Changeset 69397 in vbox for trunk

Timestamp:

Oct 26, 2017 6:46:49 PM (7 years ago)

Author:

vboxsync

Message:

Serial: Don't switch to polling mode if the TIOCMIWAIT ioctl was interrupted which is a valid case (when tcsetattr gets called) and broke certain serial devices

File:

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

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

@@ -952 +952 @@
         {
             rcPsx = ioctl(RTFileToNative(pThis->hDeviceFile), TIOCMIWAIT, uStatusLinesToCheck);
-            if (rcPsx < 0)
-            {
-                LogRel(("Serial#%u: Failed to wait for status line change, switch to polling\n", pDrvIns->iInstance));
+            if (rcPsx < 0 && errno != EINTR)
+            {
+                LogRel(("Serial#%u: Failed to wait for status line change with rcPsx=%d errno=%d, switch to polling\n",
+                        pDrvIns->iInstance, rcPsx, errno));
                 fPoll = true;
                 pThis->fStatusLines = statusLines;