test: Avoid random numbers in dm_test_devm_regmap()

There is no good reason to use a sequence from rand() here. We may as well
invent our own sequence.

This should molify Coverity which does not use rand() being used.

Signed-off-by: Simon Glass <sjg@chromium.org>
Reported-by: Coverity (CID: 312949)

diff --git a/test/dm/regmap.c b/test/dm/regmap.c
index 372a73c..04bb164 100644 (file)
--- a/test/dm/regmap.c
+++ b/test/dm/regmap.c
@@ -306,9 +306,8 @@ static int dm_test_devm_regmap(struct unit_test_state *uts)
                                              &dev));
        priv = dev_get_priv(dev);
 
-       srand(get_ticks() + rand());
        for (i = 0; i < REGMAP_TEST_BUF_SZ; i++) {
-               pattern[i] = rand();
+               pattern[i] = i * 0x87654321;
                ut_assertok(regmap_write(priv->cfg_regmap, i, pattern[i]));
        }
        for (i = 0; i < REGMAP_TEST_BUF_SZ; i++) {