Merged in hardlulz/modem-3.0-nuttx/fix-sem-EINTR (pull request #603)

Added ECANCELED condition to DEBUGASSERT-s checking sem_wait result

Approved-by: Gregory Nutt <gnutt@nuttx.org>

drivers/sensors/xen1210.c

@@ -179,7 +179,7 @@ static ssize_t xen1210_read(FAR struct file *filep, FAR char *buffer,
       /* This should only happen if the wait was canceled by an signal */
 
       snerr("Failed: Cannot get exclusive access to driver structure!\n");
-      DEBUGASSERT(ret == -EINTR);
+      DEBUGASSERT(ret == -EINTR || ret == -ECANCELED);
       return ret;
     }