linux-kernel - [PATCH v2 02/26] arm64: convert handle_IRQ to use __handle_domain

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Message-Id: <1409047421-27649-3-git-send-email-marc.zyngier@arm.com>
Date:	Tue, 26 Aug 2014 11:03:17 +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 02/26] arm64: 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/arm64/Kconfig      |  1 +
 arch/arm64/kernel/irq.c | 18 +-----------------
 2 files changed, 2 insertions(+), 17 deletions(-)

diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig
index fd4e81a..1f16ed9 100644
--- a/arch/arm64/Kconfig
+++ b/arch/arm64/Kconfig
@@ -30,6 +30,7 @@ config ARM64
 	select GENERIC_STRNCPY_FROM_USER
 	select GENERIC_STRNLEN_USER
 	select GENERIC_TIME_VSYSCALL
+	select HANDLE_DOMAIN_IRQ
 	select HARDIRQS_SW_RESEND
 	select HAVE_ARCH_AUDITSYSCALL
 	select HAVE_ARCH_JUMP_LABEL
diff --git a/arch/arm64/kernel/irq.c b/arch/arm64/kernel/irq.c
index 0f08dfd..2c0e2a7 100644
--- a/arch/arm64/kernel/irq.c
+++ b/arch/arm64/kernel/irq.c
@@ -48,23 +48,7 @@ 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)) {
-		pr_warn_ratelimited("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);
 }
 
 void __init set_handle_irq(void (*handle_irq)(struct pt_regs *))
-- 
2.0.4

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