Name
__check_region —
check if a resource region is busy or free
Synopsis
int __check_region ( | struct resource * | parent, |
| | resource_size_t | start, |
| | resource_size_t | n); |
Arguments
parent
parent resource descriptor
start
resource start address
n
resource region size
Description
Returns 0 if the region is free at the moment it is checked,
returns -EBUSY if the region is busy.
NOTE
This function is deprecated because its use is racy.
Even if it returns 0, a subsequent call to request_region
may fail because another driver etc. just allocated the region.
Do NOT use it. It will be removed from the kernel.