[PATCH v4 05/23] bootstd: Create a function to reset USB

[Simon Glass]

Set up a function for this, since it needs to be used from multiple test
files.

This test file is only used on sandbox, where USB is enabled, so drop
the local declaration of usb_started

Signed-off-by: Simon Glass <sjg at chromium.org>
---

(no changes since v3)

Changes in v3:
- Include the usb.h header file in all cases

 test/boot/bootdev.c        | 19 ++++++-------------
 test/boot/bootstd_common.c |  6 ++++++
 test/boot/bootstd_common.h |  8 ++++++++
 3 files changed, 20 insertions(+), 13 deletions(-)

diff --git a/test/boot/bootdev.c b/test/boot/bootdev.c
index 23ebc61ff52..c635d06ec25 100644
--- a/test/boot/bootdev.c
+++ b/test/boot/bootdev.c
@@ -16,13 +16,6 @@
 #include <test/ut.h>
 #include "bootstd_common.h"
 
-/* Allow reseting the USB-started flag */
-#if defined(CONFIG_USB_HOST) || defined(CONFIG_USB_GADGET)
-extern bool usb_started;
-#else
-#include <usb.h>
-#endif
-
 /* Check 'bootdev list' command */
 static int bootdev_test_cmd_list(struct unit_test_state *uts)
 {
@@ -197,7 +190,7 @@ static int bootdev_test_order(struct unit_test_state *uts)
 	test_set_skip_delays(true);
 
 	/* Start up USB which gives us three additional bootdevs */
-	usb_started = false;
+	bootstd_reset_usb();
 	ut_assertok(run_command("usb start", 0));
 
 	/*
@@ -313,7 +306,7 @@ static int bootdev_test_prio(struct unit_test_state *uts)
 	test_set_eth_enable(false);
 
 	/* Start up USB which gives us three additional bootdevs */
-	usb_started = false;
+	bootstd_reset_usb();
 	ut_assertok(run_command("usb start", 0));
 
 	ut_assertok(bootstd_test_drop_bootdev_order(uts));
@@ -352,7 +345,7 @@ static int bootdev_test_hunter(struct unit_test_state *uts)
 {
 	struct bootstd_priv *std;
 
-	usb_started = false;
+	bootstd_reset_usb();
 	test_set_skip_delays(true);
 
 	/* get access to the used hunters */
@@ -392,7 +385,7 @@ static int bootdev_test_cmd_hunt(struct unit_test_state *uts)
 	struct bootstd_priv *std;
 
 	test_set_skip_delays(true);
-	usb_started = false;
+	bootstd_reset_usb();
 
 	/* get access to the used hunters */
 	ut_assertok(bootstd_get_priv(&std));
@@ -520,7 +513,7 @@ BOOTSTD_TEST(bootdev_test_bootable, UTF_DM | UTF_SCAN_FDT);
 /* Check hunting for bootdev of a particular priority */
 static int bootdev_test_hunt_prio(struct unit_test_state *uts)
 {
-	usb_started = false;
+	bootstd_reset_usb();
 	test_set_skip_delays(true);
 
 	ut_assertok(bootdev_hunt_prio(BOOTDEVP_4_SCAN_FAST, false));
@@ -548,7 +541,7 @@ static int bootdev_test_hunt_label(struct unit_test_state *uts)
 	struct bootstd_priv *std;
 	int mflags;
 
-	usb_started = false;
+	bootstd_reset_usb();
 
 	/* get access to the used hunters */
 	ut_assertok(bootstd_get_priv(&std));
diff --git a/test/boot/bootstd_common.c b/test/boot/bootstd_common.c
index e50539500a0..ff8ed2303b3 100644
--- a/test/boot/bootstd_common.c
+++ b/test/boot/bootstd_common.c
@@ -11,6 +11,7 @@
 #include <dm.h>
 #include <memalign.h>
 #include <mmc.h>
+#include <usb.h>
 #include <linux/log2.h>
 #include <test/suites.h>
 #include <test/ut.h>
@@ -88,6 +89,11 @@ int bootstd_test_check_mmc_hunter(struct unit_test_state *uts)
 	return 0;
 }
 
+void bootstd_reset_usb(void)
+{
+	usb_started = false;
+}
+
 int do_ut_bootstd(struct cmd_tbl *cmdtp, int flag, int argc, char *const argv[])
 {
 	struct unit_test *tests = UNIT_TEST_SUITE_START(bootstd_test);
diff --git a/test/boot/bootstd_common.h b/test/boot/bootstd_common.h
index 4a126e43ff4..e29036c897c 100644
--- a/test/boot/bootstd_common.h
+++ b/test/boot/bootstd_common.h
@@ -53,4 +53,12 @@ int bootstd_setup_for_tests(void);
  */
 int bootstd_test_check_mmc_hunter(struct unit_test_state *uts);
 
+/**
+ * bootstd_reset_usb() - Reset the USB subsystem
+ *
+ * Resets USB so that it can be started (and scanning) again. This is useful in
+ * tests which need to use USB.
+ */
+void bootstd_reset_usb(void);
+
 #endif
-- 
2.34.1