__check_region

Langue: en

Autres versions - même langue

Version: June 2009 (debian - 07/07/09)

Section: 9 (Appels noyau Linux)

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.