The return value of lpuart_dma_tx_request() is a negative errno on
failure and zero on success.
Fixes: 159381df1442f ("tty: serial: fsl_lpuart: fix DMA operation when using IOMMU")
Reported-by: Leonard Crestez <leonard.crestez@xxxxxxx>
Signed-off-by: Michael Walle <michael@xxxxxxxx>
---
drivers/tty/serial/fsl_lpuart.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/tty/serial/fsl_lpuart.c b/drivers/tty/serial/fsl_lpuart.c
index 960fc2658f19..bbba298b68a4 100644
--- a/drivers/tty/serial/fsl_lpuart.c
+++ b/drivers/tty/serial/fsl_lpuart.c
@@ -1522,7 +1522,7 @@ static void lpuart_tx_dma_startup(struct lpuart_port *sport)
}
ret = lpuart_dma_tx_request(&sport->port);
- if (!ret)
+ if (ret)
goto err;
init_waitqueue_head(&sport->dma_wait);
--
2.20.1
