UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

genirq: Use handle_irq_event() in handle_edge_irq() 

It's safe to drop the IRQ_INPROGRESS flag between action chain walks
as we are protected by desc->lock.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Thomas Gleixner 2011-02-07 01:24:07 +01:00
parent a7ae4de5c8
commit a60a5dc2db
1 changed files with 2 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
kernel/irq/chip.c
View File

@ -583,14 +583,8 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
/* Start handling the irq */
desc->irq_data.chip->irq_ack(&desc->irq_data);
/* Mark the IRQ currently in progress.*/
desc->status |= IRQ_INPROGRESS;
do {
struct irqaction *action = desc->action;
irqreturn_t action_ret;
if (unlikely(!action)) {
if (unlikely(!desc->action)) {
mask_irq(desc);
goto out_unlock;
}
@ -606,16 +600,10 @@ handle_edge_irq(unsigned int irq, struct irq_desc *desc)
unmask_irq(desc);
}
desc->status &= ~IRQ_PENDING;
raw_spin_unlock(&desc->lock);
action_ret = handle_IRQ_event(irq, action);
if (!noirqdebug)
note_interrupt(irq, desc, action_ret);
raw_spin_lock(&desc->lock);
handle_irq_event(desc);
} while ((desc->status & (IRQ_PENDING | IRQ_DISABLED)) == IRQ_PENDING);
desc->status &= ~IRQ_INPROGRESS;
out_unlock:
raw_spin_unlock(&desc->lock);
}