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From e675e8ae59a4eb6a39fa9d1f13011fd4e718ce67 Mon Sep 17 00:00:00 2001
From: Fam Zheng <famz@redhat.com>
Date: Thu, 18 May 2017 09:21:16 +0200
Subject: [PATCH 03/18] char/serial: serial_ioport_write: Factor out common
 code
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RH-Author: Fam Zheng <famz@redhat.com>
Message-id: <20170518092131.16571-4-famz@redhat.com>
Patchwork-id: 75295
O-Subject: [RHEL-7.4 qemu-kvm PATCH v3 03/18] char/serial: serial_ioport_write: Factor out common code
Bugzilla: 1451470
RH-Acked-by: Paolo Bonzini <pbonzini@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Eduardo Habkost <ehabkost@redhat.com>

From: Peter Crosthwaite <peter.crosthwaite@xilinx.com>

These three lines are common to both FIFO and regular mode. Just factor
them out to outside the if rather than replicate the same lines inside
both if and else.

Cc: qemu-trivial@nongnu.org

Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Reviewed-by: Andreas Färber <afaerber@suse.de>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
(cherry picked from commit b5601df7624b461759651c49ac72a189951780b9)
Signed-off-by: Fam Zheng <famz@redhat.com>
Signed-off-by: Miroslav Rezanina <mrezanin@redhat.com>
---
 hw/char/serial.c | 10 +++-------
 1 file changed, 3 insertions(+), 7 deletions(-)

diff --git a/hw/char/serial.c b/hw/char/serial.c
index 0d4450e..72112cc 100644
--- a/hw/char/serial.c
+++ b/hw/char/serial.c
@@ -286,15 +286,11 @@ static void serial_ioport_write(void *opaque, hwaddr addr, uint64_t val,
                     fifo8_pop(&s->xmit_fifo);
                 }
                 fifo8_push(&s->xmit_fifo, s->thr);
-                s->thr_ipending = 0;
                 s->lsr &= ~UART_LSR_TEMT;
-                s->lsr &= ~UART_LSR_THRE;
-                serial_update_irq(s);
-            } else {
-                s->thr_ipending = 0;
-                s->lsr &= ~UART_LSR_THRE;
-                serial_update_irq(s);
             }
+            s->thr_ipending = 0;
+            s->lsr &= ~UART_LSR_THRE;
+            serial_update_irq(s);
             serial_xmit(NULL, G_IO_OUT, s);
         }
         break;
-- 
1.8.3.1