Changeset 73243 in vbox for trunk/src/VBox/Devices/Serial/DrvCharNew.cpp

Timestamp:

Jul 19, 2018 3:08:34 PM (6 years ago)

Author:

vboxsync

Message:

Devices/Serial: Add missing implementation for character timeout indication when the FIFO is enabled, add 16750 implementation which provides 64byte FIFOs, additional number of bug fixes

File:

• trunk/src/VBox/Devices/Serial/DrvCharNew.cpp (modified) (1 diff)

trunk/src/VBox/Devices/Serial/DrvCharNew.cpp

@@ -231 +231 @@
                     AssertRC(rc);
 
-                    ASMAtomicSubZ(&pThis->cbAvailWr, cbFetched);
-                    pThis->cbTxUsed += cbFetched;
+                    if (cbFetched > 0)
+                    {
+                        ASMAtomicSubZ(&pThis->cbAvailWr, cbFetched);
+                        pThis->cbTxUsed += cbFetched;
+                    }
+                    else
+                    {
+                        /* The guest reset the send queue and there is no data available anymore. */
+                        pThis->cbAvailWr = 0;
+                    }
                 }