Messages in this thread Patch in this message | | | From | Michael Walle <> | Subject | [PATCH v2 2/2] tty: serial: fsl_lpuart: fix return value checking | Date | Wed, 25 Mar 2020 10:06:58 +0100 |
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The return value of lpuart_dma_tx_request() is an 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@nxp.com> Signed-off-by: Michael Walle <michael@walle.cc> --- changes since v1: - none
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 131018979b77..5d41075964f2 100644 --- a/drivers/tty/serial/fsl_lpuart.c +++ b/drivers/tty/serial/fsl_lpuart.c @@ -1538,7 +1538,7 @@ static void lpuart_tx_dma_startup(struct lpuart_port *sport) goto err; ret = lpuart_dma_tx_request(&sport->port); - if (!ret) + if (ret) goto err; init_waitqueue_head(&sport->dma_wait); -- 2.20.1
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