Wait for device to disappear after reboot-bootloader.
(Linux only for now) With fastboot reading serial numbers from sysfs, it had
become possible for a fastboot command issued immediately after rebooting
the bootloader to fail, because sysfs still thought the device was online.
To prevent this, after reboot-bootloader we wait for the device to disconnect.
Also made usb_read and usb_write fail immediately if the descriptor has been
closed; this prevents an incorrect error message ("Bad file descriptor")
when errors from fb_getvar are ignored (e.g., by fb_format_supported).
Also removed unused fd param from filter_usb_device, and simplified logic
in usb_write by using do/while instead of a special case for len == 0.
Change-Id: I799b857eab411fd8ad25f5777fc61c685152ea86
diff --git a/fastboot/Android.mk b/fastboot/Android.mk
index 1189e1f..f339988 100644
--- a/fastboot/Android.mk
+++ b/fastboot/Android.mk
@@ -18,7 +18,7 @@
LOCAL_C_INCLUDES := $(LOCAL_PATH)/../mkbootimg \
$(LOCAL_PATH)/../../extras/ext4_utils
-LOCAL_SRC_FILES := protocol.c engine.c bootimg.c fastboot.c
+LOCAL_SRC_FILES := protocol.c engine.c bootimg.c fastboot.c util.c
LOCAL_MODULE := fastboot
LOCAL_MODULE_TAGS := debug
@@ -69,7 +69,7 @@
ifeq ($(HOST_OS),linux)
include $(CLEAR_VARS)
-LOCAL_SRC_FILES := usbtest.c usb_linux.c
+LOCAL_SRC_FILES := usbtest.c usb_linux.c util.c
LOCAL_MODULE := usbtest
include $(BUILD_HOST_EXECUTABLE)
endif