Index: uspace/lib/usbhost/src/ddf_helpers.c
===================================================================
--- uspace/lib/usbhost/src/ddf_helpers.c	(revision f523daf346325c97c3656cc44051111be95b9e84)
+++ uspace/lib/usbhost/src/ddf_helpers.c	(revision f29643d55ae56a73135a7267949c9bf237362002)
@@ -470,8 +470,9 @@
 	int ret = usb_bus_get_speed(&hcd->bus, USB_ADDRESS_DEFAULT, &speed);
 	if (ret != EOK) {
-		return ret;
-	}
-
-	usb_log_debug("Found new %s speed USB device\n", usb_str_speed(speed));
+		usb_log_error("Failed to verify speed: %s.", str_error(ret));
+		return ret;
+	}
+
+	usb_log_debug("Found new %s speed USB device.", usb_str_speed(speed));
 
 	static const usb_target_t default_target = {{
@@ -481,6 +482,9 @@
 
 	const usb_address_t address = hcd_request_address(hcd, speed);
-	if (address < 0)
+	if (address < 0) {
+		usb_log_error("Failed to reserve new address: %s.",
+		    str_error(address));
 		return address;
+	}
 
 	usb_log_debug("Reserved new address: %d\n", address);
@@ -500,4 +504,6 @@
 	    tt_address, port);
 	if (ret != EOK) {
+		usb_log_error("Device(%d): Failed to add default target: %s.",
+		    address, str_error(ret));
 		hcd_release_address(hcd, address);
 		return ret;
@@ -510,5 +516,5 @@
 
 	// TODO CALLBACKS
-	usb_log_debug("Device(%d): Requesting first 8B of device descriptor\n",
+	usb_log_debug("Device(%d): Requesting first 8B of device descriptor.",
 	    address);
 	ssize_t got = hcd_send_batch_sync(hcd, default_target, USB_DIRECTION_IN,
@@ -517,11 +523,14 @@
 
 	if (got != CTRL_PIPE_MIN_PACKET_SIZE) {
+		ret = got < 0 ? got : EOVERFLOW;
+		usb_log_error("Device(%d): Failed to get 8B of dev descr: %s.",
+		    address, str_error(ret));
 		hcd_remove_ep(hcd, default_target, USB_DIRECTION_BOTH);
 		hcd_release_address(hcd, address);
-		return got < 0 ? got : EOVERFLOW;
+		return ret;
 	}
 
 	/* Register EP on the new address */
-	usb_log_debug("Device(%d): Registering control EP\n", address);
+	usb_log_debug("Device(%d): Registering control EP.", address);
 	ret = hcd_add_ep(hcd, target, USB_DIRECTION_BOTH, USB_TRANSFER_CONTROL,
 	    ED_MPS_PACKET_SIZE_GET(uint16_usb2host(desc.max_packet_size)),
@@ -530,4 +539,6 @@
 	    tt_address, port);
 	if (ret != EOK) {
+		usb_log_error("Device(%d): Failed to register EP0: %s",
+		    address, str_error(ret));
 		hcd_remove_ep(hcd, default_target, USB_DIRECTION_BOTH);
 		hcd_remove_ep(hcd, target, USB_DIRECTION_BOTH);
@@ -540,12 +551,14 @@
 	    SET_ADDRESS(target.address);
 
-	usb_log_debug("Device(%d): Setting USB address.\n", address);
+	usb_log_debug("Device(%d): Setting USB address.", address);
 	got = hcd_send_batch_sync(hcd, default_target, USB_DIRECTION_OUT,
 	    NULL, 0, *(uint64_t *)&set_address, "set address");
 
-	usb_log_debug("Device(%d): Removing default (0:0) EP\n", address);
+	usb_log_debug("Device(%d): Removing default (0:0) EP.", address);
 	hcd_remove_ep(hcd, default_target, USB_DIRECTION_BOTH);
 
 	if (got != 0) {
+		usb_log_error("Device(%d): Failed to set new address: %s.",
+		    address, str_error(got));
 		hcd_remove_ep(hcd, target, USB_DIRECTION_BOTH);
 		hcd_release_address(hcd, address);
@@ -557,5 +570,5 @@
 	    GET_DEVICE_DESC(sizeof(desc));
 
-	usb_log_debug("Device(%d): Requesting full device descriptor\n",
+	usb_log_debug("Device(%d): Requesting full device descriptor.",
 	    address);
 	got = hcd_send_batch_sync(hcd, target, USB_DIRECTION_IN,
@@ -563,7 +576,9 @@
 	    "read device descriptor");
 	if (ret != EOK) {
+		usb_log_error("Device(%d): Failed to set get dev descriptor: %s",
+		    address, str_error(ret));
 		hcd_remove_ep(hcd, target, USB_DIRECTION_BOTH);
 		hcd_release_address(hcd, target.address);
-		return got < 0 ? got : EOVERFLOW;
+		return ret;
 	}
 
@@ -572,7 +587,9 @@
 	init_match_ids(&mids);
 
-	usb_log_debug("Device(%d): Creating match IDs\n", address);
+	usb_log_debug("Device(%d): Creating match IDs.", address);
 	ret = create_match_ids(&mids, &desc);
 	if (ret != EOK) {
+		usb_log_error("Device(%d): Failed to create match ids: %s",
+		    address, str_error(ret));
 		hcd_remove_ep(hcd, target, USB_DIRECTION_BOTH);
 		hcd_release_address(hcd, target.address);
@@ -581,8 +598,10 @@
 
 	/* Register device */
-	usb_log_debug("Device(%d): Registering DDF device\n", address);
+	usb_log_debug("Device(%d): Registering DDF device.", address);
 	ret = hcd_ddf_add_device(device, hub, port, address, speed, NULL, &mids);
 	clean_match_ids(&mids);
 	if (ret != EOK) {
+		usb_log_error("Device(%d): Failed to register: %s.",
+		    address, str_error(ret));
 		hcd_remove_ep(hcd, target, USB_DIRECTION_BOTH);
 		hcd_release_address(hcd, target.address);
@@ -844,12 +863,4 @@
 	}
 
-	if (driver->claim)
-		ret = driver->claim(device);
-	if (ret != EOK) {
-		usb_log_error("Failed to claim `%s' for driver `%s'",
-		    ddf_dev_get_name(device), driver->name);
-		return ret;
-	}
-
 	hw_res_list_parsed_t hw_res;
 	ret = hcd_ddf_get_registers(device, &hw_res);
@@ -875,4 +886,13 @@
 		usb_log_debug("Hw interrupts enabled.\n");
 	}
+
+	if (driver->claim)
+		ret = driver->claim(device);
+	if (ret != EOK) {
+		usb_log_error("Failed to claim `%s' for driver `%s'",
+		    ddf_dev_get_name(device), driver->name);
+		return ret;
+	}
+
 
 	/* Init hw driver */