static status_t
FreeHook(void *dev)
{
TRACE("FreeHook\n");
ACQUIRE_BEN(gPd->kernel);
if (gPd->isOpen < 2) {
UnmapDevice();
FreeShared();
}
gPd->isOpen--;
RELEASE_BEN(gPd->kernel);
TRACE("FreeHook ends\n");
return B_OK;
}
static status_t
device_free(void* dev)
{
DeviceInfo& di = *((DeviceInfo*)dev);
SharedInfo& si = *(di.sharedInfo);
pci_info& pciInfo = di.pciInfo;
TRACE("enter device_free()\n");
gLock.Acquire(); // lock driver
// If opened multiple times, merely decrement the open count and exit.
if (di.openCount <= 1) {
DisableVBI(); // disable & clear any pending interrupts
if (si.bInterruptAssigned) {
remove_io_interrupt_handler(pciInfo.u.h0.interrupt_line,
InterruptHandler, &di);
}
// Delete the semaphores, ignoring any errors because the owning team
// may have died.
if (si.vertBlankSem >= 0)
delete_sem(si.vertBlankSem);
si.vertBlankSem = -1;
UnmapDevice(di); // free regs and frame buffer areas
delete_area(di.sharedArea);
di.sharedArea = -1;
di.sharedInfo = NULL;
}
if (di.openCount > 0)
di.openCount--; // mark device available
gLock.Release(); // unlock driver
TRACE("exit device_free() openCount: %ld\n", di.openCount);
return B_OK;
}
