From 00e70bad1abba1f96f7b9e6454b222f393e5281f Mon Sep 17 00:00:00 2001 From: Thomas Gleixner <tglx@linutronix.de> Date: Fri, 25 Mar 2011 16:04:41 +0100 Subject: [PATCH] powerpc: cell: Fix the irq_desc access The core irq_set_type() function updates the flow type when the chip callback returns 0. It also updates irq_data, so this can be used in irq_ack() to check for the level bit. That avoids a redundant sparse irq lookup. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> --- arch/powerpc/platforms/cell/spider-pic.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/arch/powerpc/platforms/cell/spider-pic.c b/arch/powerpc/platforms/cell/spider-pic.c index b38cdfc1deb8..bc27de4cf84f 100644 --- a/arch/powerpc/platforms/cell/spider-pic.c +++ b/arch/powerpc/platforms/cell/spider-pic.c @@ -102,7 +102,7 @@ static void spider_ack_irq(struct irq_data *d) /* Reset edge detection logic if necessary */ - if (irq_to_desc(d->irq)->status & IRQ_LEVEL) + if (irqd_is_level_type(d)) return; /* Only interrupts 47 to 50 can be set to edge */ @@ -119,7 +119,6 @@ static int spider_set_irq_type(struct irq_data *d, unsigned int type) struct spider_pic *pic = spider_virq_to_pic(d->irq); unsigned int hw = irq_map[d->irq].hwirq; void __iomem *cfg = spider_get_irq_config(pic, hw); - struct irq_desc *desc = irq_to_desc(d->irq); u32 old_mask; u32 ic; @@ -147,12 +146,6 @@ static int spider_set_irq_type(struct irq_data *d, unsigned int type) return -EINVAL; } - /* Update irq_desc */ - desc->status &= ~(IRQ_TYPE_SENSE_MASK | IRQ_LEVEL); - desc->status |= type & IRQ_TYPE_SENSE_MASK; - if (type & (IRQ_TYPE_LEVEL_HIGH | IRQ_TYPE_LEVEL_LOW)) - desc->status |= IRQ_LEVEL; - /* Configure the source. One gross hack that was there before and * that I've kept around is the priority to the BE which I set to * be the same as the interrupt source number. I don't know wether