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Date: Sat, 14 Dec 2013 03:09:31 +0300 From: Sergei Shtylyov <sergei.shtylyov@...entembedded.com> To: tglx@...utronix.de, linux-sh@...r.kernel.org Cc: linux-kernel@...r.kernel.org, magnus.damm@...il.com Subject: [PATCH] irq-renesas-irqc: simplify irq_set_type() method Value 0 of the sense selection field of CONFIG_n register means "disable event detection" and serves in irqc_sense[] for marking the invalid values of the IRQ type (by just omitting initializers). There is no need for INTC_IRQ_SENSE_VALID and hence INTC_IRQ_SENSE() as all field values matching to the valid IRQ types are non-zero anyway. Signed-off-by: Sergei Shtylyov <sergei.shtylyov@...entembedded.com> --- The patch is against the 'irq/core' branch of the 'tip.git' repo. drivers/irqchip/irq-renesas-irqc.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) Index: renesas/drivers/irqchip/irq-renesas-irqc.c =================================================================== --- renesas.orig/drivers/irqchip/irq-renesas-irqc.c +++ renesas/drivers/irqchip/irq-renesas-irqc.c @@ -81,15 +81,12 @@ static void irqc_irq_disable(struct irq_ iowrite32(BIT(hw_irq), p->cpu_int_base + IRQC_EN_STS); } -#define INTC_IRQ_SENSE_VALID 0x10 -#define INTC_IRQ_SENSE(x) (x + INTC_IRQ_SENSE_VALID) - static unsigned char irqc_sense[IRQ_TYPE_SENSE_MASK + 1] = { - [IRQ_TYPE_LEVEL_LOW] = INTC_IRQ_SENSE(0x01), - [IRQ_TYPE_LEVEL_HIGH] = INTC_IRQ_SENSE(0x02), - [IRQ_TYPE_EDGE_FALLING] = INTC_IRQ_SENSE(0x04), /* Synchronous */ - [IRQ_TYPE_EDGE_RISING] = INTC_IRQ_SENSE(0x08), /* Synchronous */ - [IRQ_TYPE_EDGE_BOTH] = INTC_IRQ_SENSE(0x0c), /* Synchronous */ + [IRQ_TYPE_LEVEL_LOW] = 0x01, + [IRQ_TYPE_LEVEL_HIGH] = 0x02, + [IRQ_TYPE_EDGE_FALLING] = 0x04, /* Synchronous */ + [IRQ_TYPE_EDGE_RISING] = 0x08, /* Synchronous */ + [IRQ_TYPE_EDGE_BOTH] = 0x0c, /* Synchronous */ }; static int irqc_irq_set_type(struct irq_data *d, unsigned int type) @@ -101,12 +98,12 @@ static int irqc_irq_set_type(struct irq_ irqc_dbg(&p->irq[hw_irq], "sense"); - if (!(value & INTC_IRQ_SENSE_VALID)) + if (!value) return -EINVAL; tmp = ioread32(p->iomem + IRQC_CONFIG(hw_irq)); tmp &= ~0x3f; - tmp |= value ^ INTC_IRQ_SENSE_VALID; + tmp |= value; iowrite32(tmp, p->iomem + IRQC_CONFIG(hw_irq)); return 0; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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