip_set_type_parent,
 #ifdef CONFIG_SMP
 	.irq_set_affinity	= irq_chip_set_affinity_parent,
 #endif
-- 
1.9.1