All call sites for randomize_range have been updated to use the much
simpler and more robust randomize_addr. Remove the now unnecessary
code.
Signed-off-by: Jason Cooper <jason@xxxxxxxxxxxxxx>
---
drivers/char/random.c | 19 -------------------
include/linux/random.h | 1 -
2 files changed, 20 deletions(-)
diff --git a/drivers/char/random.c b/drivers/char/random.c
index 61cb434e3bea..46d332dd27a4 100644
--- a/drivers/char/random.c
+++ b/drivers/char/random.c
@@ -1821,25 +1821,6 @@ unsigned long get_random_long(void)
}
EXPORT_SYMBOL(get_random_long);
-/*
- * randomize_range() returns a start address such that
- *
- * [...... <range> .....]
- * start end
- *
- * a <range> with size "len" starting at the return value is inside in the
- * area defined by [start, end], but is otherwise randomized.
- */
-unsigned long
-randomize_range(unsigned long start, unsigned long end, unsigned long len)
-{
- unsigned long range = end - len - start;
-
- if (end <= start + len)
- return 0;
- return PAGE_ALIGN(get_random_int() % range + start);
-}
-
/**
* randomize_page - Generate a random, page aligned address
* @start: The smallest acceptable address the caller will take.
diff --git a/include/linux/random.h b/include/linux/random.h
index 098fec690d65..9281dbbb7f4a 100644
--- a/include/linux/random.h
+++ b/include/linux/random.h
@@ -34,7 +34,6 @@ extern const struct file_operations random_fops, urandom_fops;
unsigned int get_random_int(void);
unsigned long get_random_long(void);
-unsigned long randomize_range(unsigned long start, unsigned long end, unsigned long len);
unsigned long randomize_page(unsigned long start, unsigned long range);
u32 prandom_u32(void);
--
2.9.2
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