[PATCH] serial: sirf: Simplify a test

[Christophe JAILLET]

'dmaengine_prep_dma_cyclic()' does not return an error pointer, so the test
can be simplified to be more consistent.

Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
 drivers/tty/serial/sirfsoc_uart.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/tty/serial/sirfsoc_uart.c b/drivers/tty/serial/sirfsoc_uart.c
index b186c9c4f850..666ca3156961 100644
--- a/drivers/tty/serial/sirfsoc_uart.c
+++ b/drivers/tty/serial/sirfsoc_uart.c
@@ -609,7 +609,7 @@ static void sirfsoc_uart_start_next_rx_dma(struct uart_port *port)
 		sirfport->rx_dma_items.dma_addr, SIRFSOC_RX_DMA_BUF_SIZE,
 		SIRFSOC_RX_DMA_BUF_SIZE / 2,
 		DMA_DEV_TO_MEM, DMA_PREP_INTERRUPT);
-	if (IS_ERR_OR_NULL(sirfport->rx_dma_items.desc)) {
+	if (!sirfport->rx_dma_items.desc) {
 		dev_err(port->dev, "DMA slave single fail\n");
 		return;
 	}
-- 
2.9.3