[PATCH v10 1/3] test: fix test/dm/regmap.c

[Heinrich Schuchardt]

regmap_read() only fills the first two bytes of val. The last two bytes are
random data from the stack. This means the test will fail randomly.

For low endian systems we could simply initialize val to 0 and get correct
results. But tests should not depend on endianness. So let's use a pointer
conversion instead.

Signed-off-by: Heinrich Schuchardt <xypron.glpk at gmx.de>
---
v10:
	new patch
---
 test/dm/regmap.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/test/dm/regmap.c b/test/dm/regmap.c
index 22a293096c..372a73ca0c 100644
--- a/test/dm/regmap.c
+++ b/test/dm/regmap.c
@@ -286,7 +286,8 @@ U_BOOT_DRIVER(regmap_test) = {
 static int dm_test_devm_regmap(struct unit_test_state *uts)
 {
 	int i = 0;
-	u32 val;
+	u16 val;
+	void *valp = &val;
 	u16 pattern[REGMAP_TEST_BUF_SZ];
 	u16 *buffer;
 	struct udevice *dev;
@@ -311,7 +312,7 @@ static int dm_test_devm_regmap(struct unit_test_state *uts)
 		ut_assertok(regmap_write(priv->cfg_regmap, i, pattern[i]));
 	}
 	for (i = 0; i < REGMAP_TEST_BUF_SZ; i++) {
-		ut_assertok(regmap_read(priv->cfg_regmap, i, &val));
+		ut_assertok(regmap_read(priv->cfg_regmap, i, valp));
 		ut_asserteq(val, buffer[i]);
 		ut_asserteq(val, pattern[i]);
 	}
@@ -319,9 +320,9 @@ static int dm_test_devm_regmap(struct unit_test_state *uts)
 	ut_asserteq(-ERANGE, regmap_write(priv->cfg_regmap, REGMAP_TEST_BUF_SZ,
 					  val));
 	ut_asserteq(-ERANGE, regmap_read(priv->cfg_regmap, REGMAP_TEST_BUF_SZ,
-					 &val));
+					 valp));
 	ut_asserteq(-ERANGE, regmap_write(priv->cfg_regmap, -1, val));
-	ut_asserteq(-ERANGE, regmap_read(priv->cfg_regmap, -1, &val));
+	ut_asserteq(-ERANGE, regmap_read(priv->cfg_regmap, -1, valp));

 	return 0;
 }
--
2.30.2