[PATCH 07/20] serial: stm32: less messages on dma alloc error
From: Bich HEMON <hidden>
Date: 2017-06-26 12:50:57
Also in:
linux-devicetree, linux-serial, lkml
Subsystem:
the rest, tty layer and serial drivers · Maintainers:
Linus Torvalds, Greg Kroah-Hartman, Jiri Slaby
From: Bich Hemon <redacted> Just display one info (instead of two) in the log buffer when there is no dma. Signed-off-by: Gerald Baeza <redacted> --- drivers/tty/serial/stm32-usart.c | 8 ++------ 1 file changed, 2 insertions(+), 6 deletions(-)
diff --git a/drivers/tty/serial/stm32-usart.c b/drivers/tty/serial/stm32-usart.c
index 79ac167..dcc6d1e 100644
--- a/drivers/tty/serial/stm32-usart.c
+++ b/drivers/tty/serial/stm32-usart.c@@ -786,10 +786,8 @@ static int stm32_of_dma_rx_probe(struct stm32_port *stm32port, /* Request DMA RX channel */ stm32port->rx_ch = dma_request_slave_channel(dev, "rx"); - if (!stm32port->rx_ch) { - dev_info(dev, "rx dma alloc failed\n"); + if (!stm32port->rx_ch) return -ENODEV; - } stm32port->rx_buf = dma_alloc_coherent(&pdev->dev, RX_BUF_L, &stm32port->rx_dma_buf, GFP_KERNEL);
@@ -858,10 +856,8 @@ static int stm32_of_dma_tx_probe(struct stm32_port *stm32port, /* Request DMA TX channel */ stm32port->tx_ch = dma_request_slave_channel(dev, "tx"); - if (!stm32port->tx_ch) { - dev_info(dev, "tx dma alloc failed\n"); + if (!stm32port->tx_ch) return -ENODEV; - } stm32port->tx_buf = dma_alloc_coherent(&pdev->dev, TX_BUF_L, &stm32port->tx_dma_buf, GFP_KERNEL);
--
1.9.1