From dcaf33ce01fc7ef5b297909827fddc28e326543c Mon Sep 17 00:00:00 2001
From: XANTRONIX Development <dev@xantronix.com>
Date: Fri, 10 Jun 2016 22:12:22 +0000
Subject: [PATCH] I *really* care about reliability and error detection!

---
 include/tabby/printer.h |  3 +++
 src/printer.c           | 13 +++++++++++--
 2 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/include/tabby/printer.h b/include/tabby/printer.h
index 4a75f56..6400b75 100644
--- a/include/tabby/printer.h
+++ b/include/tabby/printer.h
@@ -26,6 +26,9 @@ typedef enum {
     TABBY_PRINTER_OK     = 0
 } tabby_printer_status;
 
+#define TABBY_PRINTER_WAIT  0x0e
+#define TABBY_PRINTER_ERROR 0xf0
+
 typedef enum {
     TABBY_PRINTER_PACKET_INIT    = 0x01,
     TABBY_PRINTER_PACKET_JOB     = 0x02,
diff --git a/src/printer.c b/src/printer.c
index 47a87f3..3c85a59 100644
--- a/src/printer.c
+++ b/src/printer.c
@@ -197,16 +197,25 @@ int tabby_printer_job_cancel(tabby_printer *printer) {
 }
 
 int tabby_printer_wait(tabby_printer *printer) {
-    do {
+    while (1) {
         sleep(1);
 
         if (tabby_printer_inquiry_send(printer) < 0) {
             goto error_inquiry_send;
         }
-    } while (printer->status);
+
+        if (printer->status & (TABBY_PRINTER_WAIT | TABBY_PRINTER_SUM)) {
+            continue;
+        } else if (printer->status & TABBY_PRINTER_ERROR) {
+            goto error_printer;
+        } else {
+            break;
+        }
+    }
 
     return 0;
 
+error_printer:
 error_inquiry_send:
     return -1;
 }