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tty: serial: lpc32xx_hs: use serial_lpc32xx_stop_tx() helper

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Instead of open-coding what serial_lpc32xx_stop_tx() already does, call
it in __serial_lpc32xx_tx() directly.

Cc: Vladimir Zapolskiy <vz@mleia.com>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Link: https://lore.kernel.org/r/20220224111028.20917-6-jslaby@suse.cz
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jiri Slaby 2022-02-24 12:10:28 +01:00 committed by Greg Kroah-Hartman
parent d185a852e1
commit f52361790a
1 changed files with 4 additions and 6 deletions
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10
drivers/tty/serial/lpc32xx_hs.c
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@ -276,10 +276,11 @@ static void __serial_lpc32xx_rx(struct uart_port *port)
tty_flip_buffer_push(tport);
}
static void serial_lpc32xx_stop_tx(struct uart_port *port);
static void __serial_lpc32xx_tx(struct uart_port *port)
{
struct circ_buf *xmit = &port->state->xmit;
unsigned int tmp;
if (port->x_char) {
writel((u32)port->x_char, LPC32XX_HSUART_FIFO(port->membase));
@ -306,11 +307,8 @@ static void __serial_lpc32xx_tx(struct uart_port *port)
uart_write_wakeup(port);
exit_tx:
if (uart_circ_empty(xmit)) {
tmp = readl(LPC32XX_HSUART_CTRL(port->membase));
tmp &= ~LPC32XX_HSU_TX_INT_EN;
writel(tmp, LPC32XX_HSUART_CTRL(port->membase));
}
if (uart_circ_empty(xmit))
serial_lpc32xx_stop_tx(port);
}
static irqreturn_t serial_lpc32xx_interrupt(int irq, void *dev_id)