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serial: mxs: remove the MXS_AUART_DMA_CONFIG

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The MXS_AUART_DMA_CONFIG is originally used to check if the DT node
is configured with the DMA property.

But now, the MXS_AUART_DMA_CONFIG is set unconditionally in the
serial_mxs_probe_dt(), so the check in the mxs_auart_settermios() is
not necessary anymore. This patch removes this macro.

Signed-off-by: Huang Shijie <shijie8@gmail.com>
Acked-by: Shawn Guo <shawn.guo@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Huang Shijie 2013-08-03 10:09:15 -04:00 committed by Greg Kroah-Hartman
parent 8418e67d95
commit afab220396
1 changed files with 1 additions and 4 deletions
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5
drivers/tty/serial/mxs-auart.c
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@ -133,7 +133,6 @@ enum mxs_auart_type {
struct mxs_auart_port {
struct uart_port port;
#define MXS_AUART_DMA_CONFIG 0x1
#define MXS_AUART_DMA_ENABLED 0x2
#define MXS_AUART_DMA_TX_SYNC 2 /* bit 2 */
#define MXS_AUART_DMA_RX_READY 3 /* bit 3 */
@ -640,7 +639,7 @@ static void mxs_auart_settermios(struct uart_port *u,
* we can only implement the DMA support for auart
* in mx28.
*/
if (is_imx28_auart(s) && (s->flags & MXS_AUART_DMA_CONFIG)
if (is_imx28_auart(s)
&& test_bit(MXS_AUART_RTSCTS, &s->flags)) {
if (!mxs_auart_dma_init(s))
/* enable DMA tranfer */
@ -1009,8 +1008,6 @@ static int serial_mxs_probe_dt(struct mxs_auart_port *s,
}
s->port.line = ret;
s->flags |= MXS_AUART_DMA_CONFIG;
if (of_get_property(np, "fsl,uart-has-rtscts", NULL))
set_bit(MXS_AUART_RTSCTS, &s->flags);