linux-kernel - [PATCH v2 03/26] ARM: convert handle_IRQ to use __handle_domain

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Date:	Tue, 26 Aug 2014 11:03:18 +0100
From:	Marc Zyngier <marc.zyngier@....com>
To:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	linux-omap@...r.kernel.org, linux@...ts.openrisc.net
Cc:	linux@....linux.org.uk, shawn.guo@...escale.com,
	kernel@...gutronix.de, tony@...mide.com, catalin.marinas@....com,
	will.deacon@....com, jonas@...thpole.se, tglx@...utronix.de,
	jason@...edaemon.net, shc_work@...l.ru, baohua@...nel.org,
	maxime.ripard@...e-electrons.com, marc.zyngier@....com,
	khilman@...aro.org, sboyd@...eaurora.org,
	lorenzo.pieralisi@....com, larry.bassel@...aro.org,
	mark.rutland@....com, sudeep.holla@....com,
	stefan.kristiansson@...nalahti.fi, vkale@....com,
	schwidefsky@...ibm.com
Subject: [PATCH v2 03/26] ARM: convert handle_IRQ to use __handle_domain_irq

In order to limit code duplication, convert the architecture specific
handle_IRQ to use the generic __handle_domain_irq function.

Signed-off-by: Marc Zyngier <marc.zyngier@....com>
---
 arch/arm/Kconfig      |  1 +
 arch/arm/kernel/irq.c | 19 +------------------
 2 files changed, 2 insertions(+), 18 deletions(-)

diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig
index c49a775..5918d40 100644
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -24,6 +24,7 @@ config ARM
 	select GENERIC_SMP_IDLE_THREAD
 	select GENERIC_STRNCPY_FROM_USER
 	select GENERIC_STRNLEN_USER
+	select HANDLE_DOMAIN_IRQ
 	select HARDIRQS_SW_RESEND
 	select HAVE_ARCH_AUDITSYSCALL if (AEABI && !OABI_COMPAT)
 	select HAVE_ARCH_JUMP_LABEL if !XIP_KERNEL
diff --git a/arch/arm/kernel/irq.c b/arch/arm/kernel/irq.c
index 2c42576..0509d07 100644
--- a/arch/arm/kernel/irq.c
+++ b/arch/arm/kernel/irq.c
@@ -65,24 +65,7 @@ int arch_show_interrupts(struct seq_file *p, int prec)
  */
 void handle_IRQ(unsigned int irq, struct pt_regs *regs)
 {
-	struct pt_regs *old_regs = set_irq_regs(regs);
-
-	irq_enter();
-
-	/*
-	 * Some hardware gives randomly wrong interrupts.  Rather
-	 * than crashing, do something sensible.
-	 */
-	if (unlikely(irq >= nr_irqs)) {
-		if (printk_ratelimit())
-			printk(KERN_WARNING "Bad IRQ%u\n", irq);
-		ack_bad_irq(irq);
-	} else {
-		generic_handle_irq(irq);
-	}
-
-	irq_exit();
-	set_irq_regs(old_regs);
+	__handle_domain_irq(NULL, irq, false, regs);
 }
 
 /*
-- 
2.0.4

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