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path: root/LUFA/Drivers/USB/Class/Host/CDC.c
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Diffstat (limited to 'LUFA/Drivers/USB/Class/Host/CDC.c')
-rw-r--r--LUFA/Drivers/USB/Class/Host/CDC.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Class/Host/CDC.c b/LUFA/Drivers/USB/Class/Host/CDC.c
index 030ad9464..7f5bcb940 100644
--- a/LUFA/Drivers/USB/Class/Host/CDC.c
+++ b/LUFA/Drivers/USB/Class/Host/CDC.c
@@ -445,6 +445,9 @@ static int CDC_Host_getchar_Blocking(FILE* Stream)
{
while (!(CDC_Host_BytesReceived((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream))))
{
+ if (USB_HostState == HOST_STATE_Unattached)
+ return _FDEV_EOF;
+
CDC_Host_USBTask((USB_ClassInfo_CDC_Host_t*)fdev_get_udata(Stream));
USB_USBTask();
}