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serial: Add missing bit

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Serial frames always start with a start bit.
This bit was missing in frame size calculation.

Signed-off-by: Stefan Weil <weil@mail.berlios.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
This commit is contained in:
Stefan Weil 2009-10-26 21:51:41 +01:00 committed by Anthony Liguori
parent 45eea13b24
commit 718b8aec62
1 changed files with 5 additions and 3 deletions
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8
hw/serial.c
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@ -232,15 +232,17 @@ static void serial_update_parameters(SerialState *s)
if (s->divider == 0)
return;
/* Start bit. */
frame_size = 1;
if (s->lcr & 0x08) {
/* Parity bit. */
frame_size++;
if (s->lcr & 0x10)
parity = 'E';
else
parity = 'O';
} else {
parity = 'N';
frame_size = 0;
}
if (s->lcr & 0x04)
stop_bits = 2;
@ -692,12 +694,12 @@ static void serial_reset(void *opaque)
s->lcr = 0;
s->lsr = UART_LSR_TEMT | UART_LSR_THRE;
s->msr = UART_MSR_DCD | UART_MSR_DSR | UART_MSR_CTS;
/* Default to 9600 baud, no parity, one stop bit */
/* Default to 9600 baud, 1 start bit, 8 data bits, 1 stop bit, no parity. */
s->divider = 0x0C;
s->mcr = UART_MCR_OUT2;
s->scr = 0;
s->tsr_retry = 0;
s->char_transmit_time = (get_ticks_per_sec() / 9600) * 9;
s->char_transmit_time = (get_ticks_per_sec() / 9600) * 10;
s->poll_msl = 0;
fifo_clear(s,RECV_FIFO);