linux-kernel - [PATCH 13/16] irqchip/gic: Kill the xlate method

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Date:	Tue,  6 Oct 2015 18:36:26 +0100
From:	Marc Zyngier <marc.zyngier@....com>
To:	Thomas Gleixner <tglx@...utronix.de>,
	Jiang Liu <jiang.liu@...ux.intel.com>,
	Jason Cooper <jason@...edaemon.net>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>
Cc:	<linux-acpi@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>,
	Lorenzo Pieralisi <lorenzo.pieralisi@....com>,
	Tomasz Nowicki <tomasz.nowicki@...aro.org>,
	Hanjun Guo <hanjun.guo@...aro.org>,
	Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>,
	Graeme Gregory <graeme@...a.org.uk>,
	Jake Oshins <jakeo@...rosoft.com>
Subject: [PATCH 13/16] irqchip/gic: Kill the xlate method

We are now left with only two use models for the GIC driver:
- Via a firmware interface, which mandates a hierarchical domain,
  and the use of the 'translate' method
- The legacy platforms, which assume irq==hwirq, hence not using
  the 'xlate' method.

The logical conclusion is that we can now nuke the 'xlate' method
altogether.

Signed-off-by: Marc Zyngier <marc.zyngier@....com>
---
 drivers/irqchip/irq-gic.c | 25 -------------------------
 1 file changed, 25 deletions(-)

diff --git a/drivers/irqchip/irq-gic.c b/drivers/irqchip/irq-gic.c
index ad5ecfd..a4bd77f 100644
--- a/drivers/irqchip/irq-gic.c
+++ b/drivers/irqchip/irq-gic.c
@@ -903,30 +903,6 @@ static void gic_irq_domain_unmap(struct irq_domain *d, unsigned int irq)
 {
 }
 
-static int gic_irq_domain_xlate(struct irq_domain *d,
-				struct device_node *controller,
-				const u32 *intspec, unsigned int intsize,
-				unsigned long *out_hwirq, unsigned int *out_type)
-{
-	unsigned long ret = 0;
-
-	if (irq_domain_get_of_node(d) != controller)
-		return -EINVAL;
-	if (intsize < 3)
-		return -EINVAL;
-
-	/* Get the interrupt number and add 16 to skip over SGIs */
-	*out_hwirq = intspec[1] + 16;
-
-	/* For SPIs, we need to add 16 more to get the GIC irq ID number */
-	if (!intspec[0])
-		*out_hwirq += 16;
-
-	*out_type = intspec[2] & IRQ_TYPE_SENSE_MASK;
-
-	return ret;
-}
-
 static int gic_irq_domain_translate(struct irq_domain *d,
 				    struct irq_fwspec *fwspec,
 				    unsigned long *hwirq,
@@ -1008,7 +984,6 @@ static const struct irq_domain_ops gic_irq_domain_hierarchy_ops = {
 static const struct irq_domain_ops gic_irq_domain_ops = {
 	.map = gic_irq_domain_map,
 	.unmap = gic_irq_domain_unmap,
-	.xlate = gic_irq_domain_xlate,
 };
 
 static void __init __gic_init_bases(unsigned int gic_nr, int irq_start,
-- 
2.1.4

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