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| author | Tony Lindgren <tony@atomide.com> | 2011-01-11 01:23:41 +0300 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2011-01-11 01:23:41 +0300 |
| commit | 274353674dd0337bdeeaee08a9f2047777b07ab0 (patch) | |
| tree | b788d77dd7c0e8f27bbcc89fc742c212c28872c0 /mm/util.c | |
| parent | 1740d483ba4d79f9fa6984dccd7152b6b208f1bf (diff) | |
| parent | d7cd5c73cec2dfa9f259a2adcf802c9f8fcc125f (diff) | |
| download | linux-274353674dd0337bdeeaee08a9f2047777b07ab0.tar.xz | |
Merge branch 'ehci-omap-clock' into omap-fixes
Diffstat (limited to 'mm/util.c')
| -rw-r--r-- | mm/util.c | 21 |
1 files changed, 0 insertions, 21 deletions
diff --git a/mm/util.c b/mm/util.c index 73dac81e9f78..f126975ef23e 100644 --- a/mm/util.c +++ b/mm/util.c @@ -186,27 +186,6 @@ void kzfree(const void *p) } EXPORT_SYMBOL(kzfree); -int kern_ptr_validate(const void *ptr, unsigned long size) -{ - unsigned long addr = (unsigned long)ptr; - unsigned long min_addr = PAGE_OFFSET; - unsigned long align_mask = sizeof(void *) - 1; - - if (unlikely(addr < min_addr)) - goto out; - if (unlikely(addr > (unsigned long)high_memory - size)) - goto out; - if (unlikely(addr & align_mask)) - goto out; - if (unlikely(!kern_addr_valid(addr))) - goto out; - if (unlikely(!kern_addr_valid(addr + size - 1))) - goto out; - return 1; -out: - return 0; -} - /* * strndup_user - duplicate an existing string from user space * @s: The string to duplicate |