amba-pl011: fix build error if CONFIG_DMA_ENGINE is not enabled
Following patch will fix build error if CONFIG_DMA_ENGINE is unset.
Reported-by: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Chanho Min <chanho.min@lge.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c
index b031abf..6cf861e 100644
--- a/drivers/tty/serial/amba-pl011.c
+++ b/drivers/tty/serial/amba-pl011.c
@@ -1195,6 +1195,7 @@
uap->im |= UART011_RXIM;
} else {
uap->im &= ~UART011_RXIM;
+#ifdef CONFIG_DMA_ENGINE
/* Start Rx DMA poll */
if (uap->dmarx.poll_rate) {
uap->dmarx.last_jiffies = jiffies;
@@ -1203,6 +1204,7 @@
jiffies +
msecs_to_jiffies(uap->dmarx.poll_rate));
}
+#endif
}
writew(uap->im, uap->port.membase + UART011_IMSC);
@@ -1665,11 +1667,13 @@
*/
baud = uart_get_baud_rate(port, termios, old, 0,
port->uartclk / clkdiv);
+#ifdef CONFIG_DMA_ENGINE
/*
* Adjust RX DMA polling rate with baud rate if not specified.
*/
if (uap->dmarx.auto_poll_rate)
uap->dmarx.poll_rate = DIV_ROUND_UP(10000000, baud);
+#endif
if (baud > port->uartclk/16)
quot = DIV_ROUND_CLOSEST(port->uartclk * 8, baud);