X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/f37d21bbe961a72e4d6527767aacf843e3af412c..5aa2b26261389cfbdfae8e793be4b8150ddc7a0a:/LUFA/Drivers/USB/Class/Host/Printer.c

diff --git a/LUFA/Drivers/USB/Class/Host/Printer.c b/LUFA/Drivers/USB/Class/Host/Printer.c
index 192e17f86..d85ac15cf 100644
--- a/LUFA/Drivers/USB/Class/Host/Printer.c
+++ b/LUFA/Drivers/USB/Class/Host/Printer.c
@@ -187,6 +187,9 @@ uint8_t PRNT_Host_SendData(USB_ClassInfo_PRNT_Host_t* const PRNTInterfaceInfo, v
 {
 	uint8_t ErrorCode;
 
+	if ((USB_HostState != HOST_STATE_Configured) || !(PRNTInterfaceInfo->State.IsActive))
+	  return PIPE_RWSTREAM_DeviceDisconnected;
+
 	Pipe_SelectPipe(PRNTInterfaceInfo->Config.DataOUTPipeNumber);
 	Pipe_Unfreeze();