From: Philippe Mathieu-Daudé <f4bug@amsat.org>

Convert the old debug PRINTF() call to display the UART
baudrate to a trace event.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20200907015535.827885-3-f4bug@amsat.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/char/serial.c     | 4 +---
 hw/char/trace-events | 1 +
 2 files changed, 2 insertions(+), 3 deletions(-)

diff --git a/hw/char/serial.c b/hw/char/serial.c
index 840da89de7..e8029f840a 100644
--- a/hw/char/serial.c
+++ b/hw/char/serial.c
@@ -187,9 +187,7 @@ static void serial_update_parameters(SerialState *s)
     ssp.stop_bits = stop_bits;
     s->char_transmit_time =  (NANOSECONDS_PER_SECOND / speed) * frame_size;
     qemu_chr_fe_ioctl(&s->chr, CHR_IOCTL_SERIAL_SET_PARAMS, &ssp);
-
-    DPRINTF("speed=%.2f parity=%c data=%d stop=%d\n",
-           speed, parity, data_bits, stop_bits);
+    trace_serial_update_parameters(speed, parity, data_bits, stop_bits);
 }
 
 static void serial_update_msl(SerialState *s)
diff --git a/hw/char/trace-events b/hw/char/trace-events
index 2442a9f7d5..17304bef26 100644
--- a/hw/char/trace-events
+++ b/hw/char/trace-events
@@ -7,6 +7,7 @@ parallel_ioport_write(const char *desc, uint16_t addr, uint8_t value) "write [%s
 # serial.c
 serial_ioport_read(uint16_t addr, uint8_t value) "read addr 0x%02x val 0x%02x"
 serial_ioport_write(uint16_t addr, uint8_t value) "write addr 0x%02x val 0x%02x"
+serial_update_parameters(uint64_t baudrate, char parity, int data_bits, int stop_bits) "baudrate=%"PRIu64" parity='%c' data=%d stop=%d"
 
 # virtio-serial-bus.c
 virtio_serial_send_control_event(unsigned int port, uint16_t event, uint16_t value) "port %u, event %u, value %u"
-- 
2.26.2