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/*
* compat for request_irq
*/
#include <linux/interrupt.h>
#if LINUX_VERSION_CODE < KERNEL_VERSION(2,6,19)
static kvm_irq_handler_t kvm_irq_handlers[NR_IRQS];
static DEFINE_MUTEX(kvm_irq_handlers_mutex);
static irqreturn_t kvm_irq_thunk(int irq, void *dev_id, struct pt_regs *regs)
{
kvm_irq_handler_t handler = kvm_irq_handlers[irq];
return handler(irq, dev_id);
}
int kvm_request_irq(unsigned int a, kvm_irq_handler_t handler,
unsigned long c, const char *d, void *e)
{
int rc = -EBUSY;
kvm_irq_handler_t old;
mutex_lock(&kvm_irq_handlers_mutex);
old = kvm_irq_handlers[a];
if (old)
goto out;
kvm_irq_handlers[a] = handler;
rc = request_irq(a, kvm_irq_thunk, c, d, e);
if (rc)
kvm_irq_handlers[a] = NULL;
out:
mutex_unlock(&kvm_irq_handlers_mutex);
return rc;
}
void kvm_free_irq(unsigned int irq, void *dev_id)
{
mutex_lock(&kvm_irq_handlers_mutex);
free_irq(irq, dev_id);
kvm_irq_handlers[irq] = NULL;
mutex_unlock(&kvm_irq_handlers_mutex);
}
#endif
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