qemu-trivial
[Top][All Lists]
Advanced

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

[Qemu-trivial] [PATCH] cadence_uart: Check if receiver timeout counter i


From: Andrew Gacek
Subject: [Qemu-trivial] [PATCH] cadence_uart: Check if receiver timeout counter is disabled
Date: Wed, 7 Dec 2016 15:12:42 -0600

When register Rcvr_timeout_reg0 (R_RTOR in cadence_uart.c) is set to
0, the receiver timeout counter should be disabled. See page 1801 of
"Zynq-7000 AP SoC Technical Reference Manual". This commit adds a
such a check before setting the receive timeout interrupt.

Signed-off-by: Andrew Gacek <address@hidden>
---
 hw/char/cadence_uart.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/hw/char/cadence_uart.c b/hw/char/cadence_uart.c
index 0215d65..54194b1 100644
--- a/hw/char/cadence_uart.c
+++ b/hw/char/cadence_uart.c
@@ -138,7 +138,9 @@ static void fifo_trigger_update(void *opaque)
 {
     CadenceUARTState *s = opaque;

-    s->r[R_CISR] |= UART_INTR_TIMEOUT;
+    if (s->r[R_RTOR]) {
+        s->r[R_CISR] |= UART_INTR_TIMEOUT;
+    }

     uart_update_status(s);
 }
-- 
2.7.4



reply via email to

[Prev in Thread] Current Thread [Next in Thread]