xtensa: Convert s6000 gpio irq_chip to new functions

Also use proper wrappers for irq_desc access.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: Chris Zankel <chris@zankel.net>
LKML-Reference: <20110206211137.750284615@linutronix.de>

arch/xtensa/variants/s6000/gpio.c

@@ -85,30 +85,29 @@ int s6_gpio_init(u32 afsel)
 	return gpiochip_add(&gpiochip);
 }
 
-static void ack(unsigned int irq)
+static void ack(struct irq_data *d)
 {
-	writeb(1 << (irq - IRQ_BASE), S6_REG_GPIO + S6_GPIO_IC);
+	writeb(1 << (d->irq - IRQ_BASE), S6_REG_GPIO + S6_GPIO_IC);
 }
 
-static void mask(unsigned int irq)
+static void mask(struct irq_data *d)
 {
 	u8 r = readb(S6_REG_GPIO + S6_GPIO_IE);
-	r &= ~(1 << (irq - IRQ_BASE));
+	r &= ~(1 << (d->irq - IRQ_BASE));
 	writeb(r, S6_REG_GPIO + S6_GPIO_IE);
 }
 
-static void unmask(unsigned int irq)
+static void unmask(struct irq_data *d)
 {
 	u8 m = readb(S6_REG_GPIO + S6_GPIO_IE);
-	m |= 1 << (irq - IRQ_BASE);
+	m |= 1 << (d->irq - IRQ_BASE);
 	writeb(m, S6_REG_GPIO + S6_GPIO_IE);
 }
 
-static int set_type(unsigned int irq, unsigned int type)
+static int set_type(struct irq_data *d, unsigned int type)
 {
-	const u8 m = 1 << (irq - IRQ_BASE);
+	const u8 m = 1 << (d->irq - IRQ_BASE);
 	irq_flow_handler_t handler;
-	struct irq_desc *desc;
 	u8 reg;
 
 	if (type == IRQ_TYPE_PROBE) {
@@ -129,8 +128,7 @@ static int set_type(unsigned int irq, unsigned int type)
 		handler = handle_edge_irq;
 	}
 	writeb(reg, S6_REG_GPIO + S6_GPIO_BANK(0) + S6_GPIO_IS);
-	desc = irq_to_desc(irq);
-	desc->handle_irq = handler;
+	__set_irq_handler_unlocked(irq, handler);
 
 	reg = readb(S6_REG_GPIO + S6_GPIO_BANK(0) + S6_GPIO_IEV);
 	if (type & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_EDGE_RISING))
@@ -150,22 +148,23 @@ static int set_type(unsigned int irq, unsigned int type)
 
 static struct irq_chip gpioirqs = {
 	.name = "GPIO",
-	.ack = ack,
-	.mask = mask,
-	.unmask = unmask,
-	.set_type = set_type,
+	.irq_ack = ack,
+	.irq_mask = mask,
+	.irq_unmask = unmask,
+	.irq_set_type = set_type,
 };
 
 static u8 demux_masks[4];
 
 static void demux_irqs(unsigned int irq, struct irq_desc *desc)
 {
+	struct irq_chip *chip = get_irq_desc_chip(desc);
 	u8 *mask = get_irq_desc_data(desc);
 	u8 pending;
 	int cirq;
 
-	desc->chip->mask(irq);
-	desc->chip->ack(irq);
+	chip->irq_mask(&desc->irq_data);
+	chip->irq_ack(&desc->irq_data));
 	pending = readb(S6_REG_GPIO + S6_GPIO_BANK(0) + S6_GPIO_MIS) & *mask;
 	cirq = IRQ_BASE - 1;
 	while (pending) {
@@ -174,7 +173,7 @@ static void demux_irqs(unsigned int irq, struct irq_desc *desc)
 		pending >>= n;
 		generic_handle_irq(cirq);
 	}
-	desc->chip->unmask(irq);
+	chip->irq_unmask(&desc->irq_data));
 }
 
 extern const signed char *platform_irq_mappings[XTENSA_NR_IRQS];