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serial: bfin_sport_uart: protect changes to uart_port
Common serial API says we need to grab the port lock before modifying the port state to prevent inconsistent state between threads. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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1 changed files with 2 additions and 2 deletions
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@ -498,6 +498,8 @@ static void sport_set_termios(struct uart_port *port,
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/* up->parib = 1; */
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}
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spin_lock_irqsave(&up->port.lock, flags);
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port->read_status_mask = OE;
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if (termios->c_iflag & INPCK)
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port->read_status_mask |= (FE | PE);
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@ -538,8 +540,6 @@ static void sport_set_termios(struct uart_port *port,
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/* uart baud rate */
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port->uartclk = uart_get_baud_rate(port, termios, old, 0, get_sclk()/16);
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spin_lock_irqsave(&up->port.lock, flags);
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/* Disable UART */
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SPORT_PUT_TCR1(up, SPORT_GET_TCR1(up) & ~TSPEN);
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SPORT_PUT_RCR1(up, SPORT_GET_RCR1(up) & ~RSPEN);
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