INDEX

NAME, SYNOPSIS, ARGUMENTS, DESCRIPTION, NOTE, COPYRIGHT

"__CHECK_REGION" "9" "July 2007" "Kernel Hackers Manual 2.6.22" "Hardware Interfaces"

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 -EBUSYfR
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_regionfR
may fail because another driver etc. just allocated the region. Do NOT use it. It will be removed from the kernel.

COPYRIGHT

Possibly related

raw nroff source of __check_region(9)