[PATCH v6 06/20] stdio: Fix class iteration in stdio_add_devices()

[Michal Suchanek]

There is a complaint in the code that iterates keyboards that we don't
have the _check variant of class iterator but we in fact do, use it.

In the code that iterates video devices there is an attempt to print
errors but the simple iterator does not return a device when there is an
error. Use the _check variant of the iterator as well.

Also format error messages consistently.

Signed-off-by: Michal Suchanek <msuchanek at suse.de>
Reviewed-by: Simon Glass <sjg at chromium.org>
---
v6:
 - drop errno_str
 - fix dev vs vdev in video error print
---
 common/stdio.c | 32 +++++++++++++-------------------
 1 file changed, 13 insertions(+), 19 deletions(-)

diff --git a/common/stdio.c b/common/stdio.c
index 13083842cb..e316a355fa 100644
--- a/common/stdio.c
+++ b/common/stdio.c
@@ -314,7 +314,6 @@ int stdio_init_tables(void)
 int stdio_add_devices(void)
 {
 	struct udevice *dev;
-	struct uclass *uc;
 	int ret;
 
 	if (IS_ENABLED(CONFIG_DM_KEYBOARD)) {
@@ -324,24 +323,18 @@ int stdio_add_devices(void)
 		 * have a list of input devices to start up in the stdin
 		 * environment variable. That work probably makes more sense
 		 * when stdio itself is converted to driver model.
-		 *
-		 * TODO(sjg at chromium.org): Convert changing
-		 * uclass_first_device() etc. to return the device even on
-		 * error. Then we could use that here.
 		 */
-		ret = uclass_get(UCLASS_KEYBOARD, &uc);
-		if (ret)
-			return ret;
 
 		/*
 		 * Don't report errors to the caller - assume that they are
 		 * non-fatal
 		 */
-		uclass_foreach_dev(dev, uc) {
-			ret = device_probe(dev);
+		for (ret = uclass_first_device_check(UCLASS_KEYBOARD, &dev);
+				dev;
+				ret = uclass_next_device_check(&dev)) {
 			if (ret)
-				printf("Failed to probe keyboard '%s'\n",
-				       dev->name);
+				printf("%s: Failed to probe keyboard '%s' (ret=%d)\n",
+				       __func__, dev->name, ret);
 		}
 	}
 #if CONFIG_IS_ENABLED(SYS_I2C_LEGACY)
@@ -361,13 +354,14 @@ int stdio_add_devices(void)
 		int ret;
 
 		if (!IS_ENABLED(CONFIG_SYS_CONSOLE_IS_IN_ENV)) {
-			for (ret = uclass_first_device(UCLASS_VIDEO, &vdev);
-			     vdev;
-			     ret = uclass_next_device(&vdev))
-				;
-			if (ret)
-				printf("%s: Video device failed (ret=%d)\n",
-				       __func__, ret);
+			for (ret = uclass_first_device_check(UCLASS_VIDEO,
+							     &vdev);
+					vdev;
+					ret = uclass_next_device_check(&vdev)) {
+				if (ret)
+					printf("%s: Failed to probe video device '%s' (ret=%d)\n",
+					       __func__, vdev->name, ret);
+			}
 		}
 		if (IS_ENABLED(CONFIG_SPLASH_SCREEN) &&
 		    IS_ENABLED(CONFIG_CMD_BMP))
-- 
2.37.3