linux-kernel - [PATCH] of/irq: of_irq_init: add check for parent equal to child node

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Date:	Sun, 27 Nov 2011 20:49:10 -0600
From:	Rob Herring <robherring2@...il.com>
To:	linux-kernel@...r.kernel.org, devicetree-discuss@...ts.ozlabs.org
Cc:	Grant Likely <grant.likely@...retlab.ca>, benh@...nel.crashing.org,
	Rob Herring <rob.herring@...xeda.com>
Subject: [PATCH] of/irq: of_irq_init: add check for parent equal to child node

From: Rob Herring <rob.herring@...xeda.com>

With the revert of "of/irq: of_irq_find_parent: check for parent equal to
child" (dc9372808412edb), we need another way to handle parent node equal
to the child node. This can simply be handled in of_irq_init by checking
for this condition.

Signed-off-by: Rob Herring <rob.herring@...xeda.com>
---
 drivers/of/irq.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 791270b..19c0115 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -424,6 +424,8 @@ void __init of_irq_init(const struct of_device_id *matches)
 
 		desc->dev = np;
 		desc->interrupt_parent = of_irq_find_parent(np);
+		if (desc->interrupt_parent == np)
+			desc->interrupt_parent = NULL;
 		list_add_tail(&desc->list, &intc_desc_list);
 	}
 
-- 
1.7.5.4

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