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char/serial: fix copy&paste error (fifo8_is_full vs empty) 

Copy&paste error in serial.c causes a crash when attempting
to read from UART (if there is no data to be read)

Signed-off-by: Vladimir Senkov <hangup@gmail.com>
Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This commit is contained in:
Vladimir Senkov 2013-06-16 20:30:52 -04:00 committed by Michael Tokarev
parent 616404cd42
commit b165b0d8e6
1 changed files with 1 additions and 1 deletions
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2
hw/char/serial.c
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@ -424,7 +424,7 @@ static uint64_t serial_ioport_read(void *opaque, hwaddr addr, unsigned size)
ret = s->divider & 0xff;
} else {
if(s->fcr & UART_FCR_FE) {
ret = fifo8_is_full(&s->recv_fifo) ?
ret = fifo8_is_empty(&s->recv_fifo) ?
0 : fifo8_pop(&s->recv_fifo);
if (s->recv_fifo.num == 0) {
s->lsr &= ~(UART_LSR_DR | UART_LSR_BI);