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authorPeter Crosthwaite <peter.crosthwaite@xilinx.com>2013-07-15 12:28:07 +0100
committerPeter Maydell <peter.maydell@linaro.org>2013-07-15 12:28:07 +0100
commit9121d02cb33c96b444a3973579f5edc119597e81 (patch)
treed26a16a8ae415a20b2bf48016474441953ae0b00
parentc3cb8e77804313e1be99b5f28a34a346736707a5 (diff)
downloadqemu-arm-9121d02cb33c96b444a3973579f5edc119597e81.tar.gz
char/cadence_uart: Fix reset for unattached instances
commit 1db8b5efe0c2b5000e50691eea61264a615f43de introduced an issue where QEMU would segfault if you have an unattached Cadence UART. Fix by guarding the flush-on-reset logic on there being a qemu_chr attachment. Reported-by: Soren Brinkmann <soren.brinkmann@xilinx.com> Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Tested-by: Soren Brinkmann <soren.brinkmann@xilinx.com> Message-id: 9009578ee10a50d994b2e10aa2840d73765f5968.1370577272.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
-rw-r--r--hw/char/cadence_uart.c4
1 files changed, 3 insertions, 1 deletions
diff --git a/hw/char/cadence_uart.c b/hw/char/cadence_uart.c
index 131370a74b..4d457f8c65 100644
--- a/hw/char/cadence_uart.c
+++ b/hw/char/cadence_uart.c
@@ -157,7 +157,9 @@ static void uart_rx_reset(UartState *s)
{
s->rx_wpos = 0;
s->rx_count = 0;
- qemu_chr_accept_input(s->chr);
+ if (s->chr) {
+ qemu_chr_accept_input(s->chr);
+ }
s->r[R_SR] |= UART_SR_INTR_REMPTY;
s->r[R_SR] &= ~UART_SR_INTR_RFUL;