The original code looks as follows:
if (sport->dma_is_enabled) {
... make sure TX DMA is running, i.e. .dma_is_txing = 1
}
if (sport->dma_is_txing)
return;
As .dma_is_txing can only be true if .dma_is_enabled is, the return can
go at the end of the first if body without an additional check.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@xxxxxxxxxxxxxx>
---
drivers/tty/serial/imx.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/tty/serial/imx.c b/drivers/tty/serial/imx.c
index 8890e0641706..e41c10d53a44 100644
--- a/drivers/tty/serial/imx.c
+++ b/drivers/tty/serial/imx.c
@@ -504,10 +504,9 @@ static inline void imx_transmit_buffer(struct imx_port *sport)
imx_uart_writel(sport, temp, UCR1);
imx_dma_tx(sport);
}
- }
- if (sport->dma_is_txing)
return;
+ }
while (!uart_circ_empty(xmit) &&
!(imx_uart_readl(sport, uts_reg(sport)) & UTS_TXFULL)) {
--
2.16.1
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