#include <linux/spinlock.h>
#include <linux/mutex.h>
#include <linux/mm.h>
+#include <linux/smp_lock.h>
#include <asm/openprom.h>
#include <asm/oplib.h>
int init_vfc_devstruct(struct vfc_dev *dev, int instance)
{
dev->instance=instance;
- init_MUTEX(&dev->device_lock_sem);
+ mutex_init(&dev->device_lock_mtx);
dev->control_reg=0;
dev->busy=0;
return 0;
{
struct vfc_dev *dev;
+ lock_kernel();
spin_lock(&vfc_dev_lock);
dev = vfc_get_dev_ptr(iminor(inode));
if (dev == NULL) {
spin_unlock(&vfc_dev_lock);
+ unlock_kernel();
return -ENODEV;
}
if (dev->busy) {
spin_unlock(&vfc_dev_lock);
+ unlock_kernel();
return -EBUSY;
}
vfc_captstat_reset(dev);
vfc_unlock_device(dev);
+ unlock_kernel();
return 0;
}