/*
- * Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
+ * Copyright (C) 2002 - 2003 Jeff Dike (jdike@addtoit.com)
* Licensed under the GPL
*/
/* Protected by sigio_lock() called from write_sigio_workaround */
static int sigio_irq_fd = -1;
-irqreturn_t sigio_interrupt(int irq, void *data, struct pt_regs *unused)
+static irqreturn_t sigio_interrupt(int irq, void *data, struct pt_regs *unused)
{
read_sigio_fd(sigio_irq_fd);
reactivate_fd(sigio_irq_fd, SIGIO_WRITE_IRQ);
int write_sigio_irq(int fd)
{
- if(um_request_irq(SIGIO_WRITE_IRQ, fd, IRQ_READ, sigio_interrupt,
- SA_INTERRUPT | SA_SAMPLE_RANDOM, "write sigio",
- NULL)){
- printk("write_sigio_irq : um_request_irq failed\n");
+ int err;
+
+ err = um_request_irq(SIGIO_WRITE_IRQ, fd, IRQ_READ, sigio_interrupt,
+ SA_INTERRUPT | SA_SAMPLE_RANDOM, "write sigio",
+ NULL);
+ if(err){
+ printk("write_sigio_irq : um_request_irq failed, err = %d\n",
+ err);
return(-1);
}
sigio_irq_fd = fd;
return(0);
}
-static spinlock_t sigio_spinlock = SPIN_LOCK_UNLOCKED;
+static DEFINE_SPINLOCK(sigio_spinlock);
void sigio_lock(void)
{