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kernel/resource.c: remove deprecated __check_region() and friends 

All users of __check_region(), check_region(), and check_mem_region() are
gone.  We got rid of the last user in v4.0-rc1.  Remove them.

bloat-o-meter on x86_64 shows:

add/remove: 0/3 grow/shrink: 0/0 up/down: 0/-102 (-102)
function                                     old     new   delta
__kstrtab___check_region                      15       -     -15
__ksymtab___check_region                      16       -     -16
__check_region                                71       -     -71

Signed-off-by: Jakub Sitnicki <jsitnicki@gmail.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
hifive-unleashed-5.1
Jakub Sitnicki 2015-04-15 16:16:44 -07:00 committed by Linus Torvalds
parent 2813893f8b
commit 96831c0a67
2 changed files with 0 additions and 40 deletions
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8
include/linux/ioport.h
View File

@ -196,10 +196,8 @@ extern struct resource * __request_region(struct resource *,
/* Compatibility cruft */
#define release_region(start,n) __release_region(&ioport_resource, (start), (n))
#define check_mem_region(start,n) __check_region(&iomem_resource, (start), (n))
#define release_mem_region(start,n) __release_region(&iomem_resource, (start), (n))
extern int __check_region(struct resource *, resource_size_t, resource_size_t);
extern void __release_region(struct resource *, resource_size_t,
resource_size_t);
#ifdef CONFIG_MEMORY_HOTREMOVE
@ -207,12 +205,6 @@ extern int release_mem_region_adjustable(struct resource *, resource_size_t,
resource_size_t);
#endif
static inline int __deprecated check_region(resource_size_t s,
resource_size_t n)
{
return __check_region(&ioport_resource, s, n);
}
/* Wrappers for managed devices */
struct device;

32
kernel/resource.c
View File

@ -1034,8 +1034,6 @@ resource_size_t resource_alignment(struct resource *res)
*
* request_region creates a new busy region.
*
* check_region returns non-zero if the area is already busy.
*
* release_region releases a matching busy region.
*/
@ -1097,36 +1095,6 @@ struct resource * __request_region(struct resource *parent,
}
EXPORT_SYMBOL(__request_region);
/**
* __check_region - check if a resource region is busy or free
* @parent: parent resource descriptor
* @start: resource start address
* @n: resource region size
*
* 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.
*/
int __check_region(struct resource *parent, resource_size_t start,
resource_size_t n)
{
struct resource * res;
res = __request_region(parent, start, n, "check-region", 0);
if (!res)
return -EBUSY;
release_resource(res);
free_resource(res);
return 0;
}
EXPORT_SYMBOL(__check_region);
/**
* __release_region - release a previously reserved resource region
* @parent: parent resource descriptor