| * Copyright (C) 2002 - 2003 Jeff Dike (jdike@addtoit.com) |
| #include "linux/kernel.h" |
| #include "linux/signal.h" |
| #include "linux/interrupt.h" |
| /* Protected by sigio_lock() called from write_sigio_workaround */ |
| static int sigio_irq_fd = -1; |
| 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) |
| err = um_request_irq(SIGIO_WRITE_IRQ, fd, IRQ_READ, sigio_interrupt, |
| SA_INTERRUPT | SA_SAMPLE_RANDOM, "write sigio", |
| printk("write_sigio_irq : um_request_irq failed, err = %d\n", |
| static DEFINE_SPINLOCK(sigio_spinlock); |
| spin_lock(&sigio_spinlock); |
| spin_unlock(&sigio_spinlock); |
| * Overrides for Emacs so that we follow Linus's tabbing style. |
| * Emacs will notice this stuff at the end of the file and automatically |
| * adjust the settings for this buffer only. This must remain at the end |
| * --------------------------------------------------------------------------- |