mtd: tests: use random32 instead of home-brewed generator
This is a clean-up patch which removes the own pseudo-random numbers generator
from the speed- and stress-tests and makes them use the 'random32()' generator
instead.
[dwmw2: Merge later fix for negative offsets]
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
diff --git a/drivers/mtd/tests/mtd_speedtest.c b/drivers/mtd/tests/mtd_speedtest.c
index 2aec4f3..42b0f74 100644
--- a/drivers/mtd/tests/mtd_speedtest.c
+++ b/drivers/mtd/tests/mtd_speedtest.c
@@ -26,6 +26,7 @@
#include <linux/mtd/mtd.h>
#include <linux/slab.h>
#include <linux/sched.h>
+#include <linux/random.h>
#define PRINT_PREF KERN_INFO "mtd_speedtest: "
@@ -47,25 +48,13 @@
static int pgcnt;
static int goodebcnt;
static struct timeval start, finish;
-static unsigned long next = 1;
-
-static inline unsigned int simple_rand(void)
-{
- next = next * 1103515245 + 12345;
- return (unsigned int)((next / 65536) % 32768);
-}
-
-static inline void simple_srand(unsigned long seed)
-{
- next = seed;
-}
static void set_random_data(unsigned char *buf, size_t len)
{
size_t i;
for (i = 0; i < len; ++i)
- buf[i] = simple_rand();
+ buf[i] = random32();
}
static int erase_eraseblock(int ebnum)
@@ -407,7 +396,6 @@
goto out;
}
- simple_srand(1);
set_random_data(iobuf, mtd->erasesize);
err = scan_for_bad_eraseblocks();