diff mbox series

tty: serial: uartlite: Use constants in early_uartlite_putc

Message ID 20210826194323.3209227-1-sean.anderson@seco.com
State New
Headers show
Series tty: serial: uartlite: Use constants in early_uartlite_putc | expand

Commit Message

Sean Anderson Aug. 26, 2021, 7:43 p.m. UTC 
Use the constants defined at the beginning of this file instead of
integer literals when accessing registers. This makes this code easier
to read, and obviates the need for some explanatory comments.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
---

 drivers/tty/serial/uartlite.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)
diff mbox series

Patch

diff --git a/drivers/tty/serial/uartlite.c b/drivers/tty/serial/uartlite.c
index f42ccc40ffa6..bcea7ef4699f 100644
--- a/drivers/tty/serial/uartlite.c
+++ b/drivers/tty/serial/uartlite.c
@@ -553,16 +553,15 @@  static void early_uartlite_putc(struct uart_port *port, int c)
 	 * This limit is pretty arbitrary, unless we are at about 10 baud
 	 * we'll never timeout on a working UART.
 	 */
-
 	unsigned retries = 1000000;
-	/* read status bit - 0x8 offset */
-	while (--retries && (readl(port->membase + 8) & (1 << 3)))
+
+	while (--retries &&
+	       (readl(port->membase + ULITE_STATUS) & ULITE_STATUS_TXFULL))
 		;
 
 	/* Only attempt the iowrite if we didn't timeout */
-	/* write to TX_FIFO - 0x4 offset */
 	if (retries)
-		writel(c & 0xff, port->membase + 4);
+		writel(c & 0xff, port->membase + ULITE_TX);
 }
 
 static void early_uartlite_write(struct console *console,