[PATCH 6/9] test: Probe RTC early in dm_test_host()

The ext4 driver probes and reads the RTC which allocates memory.

Ensure that the device is already probed and read once in dm_test_hook()
to avoid false positives.

Signed-off-by: Heinrich Schuchardt <[email protected]>
---
 test/dm/host.c | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/test/dm/host.c b/test/dm/host.c
index f577377da6a..32a9818248a 100644
--- a/test/dm/host.c
+++ b/test/dm/host.c
@@ -8,6 +8,7 @@
 #include <dm.h>
 #include <fs.h>
 #include <os.h>
+#include <rtc.h>
 #include <sandbox_host.h>
 #include <asm/test.h>
 #include <dm/device-internal.h>
@@ -26,6 +27,18 @@ static int dm_test_host(struct unit_test_state *uts)
 	ulong mem_start;
 	loff_t actwrite;
 
+	/*
+	 * Probing and first read from the RTC allocates memory.
+	 * Do it before the measurement.
+	 */
+	if (CONFIG_IS_ENABLED(DM_RTC)) {
+		struct rtc_time tm;
+
+		uclass_first_device(UCLASS_RTC, &dev);
+		if (dev)
+			dm_rtc_get(dev, &tm);
+	}
+
 	ut_asserteq(-ENODEV, uclass_first_device_err(UCLASS_HOST, &dev));
 	ut_asserteq(-ENODEV, uclass_first_device_err(UCLASS_PARTITION, &part));
 
-- 
2.53.0