Dmitry Timoshkov : ntdll: Fallback to ioctl(TIOCOUTQ) if ioctl( TIOCSERGETLSR) fails.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: e3dcdadaca4ff620ab55b4542af27ada6d2db819
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=e3dcdadaca4ff620ab55b4542af27ada6d2db819

Author: Dmitry Timoshkov <dmitry at baikal.ru>
Date:   Tue Aug 27 17:40:17 2013 +0900

ntdll: Fallback to ioctl(TIOCOUTQ) if ioctl(TIOCSERGETLSR) fails.

Most Linux USB-serial drivers don't support TIOCSERGETLSR.

---

 dlls/ntdll/serial.c |   12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/dlls/ntdll/serial.c b/dlls/ntdll/serial.c
index 91e7230..bb025cf 100644
--- a/dlls/ntdll/serial.c
+++ b/dlls/ntdll/serial.c
@@ -828,12 +828,12 @@ static NTSTATUS get_irq_info(int fd, serial_irq_info *irq_info)
     irq_info->temt = 0;
     /* Generate a single TX_TXEMPTY event when the TX Buffer turns empty*/
 #ifdef TIOCSERGETLSR  /* prefer to log the state TIOCSERGETLSR */
-    if (ioctl(fd, TIOCSERGETLSR, &irq_info->temt))
-    {
-        TRACE("TIOCSERGETLSR err %s\n", strerror(errno));
-        return FILE_GetNtStatus();
-    }
-#elif defined(TIOCOUTQ)  /* otherwise we log when the out queue gets empty */
+    if (!ioctl(fd, TIOCSERGETLSR, &irq_info->temt))
+        return STATUS_SUCCESS;
+
+    TRACE("TIOCSERGETLSR err %s\n", strerror(errno));
+#endif
+#ifdef TIOCOUTQ  /* otherwise we log when the out queue gets empty */
     if (ioctl(fd, TIOCOUTQ, &irq_info->temt))
     {
         TRACE("TIOCOUTQ err %s\n", strerror(errno));