From: Thomas Gleixner <tglx@linutronix.de>
Date: Sun, 21 Jun 2015 19:10:53 +0000 (+0200)
Subject: irqchip/gic: Consolidate chained IRQ handler install/remove
X-Git-Tag: firefly_0821_release~176^2~1122^2~117
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=4d83fcf8d615e44ca3ce1ac5766ae121ce08161b;p=firefly-linux-kernel-4.4.55.git

irqchip/gic: Consolidate chained IRQ handler install/remove

Chained irq handlers usually set up handler data as well. We now have
a function to set both under irq_desc->lock. Replace the two calls
with one.

Search and conversion was done with coccinelle:

@@
expression E1, E2, E3;
@@
(
-if (irq_set_handler_data(E1, E2) != 0)
-   BUG();
|
-irq_set_handler_data(E1, E2);
)
-irq_set_chained_handler(E1, E3);
+irq_set_chained_handler_and_data(E1, E3, E2);

@@
expression E1, E2, E3;
@@
(
-if (irq_set_handler_data(E1, E2) != 0)
-   BUG();
...
|
-irq_set_handler_data(E1, E2);
...
)
-irq_set_chained_handler(E1, E3);
+irq_set_chained_handler_and_data(E1, E3, E2);

Reported-by: Russell King <rmk+kernel@arm.linux.org.uk>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Julia Lawall <Julia.Lawall@lip6.fr>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Jason Cooper <jason@lakedaemon.net>
---

diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index 9be84bd3cd55..2eaae9c2a5d4 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -331,9 +331,8 @@ void __init gic_cascade_irq(unsigned int gic_nr, unsigned int irq)
 {
 	if (gic_nr >= MAX_GIC_NR)
 		BUG();
-	if (irq_set_handler_data(irq, &gic_data[gic_nr]) != 0)
-		BUG();
-	irq_set_chained_handler(irq, gic_handle_cascade_irq);
+	irq_set_chained_handler_and_data(irq, gic_handle_cascade_irq,
+					 &gic_data[gic_nr]);
 }
 
 static u8 gic_get_cpumask(struct gic_chip_data *gic)